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description Publicationkeyboard_double_arrow_right Article 2010Publisher:SciELO Agencia Nacional de Investigacion y Desarrollo (ANID) Authors: Montoya,Andrés; Arias,Mauricio; Olivera-Angel,Martha;Montoya,Andrés; Arias,Mauricio; Olivera-Angel,Martha;Se estudian, bajo condiciones de laboratorio, los estadios tempranos de desarrollo en Bryconamericus caucanus. Hembras maduras (peso promedio de 8,12g) recibieron dos dosis intraperitoneales de extracto de hipofisis de carpa (1a dosis de 0,5 mg/Kg en la hora cero y 2 dosis de 5 mg/Kg en la hora 12). Asimismo, los machos maduros recibieron una unica dosis de 0.5 mg / kg en la 2 dosis de las hembras. Se llevo a cabo desove en seco a 152,25 grados-hora luego de la aplicacion de la 2 dosis hormonal. Los huevos de B. caucanus eran amarillos, redondeados, no adhesivos y el espacio perivitelino luego de la hidratacion fue moderado. La eclosion se registro 28 h 20 min despues de la fertilizacion (594,3 grado-horas a 21C). La respuesta positiva a la hipofizacion y las caracteristicas morfologicas del huevo y del embrion de B. caucanus fueron similares a los reportes previos en otros miembros de la subfamilia Tetragonopterinae, siendo el desarrollo embrionario de B. caucanus particularmente prolongado.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 ColombiaPublisher:Universidad de Cordoba Authors: Aroldo Botello-León; Yordan Martínez-Aguilar; María Teresa Viana; Marcos Ortega-Ojeda; +4 AuthorsAroldo Botello-León; Yordan Martínez-Aguilar; María Teresa Viana; Marcos Ortega-Ojeda; Charles Morán-Montaño; Kirenia Pérez-Corría; Yuniel Méndez-Martínez; Borja Velázquez-Martí;doi: 10.21897/rmvz.2527
Objetivo. Determinar la respuesta de los indicadores productivos al incluir palmiste (Elaeis guineensis) en dietas para la nutrición de alevines de tilapia (Oreochromis niloticus). Material y métodos. Se utilizaron 300 machos masculinizados de tilapia (4,89 ± 0,09 g) y se distribuyeron bajo un diseño completamente al azar con tres repeticiones por tratamiento (20 peces por repetición). Se utilizó palmiste para formular cinco dietas isoproteicas (30,64%), isolipídicas (7,38%) e isoenergéticas (11,84 MJ kg-1 de alimento), control (T0), 5% (T5); 10% (T10); 15% (T15) y 20% (T20) para alimentar durante 60 días. Resultados. Los peces alimentados con los tratamientos T0, T5 y T10, no mostraron diferencias significativas (p> 0.05), pero sí con T15 y T20 en la digestibilidad de los nutrientes, el crecimiento y la composición del cuerpo. La inclusión de palmiste hasta el 20% de la dieta, disminuyó el costo del alimento. Se observó un alto grado de dependencia entre el contenido de fibra detergente neutro (%), la digestibilidad aparente de la materia seca (%) y la digestibilidad aparente de la proteína (%) (R2 = 0,732 y R2 = 0,774; p <0,000), respectivamente. Conclusiones. El palmiste se puede usar hasta el 10% en dietas para alevines de tilapia, sin afectar la digestibilidad aparente de los nutrientes, el crecimiento y el contenido nutricional en todo el cuerpo. La inclusión progresiva de palmiste en las dietas, disminuyó el costo del alimento, para un cultivo de tilapia más rentable.
Repositorio de la Un... arrow_drop_down Repositorio de la Universidad de CórdobaArticle . 2022Data sources: Repositorio de la Universidad de CórdobaLAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas; Revista MVZ CórdobaArticle . 2022 . Peer-reviewedLicense: CC BY NC SAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Repositorio de la Un... arrow_drop_down Repositorio de la Universidad de CórdobaArticle . 2022Data sources: Repositorio de la Universidad de CórdobaLAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas; Revista MVZ CórdobaArticle . 2022 . Peer-reviewedLicense: CC BY NC SAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2016 United KingdomPublisher:The Royal Society Ansari-Pour, N; Moñino, Y; Duque, C; Gallego, N; Bedoya, G; Thomas, MG; Bradman, N;The Palenque, a black community in rural Colombia, have an oral history of fugitive African slaves founding a free village near Cartagena in the seventeenth century. Recently, linguists have identified some 200 words in regular use that originate in a Kikongo language, with Yombe, mainly spoken in the Congo region, being the most likely source. The non-recombining portion of the Y chromosome (NRY) and mitochondrial DNA were analysed to establish whether there was greater similarity between present-day members of the Palenque and Yombe than between the Palenque and 42 other African groups (for all individuals,n= 2799) from which forced slaves might have been taken. NRY data are consistent with the linguistic evidence that Yombe is the most likely group from which the original male settlers of Palenque came. Mitochondrial DNA data suggested substantial maternal sub-Saharan African ancestry and a strong founder effect but did not associate Palenque with any particular African group. In addition, based on cultural data including inhabitants' claims of linguistic differences, it has been hypothesized that the two districts of the village (Abajo and Arriba) have different origins, with Arriba founded by men originating in Congo and Abajo by those born in Colombia. Although significant genetic structuring distinguished the two from each other, no supporting evidence for this hypothesis was found.
