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25 Research products, page 1 of 3

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  • National Library of Serbia - Digital Object Identifier Repository
  • European Marine Science

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  • Open Access English
    Authors: 
    Šantić Mate; Pallaoro Armin; Markov Martina; Jardas Ivan;
    Publisher: Archives of Biological Sciences
    Country: Serbia

    The relationship between classical morphometric measurements (12) and meristic traits (8) was examined in 435 specimens of megrim (214 males, 221 females) caught in the eastern central Adriatic Sea. Total length of all specimens ranged from 9.0 to 34.6 cm. Morphological differences between males and females was not marked. Biometric analysis of the morphometric and meristic traits indicated a homogenous morphology stock of Lepidorhombus whiffiagonis in the eastern central Adriatic Sea. Changes in some morphometric traits obtained in conjunction with an increase in body length showed that smaller specimens have longer standard length, head, pectoral fins and preanal distance than adult specimens. The positive correlation recorded for the maximum body height indicated that the body slightly shortened with megrim growth. The morphometric and meristic traits of megrim from different Mediterranean and northeastern Atlantic areas are mostly in accordance with previously published articles.

  • Open Access English
    Authors: 
    Đurić-Jočić Dragana; Pavlicić Nevenka; Gazivoda Vesna;
    Publisher: Vojnosanitetski pregled
    Country: Serbia

    Pathological lying is compulsive and impulsive, pervasive conduct of the individual, does not aim to achieve material gain, but sometimes there are also self-defeating quality. A small number of research works on intelligence or personality of people who exhibit pathological lying, because they are not operationalized criteria of disorder and methodology of the test assessment. The aim of this paper is presenting how psychological assessment can respond to a number of important questions: a differential diagnostic dilemma (distinguishing pathological lying of confabulations, delusions beliefs and simulation), what is the amount and structure of intelligence in these subjects, if the person proves neuropsychological deficits that are expected in the prefrontal localization, whether pathological lying beside respondent meets criteria for personality disorder, identifying roles / motives which lie in a dynamic personality, the family system and social environment. The paper outlines the specific psychological tests to be applied in order to respond to these questions and how to harmonize the methods of testing with patients who exhibit pathological lying.

  • Open Access English
    Authors: 
    Đikanović Vesna; Skorić Stefan; Gačić Zoran;
    Publisher: Archives of Biological Sciences
    Country: Serbia

    Element concentrations in selected fish species from different trophic levels were analyzed. The following fish species were analyzed: common nase (Chondrostoma nasus), roach (Rutilus rutilus), freshwater bream (Abramis brama), barbel (Barbus barbus), Prussian carp (Carassius gibelio),chub (Squalius cephalus), European perch (Perca fluviatilis), wels catfish (Silurus glanis)and northern pike (Esox lucius). Fish were collected from the Međuvršje Reservoir (West Morava River Basin, western Serbia) during 2012, and samples of liver, muscle and gills were analyzed for As, B, Ba, Cd, Co, Cr, Cu, Fe, Hg, Li, Mn, Mo, Ni, Pb, Sr, and Zn using inductively coupled plasma optical emission spectrometry (ICP-OES). The liver and gills had the highest measured element concentrations, with Cu, Zn, Fe and Sr being the most prominent. The bioaccumulation of metals was species-specific, with the accumulation exhibiting the following trends: Prussian carp > northern pike > freshwater bream > European perch > chub > common nase > barbell > roach > wels catfish; Li>Pb>Zn>Cu>Fe>Ba>Mn>Sr>Cr>As>Mo>Ni>B, in all examined species; for Co, Cd and Hg, the bioaccumulation factor (BAF) was 0. Results of this study point to the tissue-specific differences in element concentrations, and to distinct differences between fish species regarding the accumulation patterns: common nase, with the highest accumulation observed in the liver, and Prussian carp, with the highest accumulation observed in the gills. [Projekat Ministarstva nauke Republike Srbije, br. 173045 i br. 37009]

  • Open Access English
    Authors: 
    Georgieva Еlenka; Yancheva Vesela; Velcheva Iliana; Becheva Maria; Stoyanova Stela;
    Publisher: Archives of Biological Sciences
    Country: Serbia

    Topolnitsa Reservoir is located in a region of Bulgaria rich in copper mines where intensive mining has been ongoing for several decades. General data on the ecological status of the reservoir and the effects of metal on fish is relatively scarce. The first aim of the study was to measure the concentrations of six metals (As, Cd, Cu, Ni, Pb and Zn) in water samples and in the gills of European perch (Perca fluviatilis L.). The second objective was to examine gill structure and determine the severity of histological alteration as a result of metal exposure. Surface water and fish gill samples were collected in spring, summer and autumn in 2012 and metal and histological analyses were performed. Metal concentrations in the water samples varied, but only Cu concentrations were determined in all three seasons and they were higher than the maximum permissible levels. The gill metal concentrations were significantly higher (P<0.05) than in the water. Examination of gill structure revealed the presence of proliferative and degenerative changes, as well as changes in the blood vessels. Histological lesions were similar in their severity in all three seasons. This study provides the first information about metal effects on the morphology of European perch gills from Topolnitsa Reservoir. It can be concluded that the metal contamination of the Topolnitsa Reservoir and fish is chronic and that it can negatively affect the structure and function of fish gills. As metals display a tendency to accumulate in fish gills, their effects are expected to become more severe with time, as they affect gill functions.

