• European Marine Science
• 2013-2022close
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Figure 8 - Distribution of Laticauda schistorhynchus, regional view and zoomed in (A).

Figure 8 - Distribution of Harpacticella species. A Harpacticella amurensis B Harpacticella inopinata C Harpacticella paradoxa D Harpacticella lacustris E Harpacticella oceanica F Harpacticella itoi G Harpacticella jejuensis sp. n.

Principal Component Analysis (PCA). Individuals from each group are marked with red squares (HT), orange squares (HT-E2), blue circles (LT) or purple circles (LT-E2). (TIFF 2702 kb)

Figure 3a Bayesian phylogenetic tree based on mtDNA cytochrome oxidase sub unit I (COI) sequences showing the candidate species or molecular operational taxonomic units (MOTUs) identified within Amphilius uranoscopus and A. natalensis from the Eastern Highlands of Zimbabwe. Well supported nodes are shown by a solid circle. The indicated candidate species or OTUs were identified using the GMYC method based on trees that were built using three different combinations of priors and rates of molecular evolution: (i) yule model and a constant clock (YULE), (ii) coalescent model with constant population size and a constant clock (CONC) and (iii) yule model and a relaxed clock (RELA).

Hardware setup of shadow reflex assay. (A) Image of lid of behavioural chamber taken from the perspective of the subject with 520 nm light array switched on. Other wavelength arrays can be seen switched off beneath it. (B) Image of occupied hemispherical 36-well behaviour plate placed in position under 520 nm light. Adult Platynereis worms can be seen attached to the bottom of these wells ready for the shadow reflex assay to be conducted. (C) Photon irradiance (photons/cm2/s) spectra and (D) total photon irradiance (photons/cm2/s) (AUC) of each light stimulus used in the shadow reflex assay. The same white light stimulus is shown in both graphs to illustrate the intensity disparity between 400 and 470 nm and 500â 590 nm stimuli. (TIFF 6563 kb)

Additional file 7: Figure S7. Whole-head serial sectioning and staining for Hh. All coronal paraffin sections ordered from ventral to dorsal. The dark anterior pigment corresponds to the frontal eye (FE). The pigments in the periventricular grey along the central canal (CC), posterior to the brain, correspond to the Hesse eyecups (HE). Hedgehog is also expressed in the floor plate (FP), posterior to the brain as previously described by Shimeld 1999. Abbreviations: CC: Central Canal; FP: Floor plate; FE: Frontal eye; HE: Hesse Eyecups; IO: Infundibular organ; M: Muscle; N: Notochord; NP: Neuropore.

This is an image of a Herring Specimen. This specimen is observed in Survey of Vertebrates, Zoology 224. This image was created as part of the University of Alberta OER image database project in Biological Sciences. Identifier 2041I.

This study analyses seismic data to investigate the kinematic indicators within the mass transport deposits (MTDs) of the Donegal Barra Fan complex in the Rockall Trough, along the NW European continental margin. Five episodes of mega-scale MTDs (DBF-01, -02, -03, -04 and -05) are identified. DBF-01 is the largest MTD in the NW British continental margin, comprising 1907 km3 of sediments. Fold-and-thrusts were identified within the MTDs where they attain maximum thickness of c. 300–380 ms TWT, but not at the toe region. This indicates that local erosion and deceleration caused bulking up of the MTD volume, but the MTD was not fully arrested due to the high mobility of the mass flow. MTD thickness distribution and thrust fault orientations indicate source areas and flow direction of MTD. The MTDs show a compensational stacking pattern with earlier deposits influencing the position and flow direction of succeeding slides, suggesting that glaciogenic debris flows are sensitive to topographic variability. We propose that increased sediment input associated with at least five expansions of the British–Irish Ice Sheet to the shelf edge led to the development of these MTDs and that the youngest of them, DBF-05, corresponds to the Last Glacial Maximum.

Repository for underwater UV camera trap data, collected during Summer 2021 at Driftwood Park, Admiralty Bay. Photos focus on octopus den locations and octopus behavior but capture regular conspecific and interspecific interactions.