Europe PubMed Centra... arrow_drop_down Proceedings of the Royal Society B Biological SciencesArticle . 2016 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 15 citations 15 popularity Average influence Average impulse Top 10% Powered by BIP!more_vert Europe PubMed Centra... arrow_drop_down Proceedings of the Royal Society B Biological SciencesArticle . 2016 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2018Publisher:Frontiers Media SA Andrés J. Cortés; Andrés J. Cortés; Paola Skeen; Paola Skeen; Matthew W. Blair; María I. Chacón-Sánchez;Exploring the genomic architecture of species and populations divergence aids understanding how lineages evolve and adapt, and ultimately can show the repeatability of evolutionary processes. Yet, the genomic signatures associated with divergence are still relatively unexplored, leading to a knowledge gap on whether species divergence ultimately differs in its genetic architecture from divergence at other spatial scales (i.e., populations, ecotypes). Our goal in this research was to determine whether genomic islands of speciation are more prone to harbor within-species differentiation due to genomic features, suppressed recombination, smaller effective population size or increased drift, across repeated hierarchically nested levels of divergence. We used two species of Phaseolus beans with strong genepool and population sub-structure produced by multiple independent domestications each especially in Andean and Mesoamerican / Middle American geographies. We genotyped 22,531 GBS-derived SNP markers in 209 individuals of wild and cultivated Phaseolus vulgaris and Phaseolus lunatus. We identified six regions for species-associated divergence. Out of these divergence peaks, 21% were recovered in the four within-species between-genepool comparisons and in the five within-genepool wild-cultivated comparisons (some of the latter did retrieve genuine signatures of the well described multiple domestication syndromes). However, genomic regions with overall high relative differentiation (measured by FST) coincided with regions of low SNP density and regions of elevated delta divergence between-genepools (ΔDiv), independent of the scale of divergence. The divergence in chromosome Pv10 further coincided with a between-species pericentric inversion. These convergences suggest that shared variants are being recurrently fixed at replicated regions of the genome, and in a similar manner across different hierarchically nested levels of divergence, likely as result of genomic features that make certain regions more prone to accumulate islands of speciation and within-species divergence. In summary, neighboring signatures of speciation, adaptation and domestication in Phaseolus beans are influenced by ubiquitous genomic constrains, which may continue to fortuitously shape genomic differentiation at various others scales of divergence.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 34 citations 34 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3389/fpls.2018.01816&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2013 Argentina, Argentina, Argentina, SpainPublisher:IOP Publishing Joan Artigas; Emili García-Berthou; Delia Elena Bauer; Maria I Castro; Joaquín Cochero; Darío César Colautti; Agustina Cortelezzi; John C Donato; Arturo Elosegi; Claudia Feijoó; Adonis Giorgi; Nora Gómez; Leonardo Leggieri; Isabel Muñoz; Alberto Rodrigues-Capítulo; Anna M. Romaní; Sergi Sabater;handle: 10256/7522 , 2072/320166 , 10810/11319 , 11336/18466
We assessed the effects of nutrient enrichment on three stream ecosystems running through distinct biomes (Mediterranean, Pampean and Andean). We increased the concentrations of N and P in the stream water 1.6–4-fold following a before–after control–impact paired series (BACIPS) design in each stream, and evaluated changes in the biomass of bacteria, primary producers, invertebrates and fish in the enriched (E) versus control (C) reaches after nutrient addition through a predictive-BACIPS approach. The treatment produced variable biomass responses (2–77% of explained variance) among biological communities and streams. The greatest biomass response was observed for algae in the Andean stream (77% of the variance), although fish also showed important biomass responses (about 9–48%). The strongest biomass response to enrichment (77% in all biological compartments) was found in the Andean stream. The magnitude and seasonality of biomass responses to enrichment were highly site specific, often depending on the basal nutrient concentration and on windows of ecological opportunity (periods when environmental constraints other than nutrients do not limit biomass growth). The Pampean stream, with high basal nutrient concentrations, showed a weak response to enrichment (except for invertebrates), whereas the greater responses of Andean stream communities were presumably favored by wider windows of ecological opportunity in comparison to those from the Mediterranean stream. Despite variation among sites, enrichment globally stimulated the algal-based food webs (algae and invertebrate grazers) but not the detritus-based food webs (bacteria and invertebrate shredders). This study shows that nutrient enrichment tends to globally enhance the biomass of stream biological assemblages, but that its magnitude and extent within the food web are complex and are strongly determined by environmental factors and ecosystem structure. This study was funded by the project GLOBRIO of the Banco Bilbao Vizcaya Argentaria (BBVA) Foundation. Additional funding was obtained from the projects SCARCE (Consolider Ingenio 2010, CSD2009-00065) and CARBONET (CGL2011-30474-C02-01) of the Spanish Ministry of Science and Innovation. 13 p. + 2 p. (Erratum)