  • Open Access English
    Authors: 
    Lončar Biljana Lj.; Pezo Lato L.; Lević Ljubinko B.; Filipović Vladimir S.; Nićetin Milica R.; Knežević Violeta M.; Kuljanin Tatjana A.;
    Publisher: Acta periodica technologica
    Country: Serbia

    Osmotic treatment of the fish Carassius gibelio was studied in two osmotic solutions: ternary aqueous solution - S1, and sugar beet molasses - S2, at three solution temperatures of 10, 20 and 30oC, at atmospheric pressure. The aim was to examine the influence of type and concentration of the used hypertonic agent, temperature and immersion time on the water loss, solid gain, dry mater content, aw and content of minerals (Na, K, Ca and Mg). S2 solution has proven to be the best option according to all output variables.[ Projekat Ministarstva nauke Republike Srbije, br. TR 31055]

  • Open Access English
    Authors: 
    Mitrović Olivera; Mićić Mileva; Čokić V.; Koko Vesna; Đikić Dragoslava; Budeč Mirela; Vignjević Sanja; Breković Tijana;
    Publisher: Archives of Biological Sciences
    Country: Serbia

    We studied TOP2A amplification (using FISH methods), and TOP2A and BRCA1 protein overexpression (immunohistochemistry) in four molecular subtypes of breast cancer. Of 53 patients, 32 showed TOP2A and 38 showed BRCA1 overexpression. The highest percentage of TOP2A amplification (47.8%) and deletion (13%) was detected in Luminal B subtypes. Of 11 Luminal B tumors with TOP2A amplification, 9 (81.8%) overexpressed TOP2A. BRCA1 protein overexpression showed significant positive correlation with TOP2A protein expression. BRCA1 and TOP2A proteins exhibited similar patterns of expression in Luminal B and triple-negative breast cancer, suggesting the same prognosis in those patients. [Projekat Ministarstva nauke Republike Srbije, br. 175053]

  • Open Access English
    Authors: 
    Radulović Snežana; Boon P.J.; Laketić Dušanka; Simonović P.; Puzović S.; Živković Milica; Jurca Tamara; Ovuka M.; Malaguti S.; Teodorović Ivana;
    Publisher: Archives of Biological Sciences
    Country: Serbia

    This paper describes the first steps in gathering biological data to assess the conservation value of rivers in Serbia, using SERCON (System for Evaluating Rivers for Conservation). SERCON was developed in the UK to improve consistency in assessments of river ‘quality’ by using a scoring system to evaluate habitat features and species groups, catchment characteristics, and the potential impacts to which river systems may be subjected. This paper provides checklists for aquatic, semiaquatic and marginal plants, macroinvertebrates, fish and birds associated with rivers in Serbia, collated from a wide range of published and unpublished sources. These lists should be regarded as provisional because few wide-ranging biological surveys have been carried out specifically on Serbian rivers; further revisions are likely as more information becomes available in future. Ultimately, the work will benefit regulators and decision-makers with responsibility for river management under the new Water Law, and contribute to river protection and conservation in Serbia. [Acknowledgments. The hydromorphology dataset was prepared for the project ‘Biosensing Technologies and Global System for Long-Term Research and Integrated Management of Ecosystems’ (Biosensing tehnologije i globalni sistem za kontinuirana istrazivanja i integrisano upravljanje ekosistema) III 043002 grant, while the biodiversity dataset was prepared the project Plant biodiversity of Serbia and the Balkans – assessment, sustainable use and protection (Biodiverzitet biljnog sveta Srbije i Balkanskog poluostrva – procena, odrzivo koriscenje i zastita) 173030 Grant, supported by Ministry of Education and Science, Republic of Serbia]

  • Open Access English
    Authors: 
    Rašković Božidar S.; Stanković Marko B.; Marković Zoran Z.; Poleksić Vesna D.;
    Publisher: Journal of Agricultural Sciences, Belgrade
    Country: Serbia