Recolector de Cienci... arrow_drop_down CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas; Environmental Research Letters; SEDICI (UNLP) - Universidad Nacional de La PlataArticle . 2013 . Peer-reviewedLicense: CC BYRecolector de Ciencia Abierta, RECOLECTA; DUGiDocs – Universitat de GironaArticle . 2013License: CC BY NC SAServicio de Difusión de la Creación IntelectualArticle . 2013Data sources: Servicio de Difusión de la Creación Intelectualadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 31 citations 31 popularity Top 10% influence Average impulse Top 10% Powered by BIP!visibility 12visibility views 12 download downloads 14 Powered bymore_vert Recolector de Cienci... arrow_drop_down CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas; Environmental Research Letters; SEDICI (UNLP) - Universidad Nacional de La PlataArticle . 2013 . Peer-reviewedLicense: CC BYRecolector de Ciencia Abierta, RECOLECTA; DUGiDocs – Universitat de GironaArticle . 2013License: CC BY NC SAServicio de Difusión de la Creación IntelectualArticle . 2013Data sources: Servicio de Difusión de la Creación Intelectualadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Master thesis 2018 Colombia Spanish; CastilianAuthors: Acosta Villota, Gyna Gysela;Acosta Villota, Gyna Gysela;La tecnología GMT ®(Tilapia genéticamente macho) se convierte en una alternativa viable para producir lotes monosexo machos de tilapia sin el uso de hormonas, pero como primer paso es necesario producir e identificar neohembras XY. El principal problema es identificar neohembras de hembras normales, sin necesidad de emplear pruebas de progenie que implica la producción de múltiples generaciones. El objetivo de este estudio fue producir ejemplares de neohembras de tilapia roja e identificar el genotipo de neohembras por citogenética clásica y molecular. Se feminizaron 800 larvas de tilapia suministrando una dosis de hormona 17β-estradiol a razón de 200mg/Kg de alimento por 30 días y un tratamiento control de 200 larvas sin hormona feminizante. A los 350g de peso se realizó sexaje manual por inspección de la papila urogenital y marcación con microchip para su posterior identificación. Los cromosomas se obtuvieron mediante la técnica de cultivo de linfocitos de sangre periférica y se emplearon las técnicas de bandeo cromosómico C, Q, G y NOR. Se genotipificaron los individuos de los dos tratamientos con el microsatélite UNH898, y se empleó una sonda que contenía el genotipo 260/290, específica para machos normales en la técnica FISH. Los resultados de los análisis mostraron que la especie Oreochromis sp., posee 2n=44 cromosomas y se encontraron patrones únicos de banda C sin evidencia de cromosomas sexuales. Se encontró un genotipo recurrente en machos, pero mediante citogenética molecular se logró evidenciar que no es exclusivo para machos porque hibridó en dispersiones cromosómicas de hembras. //Abstract: GMT ® technology (genetically male tilapia) becomes a viable alternative to produce male monosex lots of tilapia without the use of hormones, but as a first step, it is necessary to produce and identify neofemales XY. The main problem is to identify neofemales of normal females, without the need to use progeny tests that involve the production of multiple generations. The objective of this study was to produce neofemales from red tilapia and identify the genotype of neofemales by classical and molecular cytogenetics. About 800 tilapia larvae were feminized by supplying a dose of 17β-estradiol hormone at a rate of 200 mg / kg of feed for 30 days and a control treatment of 200 larvae without a feminizing hormone. At 350g of weight, manual sexing was performed by inspection of the urogenital papilla and microchip marking for later identification. Chromosomes were obtained by the peripheral blood lymphocyte culture technique and then used chromosome banding techniques C, Q, G and NOR. Individuals of the two treatments were genotyped with the UNH898 microsatellite, and a probe containing the genotype 260/290, specific for normal males in the FISH technique, was used. The results of the analysis showed that the species Oreochromis sp., has 2n = 44 chromosomes and unique C-band patterns were found without evidence of sex chromosomes. A recurrent genotype was found in males, but through molecular cytogenetics it was found that it is not exclusive for males because it hybridized in female chromosomal dispersions. Maestría
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1326::9eb0e431225ffc3a5b4065f64b522139&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2017 DenmarkPublisher:The Royal Society Alexander R. Gaos; Rebecca L. Lewison; Michael P. Jensen; Michael J. Liles; Ana Henriquez; Sofia Chavarria; Carlos Mario Pacheco; Melissa Valle; David Melero; Velkiss Gadea; Eduardo Altamirano; Perla Torres; Felipe Vallejo; Cristina Miranda; Carolina LeMarie; Jesus Lucero; Karen Oceguera; Didiher Chácon; Luis G. Fonseca; Marino Abrego; Jeffrey A. Seminoff; Eric E. Flores; Israel Llamas; Rodrigo Donadi; Bernardo Peña; Muñoz J; Daniela Alarcòn Ruales; Jaime A. Chaves; Sarah Otterstrom; Alan Zavala; Catherine E. Hart; Rachel Brittain; Joanna Alfaro-Shigueto; Jeffrey C. Mangel; Ingrid L. Yañez; Peter H. Dutton;The complex processes involved with animal migration have long been a subject of biological interest, and broad-scale movement patterns of many marine turtle populations still remain unresolved. While it is widely accepted that once marine turtles reach sexual maturity they home to natal areas for nesting or reproduction, the role of philopatry to natal areas during other life stages has received less scrutiny, despite widespread evidence across the taxa. Here we report on genetic research that indicates that juvenile hawksbill turtles ( Eretmochelys imbricata ) in the eastern Pacific Ocean use foraging grounds in the region of their natal beaches, a pattern we term natal foraging philopatry. Our findings confirm that traditional views of natal homing solely for reproduction are incomplete and that many marine turtle species exhibit philopatry to natal areas to forage. Our results have important implications for life-history research and conservation of marine turtles and may extend to other wide-ranging marine vertebrates that demonstrate natal philopatry.
Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2017Full-Text: http://europepmc.org/articles/PMC5579084Data sources: PubMed CentralRoyal Society Open Science; VBN; Aalborg University Research PortalArticle . 2017 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityRecolector de Ciencia Abierta, RECOLECTAArticle . 2017Data sources: Recolector de Ciencia Abierta, RECOLECTAVBN; Aalborg University Research PortalArticle . 2017add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 16 citations 16 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2017Full-Text: http://europepmc.org/articles/PMC5579084Data sources: PubMed CentralRoyal Society Open Science; VBN; Aalborg University Research PortalArticle . 2017 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityRecolector de Ciencia Abierta, RECOLECTAArticle . 2017Data sources: Recolector de Ciencia Abierta, RECOLECTAVBN; Aalborg University Research PortalArticle . 2017add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2019Publisher:American Geophysical Union (AGU) Authors: Elsa Arellano-Torres; Catalina Álvarez-Covelli; Juan José Kasper-Zubillaga; María del Socorro Lozano-García;Elsa Arellano-Torres; Catalina Álvarez-Covelli; Juan José Kasper-Zubillaga; María del Socorro Lozano-García;doi: 10.1029/2018pa003479
handle: 20.500.12495/1752
AbstractWe study shifts in phytoplankton proxies linked to terrigenous inputs and teleconnections in a core from Soledad Basin, Gulf of Ulloa, NW Mexico, spanning the end of the deglaciation and the Holocene. We used biogenic opal (% opal), organic carbon (% total organic carbon [TOC]), and inorganic carbon (% CaCO3) as proxies of productivity and opal/TOC and CaCO3/TOC ratios as proxies of nutrient uptake and C‐export by siliceous and carbonate organisms. We reconstructed terrestrial inputs and identified authigenic gypsum. Based on opal/TOC and CaCO3/TOC ratios, we found periodic changes of ~0.5, 1.1–1.8 ka cycle in phytoplankton proxies exporting siliceous and carbonate skeletal debris to the sediments. An increase in carbonate organisms occurred during 14–8.7 ka, corresponding to reduced El Niño–Southern Oscillation (ENSO)‐like variability, in parallel to the northward displacement of the Intertropical Convergence Zone (ITCZ) and an overall negative phase of the Pacific Decadal Oscillation (PDO). An increase in siliceous organisms occurred between 6 and 3 ka, coincident with strong ENSO‐like conditions, southern migration of ITCZ, and less intense but more frequent positive PDO‐hydrological variability. Grain size analyses show significant amounts of fine fraction (dust <6.6 μm) present during the early‐ to mid‐Holocene in agreement to extreme weather on land, with episodes of eolian and fluvial transport to the sea. The ENSO‐like variations influenced biological C‐export producers on a scale of 1.1–1.8 ka, but PDO‐related variability is uncertain. We suggest that Holocene drivers for phytoplankton successions are changes in insolation, ITCZ migration, California Current upwelling, nutrient inputs by advection, and terrestrial sources.
Paleoceanography and... arrow_drop_down Paleoceanography and PaleoclimatologyArticle . 2019 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert Paleoceanography and... arrow_drop_down Paleoceanography and PaleoclimatologyArticle . 2019 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2018Publisher:Cold Spring Harbor Laboratory Funded by:NSF | DISSERTATION RESEARCH: Th...NSF| DISSERTATION RESEARCH: The evolutionary origin and genetics of color pattern diversity in Phyllobates poison frogsAuthors: Roberto Márquez; Valeria Ramírez-Castañeda; Adolfo Amézquita;Roberto Márquez; Valeria Ramírez-Castañeda; Adolfo Amézquita;doi: 10.1101/460865 , 10.1111/evo.13672
pmid: 30593663
AbstractToxicity is widespread among living organisms, and evolves as a multimodal phenotype. Part of this phenotype is the ability to avoid self-intoxication (autoresistance). Evolving toxin resistance can involve fitness tradeoffs, so autoresistance is often expected to evolve gradually and in tandem with toxicity, resulting in a correlation between the degrees of toxicity and autoresistance among toxic populations. We investigate this correlation inPhyllobatespoison frogs, notorious for secreting batrachotoxin (BTX), a potent neurotoxin that targets sodium channels, using ancestral sequence reconstructions of BTX–sensing areas of the muscular voltage-gated sodium channel. Reconstructions suggest that BTX resistance arose at the root ofPhyllobates, coinciding with the evolution of BTX secretion. After this event little or no further evolution of autoresistance seems to have occurred, despite large increases in toxicity throughout the history of these frogs. Our results therefore provide no evidence in favor of an evolutionary correlation between toxicity and autoresistance, which conflicts with previous work. Future research on the functional costs and benefits of mutations putatively involved in BTX resistance, as well as their prevalence in natural populations should shed light on the evolutionary mechanisms driving the relationship between toxicity and autoresistance inPhyllobatesfrogs.
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For further information contact us at helpdesk@openaire.euAccess Routeshybrid 11 citations 11 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2020 Colombia, SpainPublisher:Elsevier BV Isaac Kuzmar; José Rafael Consuegra; Jezael Jiménez; Einer López; José V. Hernández; Ana Noreña-Peña;This paper presents data collected through a questionnaire for the estimation of body dysmorphic disorder known as vigorexy, weight level and levels of exercise dependence in individuals from Barranquilla, Colombia who attend local gyms, based on their physical activity, food supplements eat- ing habits, psychological pressure, and risk of muscle dys- morphia. The Data contains 8 tributes and 200 records; la- belling obesity range according to WHO into normal, over- weight or obesity. All data was collected in person and di- rectly from users. This data can be used to generate scien- tific research and intelligent computational tools to identify the obesity level and muscle dysmorphia risk of an individ- ual and to build recommender systems that monitor health and mental status.
Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2020Full-Text: http://europepmc.org/articles/PMC7341342Data sources: PubMed CentralRecolector de Ciencia Abierta, RECOLECTAArticle . 2020Full-Text: https://doi.org/10.1016/j.dib.2020.105967Data sources: Recolector de Ciencia Abierta, RECOLECTARepositorio Institucional de la Universidad de AlicanteArticle . 2020Data sources: Repositorio Institucional de la Universidad de AlicanteRepositorio Universidad Simón Bolívar; LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas LatinoamericanasArticle . 2020License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 3 citations 3 popularity Average influence Average impulse Average Powered by BIP!more_vert Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2020Full-Text: http://europepmc.org/articles/PMC7341342Data sources: PubMed CentralRecolector de Ciencia Abierta, RECOLECTAArticle . 2020Full-Text: https://doi.org/10.1016/j.dib.2020.105967Data sources: Recolector de Ciencia Abierta, RECOLECTARepositorio Institucional de la Universidad de AlicanteArticle . 2020Data sources: Repositorio Institucional de la Universidad de AlicanteRepositorio Universidad Simón Bolívar; LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas LatinoamericanasArticle . 2020License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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description Publicationkeyboard_double_arrow_right Article 2010Publisher:SciELO Agencia Nacional de Investigacion y Desarrollo (ANID) Authors: Montoya,Andrés; Arias,Mauricio; Olivera-Angel,Martha;Montoya,Andrés; Arias,Mauricio; Olivera-Angel,Martha;Se estudian, bajo condiciones de laboratorio, los estadios tempranos de desarrollo en Bryconamericus caucanus. Hembras maduras (peso promedio de 8,12g) recibieron dos dosis intraperitoneales de extracto de hipofisis de carpa (1a dosis de 0,5 mg/Kg en la hora cero y 2 dosis de 5 mg/Kg en la hora 12). Asimismo, los machos maduros recibieron una unica dosis de 0.5 mg / kg en la 2 dosis de las hembras. Se llevo a cabo desove en seco a 152,25 grados-hora luego de la aplicacion de la 2 dosis hormonal. Los huevos de B. caucanus eran amarillos, redondeados, no adhesivos y el espacio perivitelino luego de la hidratacion fue moderado. La eclosion se registro 28 h 20 min despues de la fertilizacion (594,3 grado-horas a 21C). La respuesta positiva a la hipofizacion y las caracteristicas morfologicas del huevo y del embrion de B. caucanus fueron similares a los reportes previos en otros miembros de la subfamilia Tetragonopterinae, siendo el desarrollo embrionario de B. caucanus particularmente prolongado.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 ColombiaPublisher:Universidad de Cordoba Authors: Aroldo Botello-León; Yordan Martínez-Aguilar; María Teresa Viana; Marcos Ortega-Ojeda; +4 AuthorsAroldo Botello-León; Yordan Martínez-Aguilar; María Teresa Viana; Marcos Ortega-Ojeda; Charles Morán-Montaño; Kirenia Pérez-Corría; Yuniel Méndez-Martínez; Borja Velázquez-Martí;doi: 10.21897/rmvz.2527
Objetivo. Determinar la respuesta de los indicadores productivos al incluir palmiste (Elaeis guineensis) en dietas para la nutrición de alevines de tilapia (Oreochromis niloticus). Material y métodos. Se utilizaron 300 machos masculinizados de tilapia (4,89 ± 0,09 g) y se distribuyeron bajo un diseño completamente al azar con tres repeticiones por tratamiento (20 peces por repetición). Se utilizó palmiste para formular cinco dietas isoproteicas (30,64%), isolipídicas (7,38%) e isoenergéticas (11,84 MJ kg-1 de alimento), control (T0), 5% (T5); 10% (T10); 15% (T15) y 20% (T20) para alimentar durante 60 días. Resultados. Los peces alimentados con los tratamientos T0, T5 y T10, no mostraron diferencias significativas (p> 0.05), pero sí con T15 y T20 en la digestibilidad de los nutrientes, el crecimiento y la composición del cuerpo. La inclusión de palmiste hasta el 20% de la dieta, disminuyó el costo del alimento. Se observó un alto grado de dependencia entre el contenido de fibra detergente neutro (%), la digestibilidad aparente de la materia seca (%) y la digestibilidad aparente de la proteína (%) (R2 = 0,732 y R2 = 0,774; p <0,000), respectivamente. Conclusiones. El palmiste se puede usar hasta el 10% en dietas para alevines de tilapia, sin afectar la digestibilidad aparente de los nutrientes, el crecimiento y el contenido nutricional en todo el cuerpo. La inclusión progresiva de palmiste en las dietas, disminuyó el costo del alimento, para un cultivo de tilapia más rentable.
Repositorio de la Un... arrow_drop_down Repositorio de la Universidad de CórdobaArticle . 2022Data sources: Repositorio de la Universidad de CórdobaLAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas; Revista MVZ CórdobaArticle . 2022 . Peer-reviewedLicense: CC BY NC SAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Repositorio de la Un... arrow_drop_down Repositorio de la Universidad de CórdobaArticle . 2022Data sources: Repositorio de la Universidad de CórdobaLAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas; Revista MVZ CórdobaArticle . 2022 . Peer-reviewedLicense: CC BY NC SAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2016 United KingdomPublisher:The Royal Society Ansari-Pour, N; Moñino, Y; Duque, C; Gallego, N; Bedoya, G; Thomas, MG; Bradman, N;The Palenque, a black community in rural Colombia, have an oral history of fugitive African slaves founding a free village near Cartagena in the seventeenth century. Recently, linguists have identified some 200 words in regular use that originate in a Kikongo language, with Yombe, mainly spoken in the Congo region, being the most likely source. The non-recombining portion of the Y chromosome (NRY) and mitochondrial DNA were analysed to establish whether there was greater similarity between present-day members of the Palenque and Yombe than between the Palenque and 42 other African groups (for all individuals,n= 2799) from which forced slaves might have been taken. NRY data are consistent with the linguistic evidence that Yombe is the most likely group from which the original male settlers of Palenque came. Mitochondrial DNA data suggested substantial maternal sub-Saharan African ancestry and a strong founder effect but did not associate Palenque with any particular African group. In addition, based on cultural data including inhabitants' claims of linguistic differences, it has been hypothesized that the two districts of the village (Abajo and Arriba) have different origins, with Arriba founded by men originating in Congo and Abajo by those born in Colombia. Although significant genetic structuring distinguished the two from each other, no supporting evidence for this hypothesis was found.