    This manuscript describes the importance of using histological methods to assess the effects of feed on the liver and intestine of fish. Due to the constantly increasing world production of fish and other aquatic organisms, it is necessary to replace fishmeal and fish oil in diets with less expensive raw materials of plant origin. Due to the increased fiber content, increased presence of carbohydrates, antinutritional factors, and inappropriate content of amino acids and new compounds can have negative effects on the digestive system of fish and therefore on fitness, health and production characteristics of cultivated fish. The liver and intestines are the most important organs for the digestion and absorption of nutrients from feed. Therefore, monitoring histological structure of fish liver and intestine is the method of choice in assessing the effects of nutrient mixtures that use raw materials of plant origin. For both of these vital organs the normal histological structure and the most important results obtained by research are discussed. This paper presents a critical review of the histological methods used in research on feed effects. Results related to the negative effects of raw soy-based feed on the occurrence of enteritis in carnivorous fish species are discussed. The results point out that use of modern approach in fish pathology such as improved histochemical, stereological, scoring, and other analytical methods could be a beneficial approach in an accurate assessment of new feed effects on fish.

  • Open Access English
    Authors: 
    Hose Dirk; Seckinger Anja; Jauch Anna; Reme Thierry; Moreaux Jerome; Bertsch Uta; Neben Kai; Klein Bernard; Goldschmidt Hartmut;
    Publisher: Srpski arhiv za celokupno lekarstvo
    Country: Serbia

    Multiple myeloma patients’ survival under treatment varies from a few months to more than 15 years. Clinical prognostic factors, especially beta2-microglobulin (B2M) and the international staging system (ISS), allow risk assessment to a certain extent, but do not identify patients at very high risk. As malignant plasma cells are characterized by a variety of chromosomal aberrations and changes in gene expression, a molecular characterization of CD138-purified myeloma cells by interphase fluorescence in situ hybridization (iFISH) and gene expression profiling (GEP) can be used for improved risk assessment. iFISH allows a risk stratification with presence of a translocation t(4;14) and/or deletion of 17p13 being the best documented adverse prognostic factors. A deletion of 13q14 is no longer considered to define adverse risk. Patients harbouring a t(4;14) seems to benefit from a bortezomib- or lenalidomide containing regimen, whereas patients with deletion 17p13 seem only to benefit from a high dose therapy approach using long term bortezomib (in induction and maintenance) and autologous tandem-transplantation as used in the GMMG-HD4 trial, or the total therapy 3 concept. Gene expression profiling allows the assessment of high risk scores (IFM, UAMS), remaining prognostic despite treatment with novel agents, and prognostic surrogates of biological factors (e.g. proliferation) and (prognostic) target gene expression (e.g. Aurora-kinase A). Thus, assessment of B2M and ISS-stage, iFISH, and GEP is considered extended routine diagnostics in therapy requiring multiple myeloma patients for risk assessment and, even now, to a certain extent selection of treatment.

  • Open Access English
    Authors: 
    Kuzmanović Jelena; Ašanin Ružica; Baltić M.; Mišić D.; Dimitrijević Mirjana; Stojanović Marija; Ašanin N.; Kovačević I.;
    Publisher: Acta veterinaria
    Country: Serbia

    Listeria monocytogenes is a bacterium that is pathogenic for man and for most animal species. Listeriosis is a generalized infection that starts after ingestion of the causative agent L. monocytogenes (Finlay, 2001). Food that is not properly thermically processed, long storage of such food, food that is produced in inadequate hygienic food plants, as well as cooked-cooled ready to eat food (RTE) is the ideal medium for listeria multiplication. High risk food originated from fish, fish products and sea products comprised of: molluscs (fresh of frozen shellfish, crustaceans shelled or not), fresh fish (ready to eat without cooking), fish products packed with brine (NaCl&amp;amp;lt;6%), (salted, marinated, fermented, cold smoked and fish in brine), thermically treated fish and crustacean products (pasteurization, cooking, hot smoking, including pre-cooking and panning). In this research, fish samples, fish products and sea products from Serbian markets were examinated such as: fresh fish (cooled), frozen food (fish and sea products - cuttlefish, squid, octopus, shellfish, crustaceans and shrimps), panned products; smoked fish, salted fish, thermally treated fish and fish products, semi-canned fish and canned fish. Microbiological testing has been performed according to internationally prescribed standards ISO 11290-1 (1996) &amp;amp;quot;Microbiology of food and animal feed stuffs - Horizontal method for the detection and enumeration of Listeria monocytogenes&amp;amp;quot;. There were 470 samples from fish products and sea products. Presence of Listeria spp was registered in 58 samples (12.34%). Listeria monocytogenes was found in 1.92% samples (9 isolates), which makes 15.52% of the total Listeria that were isolated from the tested food. Other isolated Listeria belong to the following species: L. innocua (8.51%), L.welshimeri (1.28%), L.welshimeri/innocua (0.21%), L. grayi (0.21%) and L. seeligeri (0.21%). Exceptional viability of Listeria monocytogenes in the food tested was documented, also (freezing temperature - 18oC, five months).