Europe PubMed Centra... arrow_drop_down Proceedings of the Royal Society B Biological SciencesArticle . 2016 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 15 citations 15 popularity Average influence Average impulse Top 10% Powered by BIP!more_vert Europe PubMed Centra... arrow_drop_down Proceedings of the Royal Society B Biological SciencesArticle . 2016 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2018Publisher:Frontiers Media SA Andrés J. Cortés; Andrés J. Cortés; Paola Skeen; Paola Skeen; Matthew W. Blair; María I. Chacón-Sánchez;Exploring the genomic architecture of species and populations divergence aids understanding how lineages evolve and adapt, and ultimately can show the repeatability of evolutionary processes. Yet, the genomic signatures associated with divergence are still relatively unexplored, leading to a knowledge gap on whether species divergence ultimately differs in its genetic architecture from divergence at other spatial scales (i.e., populations, ecotypes). Our goal in this research was to determine whether genomic islands of speciation are more prone to harbor within-species differentiation due to genomic features, suppressed recombination, smaller effective population size or increased drift, across repeated hierarchically nested levels of divergence. We used two species of Phaseolus beans with strong genepool and population sub-structure produced by multiple independent domestications each especially in Andean and Mesoamerican / Middle American geographies. We genotyped 22,531 GBS-derived SNP markers in 209 individuals of wild and cultivated Phaseolus vulgaris and Phaseolus lunatus. We identified six regions for species-associated divergence. Out of these divergence peaks, 21% were recovered in the four within-species between-genepool comparisons and in the five within-genepool wild-cultivated comparisons (some of the latter did retrieve genuine signatures of the well described multiple domestication syndromes). However, genomic regions with overall high relative differentiation (measured by FST) coincided with regions of low SNP density and regions of elevated delta divergence between-genepools (ΔDiv), independent of the scale of divergence. The divergence in chromosome Pv10 further coincided with a between-species pericentric inversion. These convergences suggest that shared variants are being recurrently fixed at replicated regions of the genome, and in a similar manner across different hierarchically nested levels of divergence, likely as result of genomic features that make certain regions more prone to accumulate islands of speciation and within-species divergence. In summary, neighboring signatures of speciation, adaptation and domestication in Phaseolus beans are influenced by ubiquitous genomic constrains, which may continue to fortuitously shape genomic differentiation at various others scales of divergence.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 34 citations 34 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2013 Argentina, Argentina, Argentina, SpainPublisher:IOP Publishing Joan Artigas; Emili García-Berthou; Delia Elena Bauer; Maria I Castro; Joaquín Cochero; Darío César Colautti; Agustina Cortelezzi; John C Donato; Arturo Elosegi; Claudia Feijoó; Adonis Giorgi; Nora Gómez; Leonardo Leggieri; Isabel Muñoz; Alberto Rodrigues-Capítulo; Anna M. Romaní; Sergi Sabater;handle: 10256/7522 , 2072/320166 , 10810/11319 , 11336/18466
We assessed the effects of nutrient enrichment on three stream ecosystems running through distinct biomes (Mediterranean, Pampean and Andean). We increased the concentrations of N and P in the stream water 1.6–4-fold following a before–after control–impact paired series (BACIPS) design in each stream, and evaluated changes in the biomass of bacteria, primary producers, invertebrates and fish in the enriched (E) versus control (C) reaches after nutrient addition through a predictive-BACIPS approach. The treatment produced variable biomass responses (2–77% of explained variance) among biological communities and streams. The greatest biomass response was observed for algae in the Andean stream (77% of the variance), although fish also showed important biomass responses (about 9–48%). The strongest biomass response to enrichment (77% in all biological compartments) was found in the Andean stream. The magnitude and seasonality of biomass responses to enrichment were highly site specific, often depending on the basal nutrient concentration and on windows of ecological opportunity (periods when environmental constraints other than nutrients do not limit biomass growth). The Pampean stream, with high basal nutrient concentrations, showed a weak response to enrichment (except for invertebrates), whereas the greater responses of Andean stream communities were presumably favored by wider windows of ecological opportunity in comparison to those from the Mediterranean stream. Despite variation among sites, enrichment globally stimulated the algal-based food webs (algae and invertebrate grazers) but not the detritus-based food webs (bacteria and invertebrate shredders). This study shows that nutrient enrichment tends to globally enhance the biomass of stream biological assemblages, but that its magnitude and extent within the food web are complex and are strongly determined by environmental factors and ecosystem structure. This study was funded by the project GLOBRIO of the Banco Bilbao Vizcaya Argentaria (BBVA) Foundation. Additional funding was obtained from the projects SCARCE (Consolider Ingenio 2010, CSD2009-00065) and CARBONET (CGL2011-30474-C02-01) of the Spanish Ministry of Science and Innovation. 13 p. + 2 p. (Erratum)
Recolector de Cienci... arrow_drop_down CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas; Environmental Research Letters; SEDICI (UNLP) - Universidad Nacional de La PlataArticle . 2013 . Peer-reviewedLicense: CC BYRecolector de Ciencia Abierta, RECOLECTA; DUGiDocs – Universitat de GironaArticle . 2013License: CC BY NC SAServicio de Difusión de la Creación IntelectualArticle . 2013Data sources: Servicio de Difusión de la Creación Intelectualadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 31 citations 31 popularity Top 10% influence Average impulse Top 10% Powered by BIP!visibility 12visibility views 12 download downloads 14 Powered bymore_vert Recolector de Cienci... arrow_drop_down CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas; Environmental Research Letters; SEDICI (UNLP) - Universidad Nacional de La PlataArticle . 2013 . Peer-reviewedLicense: CC BYRecolector de Ciencia Abierta, RECOLECTA; DUGiDocs – Universitat de GironaArticle . 2013License: CC BY NC SAServicio de Difusión de la Creación IntelectualArticle . 2013Data sources: Servicio de Difusión de la Creación Intelectualadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Master thesis 2018 Colombia Spanish; CastilianAuthors: Acosta Villota, Gyna Gysela;Acosta Villota, Gyna Gysela;La tecnología GMT ®(Tilapia genéticamente macho) se convierte en una alternativa viable para producir lotes monosexo machos de tilapia sin el uso de hormonas, pero como primer paso es necesario producir e identificar neohembras XY. El principal problema es identificar neohembras de hembras normales, sin necesidad de emplear pruebas de progenie que implica la producción de múltiples generaciones. El objetivo de este estudio fue producir ejemplares de neohembras de tilapia roja e identificar el genotipo de neohembras por citogenética clásica y molecular. Se feminizaron 800 larvas de tilapia suministrando una dosis de hormona 17β-estradiol a razón de 200mg/Kg de alimento por 30 días y un tratamiento control de 200 larvas sin hormona feminizante. A los 350g de peso se realizó sexaje manual por inspección de la papila urogenital y marcación con microchip para su posterior identificación. Los cromosomas se obtuvieron mediante la técnica de cultivo de linfocitos de sangre periférica y se emplearon las técnicas de bandeo cromosómico C, Q, G y NOR. Se genotipificaron los individuos de los dos tratamientos con el microsatélite UNH898, y se empleó una sonda que contenía el genotipo 260/290, específica para machos normales en la técnica FISH. Los resultados de los análisis mostraron que la especie Oreochromis sp., posee 2n=44 cromosomas y se encontraron patrones únicos de banda C sin evidencia de cromosomas sexuales. Se encontró un genotipo recurrente en machos, pero mediante citogenética molecular se logró evidenciar que no es exclusivo para machos porque hibridó en dispersiones cromosómicas de hembras. //Abstract: GMT ® technology (genetically male tilapia) becomes a viable alternative to produce male monosex lots of tilapia without the use of hormones, but as a first step, it is necessary to produce and identify neofemales XY. The main problem is to identify neofemales of normal females, without the need to use progeny tests that involve the production of multiple generations. The objective of this study was to produce neofemales from red tilapia and identify the genotype of neofemales by classical and molecular cytogenetics. About 800 tilapia larvae were feminized by supplying a dose of 17β-estradiol hormone at a rate of 200 mg / kg of feed for 30 days and a control treatment of 200 larvae without a feminizing hormone. At 350g of weight, manual sexing was performed by inspection of the urogenital papilla and microchip marking for later identification. Chromosomes were obtained by the peripheral blood lymphocyte culture technique and then used chromosome banding techniques C, Q, G and NOR. Individuals of the two treatments were genotyped with the UNH898 microsatellite, and a probe containing the genotype 260/290, specific for normal males in the FISH technique, was used. The results of the analysis showed that the species Oreochromis sp., has 2n = 44 chromosomes and unique C-band patterns were found without evidence of sex chromosomes. A recurrent genotype was found in males, but through molecular cytogenetics it was found that it is not exclusive for males because it hybridized in female chromosomal dispersions. Maestría
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1326::9eb0e431225ffc3a5b4065f64b522139&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2017 DenmarkPublisher:The Royal Society Alexander R. Gaos; Rebecca L. Lewison; Michael P. Jensen; Michael J. Liles; Ana Henriquez; Sofia Chavarria; Carlos Mario Pacheco; Melissa Valle; David Melero; Velkiss Gadea; Eduardo Altamirano; Perla Torres; Felipe Vallejo; Cristina Miranda; Carolina LeMarie; Jesus Lucero; Karen Oceguera; Didiher Chácon; Luis G. Fonseca; Marino Abrego; Jeffrey A. Seminoff; Eric E. Flores; Israel Llamas; Rodrigo Donadi; Bernardo Peña; Muñoz J; Daniela Alarcòn Ruales; Jaime A. Chaves; Sarah Otterstrom; Alan Zavala; Catherine E. Hart; Rachel Brittain; Joanna Alfaro-Shigueto; Jeffrey C. Mangel; Ingrid L. Yañez; Peter H. Dutton;The complex processes involved with animal migration have long been a subject of biological interest, and broad-scale movement patterns of many marine turtle populations still remain unresolved. While it is widely accepted that once marine turtles reach sexual maturity they home to natal areas for nesting or reproduction, the role of philopatry to natal areas during other life stages has received less scrutiny, despite widespread evidence across the taxa. Here we report on genetic research that indicates that juvenile hawksbill turtles ( Eretmochelys imbricata ) in the eastern Pacific Ocean use foraging grounds in the region of their natal beaches, a pattern we term natal foraging philopatry. Our findings confirm that traditional views of natal homing solely for reproduction are incomplete and that many marine turtle species exhibit philopatry to natal areas to forage. Our results have important implications for life-history research and conservation of marine turtles and may extend to other wide-ranging marine vertebrates that demonstrate natal philopatry.
Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2017Full-Text: http://europepmc.org/articles/PMC5579084Data sources: PubMed CentralRoyal Society Open Science; VBN; Aalborg University Research PortalArticle . 2017 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityRecolector de Ciencia Abierta, RECOLECTAArticle . 2017Data sources: Recolector de Ciencia Abierta, RECOLECTAVBN; Aalborg University Research PortalArticle . 2017add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 16 citations 16 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2017Full-Text: http://europepmc.org/articles/PMC5579084Data sources: PubMed CentralRoyal Society Open Science; VBN; Aalborg University Research PortalArticle . 2017 . Peer-reviewedLicense: Royal Society Data Sharing and AccessibilityRecolector de Ciencia Abierta, RECOLECTAArticle . 2017Data sources: Recolector de Ciencia Abierta, RECOLECTAVBN; Aalborg University Research PortalArticle . 2017add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1098/rsos.170153&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2019Publisher:American Geophysical Union (AGU) Authors: Elsa Arellano-Torres; Catalina Álvarez-Covelli; Juan José Kasper-Zubillaga; María del Socorro Lozano-García;Elsa Arellano-Torres; Catalina Álvarez-Covelli; Juan José Kasper-Zubillaga; María del Socorro Lozano-García;doi: 10.1029/2018pa003479
handle: 20.500.12495/1752
AbstractWe study shifts in phytoplankton proxies linked to terrigenous inputs and teleconnections in a core from Soledad Basin, Gulf of Ulloa, NW Mexico, spanning the end of the deglaciation and the Holocene. We used biogenic opal (% opal), organic carbon (% total organic carbon [TOC]), and inorganic carbon (% CaCO3) as proxies of productivity and opal/TOC and CaCO3/TOC ratios as proxies of nutrient uptake and C‐export by siliceous and carbonate organisms. We reconstructed terrestrial inputs and identified authigenic gypsum. Based on opal/TOC and CaCO3/TOC ratios, we found periodic changes of ~0.5, 1.1–1.8 ka cycle in phytoplankton proxies exporting siliceous and carbonate skeletal debris to the sediments. An increase in carbonate organisms occurred during 14–8.7 ka, corresponding to reduced El Niño–Southern Oscillation (ENSO)‐like variability, in parallel to the northward displacement of the Intertropical Convergence Zone (ITCZ) and an overall negative phase of the Pacific Decadal Oscillation (PDO). An increase in siliceous organisms occurred between 6 and 3 ka, coincident with strong ENSO‐like conditions, southern migration of ITCZ, and less intense but more frequent positive PDO‐hydrological variability. Grain size analyses show significant amounts of fine fraction (dust <6.6 μm) present during the early‐ to mid‐Holocene in agreement to extreme weather on land, with episodes of eolian and fluvial transport to the sea. The ENSO‐like variations influenced biological C‐export producers on a scale of 1.1–1.8 ka, but PDO‐related variability is uncertain. We suggest that Holocene drivers for phytoplankton successions are changes in insolation, ITCZ migration, California Current upwelling, nutrient inputs by advection, and terrestrial sources.
Paleoceanography and... arrow_drop_down Paleoceanography and PaleoclimatologyArticle . 2019 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2018pa003479&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert Paleoceanography and... arrow_drop_down Paleoceanography and PaleoclimatologyArticle . 2019 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2018pa003479&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2018Publisher:Cold Spring Harbor Laboratory Funded by:NSF | DISSERTATION RESEARCH: Th...NSF| DISSERTATION RESEARCH: The evolutionary origin and genetics of color pattern diversity in Phyllobates poison frogsAuthors: Roberto Márquez; Valeria Ramírez-Castañeda; Adolfo Amézquita;Roberto Márquez; Valeria Ramírez-Castañeda; Adolfo Amézquita;doi: 10.1101/460865 , 10.1111/evo.13672
pmid: 30593663
AbstractToxicity is widespread among living organisms, and evolves as a multimodal phenotype. Part of this phenotype is the ability to avoid self-intoxication (autoresistance). Evolving toxin resistance can involve fitness tradeoffs, so autoresistance is often expected to evolve gradually and in tandem with toxicity, resulting in a correlation between the degrees of toxicity and autoresistance among toxic populations. We investigate this correlation inPhyllobatespoison frogs, notorious for secreting batrachotoxin (BTX), a potent neurotoxin that targets sodium channels, using ancestral sequence reconstructions of BTX–sensing areas of the muscular voltage-gated sodium channel. Reconstructions suggest that BTX resistance arose at the root ofPhyllobates, coinciding with the evolution of BTX secretion. After this event little or no further evolution of autoresistance seems to have occurred, despite large increases in toxicity throughout the history of these frogs. Our results therefore provide no evidence in favor of an evolutionary correlation between toxicity and autoresistance, which conflicts with previous work. Future research on the functional costs and benefits of mutations putatively involved in BTX resistance, as well as their prevalence in natural populations should shed light on the evolutionary mechanisms driving the relationship between toxicity and autoresistance inPhyllobatesfrogs.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1101/460865&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routeshybrid 11 citations 11 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1101/460865&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2020 Colombia, SpainPublisher:Elsevier BV Isaac Kuzmar; José Rafael Consuegra; Jezael Jiménez; Einer López; José V. Hernández; Ana Noreña-Peña;This paper presents data collected through a questionnaire for the estimation of body dysmorphic disorder known as vigorexy, weight level and levels of exercise dependence in individuals from Barranquilla, Colombia who attend local gyms, based on their physical activity, food supplements eat- ing habits, psychological pressure, and risk of muscle dys- morphia. The Data contains 8 tributes and 200 records; la- belling obesity range according to WHO into normal, over- weight or obesity. All data was collected in person and di- rectly from users. This data can be used to generate scien- tific research and intelligent computational tools to identify the obesity level and muscle dysmorphia risk of an individ- ual and to build recommender systems that monitor health and mental status.
Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2020Full-Text: http://europepmc.org/articles/PMC7341342Data sources: PubMed CentralRecolector de Ciencia Abierta, RECOLECTAArticle . 2020Full-Text: https://doi.org/10.1016/j.dib.2020.105967Data sources: Recolector de Ciencia Abierta, RECOLECTARepositorio Institucional de la Universidad de AlicanteArticle . 2020Data sources: Repositorio Institucional de la Universidad de AlicanteRepositorio Universidad Simón Bolívar; LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas LatinoamericanasArticle . 2020License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.dib.2020.105967&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 3 citations 3 popularity Average influence Average impulse Average Powered by BIP!more_vert Europe PubMed Centra... arrow_drop_down Europe PubMed CentralArticle . 2020Full-Text: http://europepmc.org/articles/PMC7341342Data sources: PubMed CentralRecolector de Ciencia Abierta, RECOLECTAArticle . 2020Full-Text: https://doi.org/10.1016/j.dib.2020.105967Data sources: Recolector de Ciencia Abierta, RECOLECTARepositorio Institucional de la Universidad de AlicanteArticle . 2020Data sources: Repositorio Institucional de la Universidad de AlicanteRepositorio Universidad Simón Bolívar; LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas LatinoamericanasArticle . 2020License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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