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1,636 results for “marine species”
Figs 44–66 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 44–66. Ferocia houkiana Goeyers & Van de Vijver sp. nov. LM and SEM. Campbell Island holotype population, sample BAS284 (BR-4578). LM. 44–49. Several frustules in girdle view, often connected to each other. 50–51. Internal valves. 52–62. Several valves in valve face view clearly showing the central ring of spines. SEM. 63. Frustule in girdle view with the narrow copulae. 64. Frustule in girdle view with the narrow copulae on one side and one the side showing the broad mantle with one indicated rimoportula. 65. External view of a valve face and the girdle. Note the central ring of partly hollow spines. 66. External view of two valves connected via their linking spines. The arrow indicates the Müller step. Scale bars = 10 μm.
Figs 20–27 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 20–27. Angusticopula chilensis (Grunow) Houk et al. SEM. Campbell Island epitype population, sample BAS286. 20–22. SEM view of several valves in girdle view showing the ligulate, open, narrow girdle bands. The arrows indicate the ligulae in Fig. 20, the rimmed mantle edge in Fig. 21 and the fimbriate pars interior of the copulae in Fig. 22. 23. External view of a valve face. 24. External detail of the very fine striae and the small, rounded areolae. 25. Internal view of an entire valve showing the rimoportulae and the thick mantle. 26. External view of the mantle/valve face junction with several openings of the rimoportulae (arrows). 27. Internal detail of the valve mantle with some rimoportulae. Scale bars: 20–23, 25–26 = 10 μm; 24, 27 = 1 μm.
Figs 28–36 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 28–36. Angusticopula cosmica Goeyers & Van de Vijver sp. nov. LM. Campbell Island holotype population, sample BAS303 (BR-4577). 28. Frustule in girdle view showing the discoid chloroplasts. 29. Frustule in valve face view showing the discoid chloroplasts. 30–36. Several valves in valve face view showing clearly the submarginal ring of rimoportulae (arrows) and the striated valve face margin. Scale bar = 10 μm.
Figs 1–19 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 1–19. Angusticopula chilensis (Grunow) Houk et al. LM. Campbell Island epitype population, sample BAS286. 1–6, 12–13. Several frustules in girdle view. 5, 12. Internal valves. 7–11, 14–19. Several valves in valve face view clearly showing the marginal rimoportulae. Scale bar = 10 μm.
Genetic diversity of a marine foundation species, Laminaria hyperborea (Phaeophyceae Laminariales), along the coast of Ireland
<p><span><span><span><span><span><span><span><span><span><span><span>Worldwide, kelp populations are stressed by warming, increased storms and other man-driven disturbances<i>. </i>Marine population distributions are projected to retreat poleward with climate change if they cannot adapt to changing conditions, which would potentially lead to a regime shift in subtidal habitats. In Northern Europe, <i>Laminaria hyperborea</i>is a subtidal ecosystem engineer whose distribution has shifted over millennia, leaving predicted areas of high genetic diversity from the last glacial maximum (LGM) near its southern distribution limit in the Iberian Peninsula. In Ireland, <i>L. hyperborea </i>structures communities by supporting diverse faunal assemblages and producing large quantities of organic carbon throughout the year. We investigated the genetic diversity of eight populations ranging from the southern coast to the northwest of Ireland using nine microsatellite loci. Diversity was found to be highest in Lough Hyne, a Special Area of Conservation (SAC), near the predicted climate refugium. We found evidence of isolation by distance, with high connectivity between populations that were geographically close, likely driven by short range dispersal of <i>L. hyperborea</i>propagules. Genetic diversity (measured as expected heterozygosity and allelic richness) was highest at Lough Hyne, and decreased northwards, as predicted from past range shifts. Expected heterozygosity was highest at Lough Hyne (0.706) and decreased northward, with the lowest value at Bridges of Ross (0.283). Based on these patterns, further fine-scale investigation into population diversity, dispersal and potential resilience in Irish kelp forests are necessary as warming and non-native species are observed more and more frequently.</span></span></span></span></span></span></span></span></span></span></span></p>
Mateo-Ramírez et al Species_Chapter 25_Alboran Sea-Ecosystems and Marine Resources
<p>Lists of species include in conservation agreements or relevant by their singularity present in MPA and KBA of Alboran Sea and adjacent areas. </p> <p>This dataset is part of the Chapter 25 Marine Protected Areas and Key Biodiversity Areas of the Alboran Sea and Adjacent Areas. In J. C. Baéz et al. (eds.), Alboran Sea - Ecosystems and Marine Resources, https://doi.org/10.1007/978-3-030-65516-7_25</p>
Data from: Preserved collagen reveals species identity in archaeological marine turtle bones from Caribbean and Florida sites
Advancements in molecular science are continually improving our understanding of marine turtle biology and evolution. However, there are still considerable gaps in our understanding, such as past marine turtle distributions, which can benefit from advanced zooarchaeological analyses. Here we apply collagen fingerprinting to 130 archaeological marine turtle bone samples up to 2500 years old from the Caribbean and Florida's Gulf Coast for faunal identification, finding the vast majority of samples (88%) to contain preserved collagen despite deposition in the tropics. All samples can be identified to species-level with the exception of the Kemp's ridley (Lepidochelys kempii) and olive ridley (L. olivacea) turtles, which can be separated to genus level, having diverged from one another only ~5 million years ago. Additionally, we identify a single homologous peptide that allows the separation of archaeological green turtle samples, Chelonia spp., into two distinct groups, which potentially signifies a difference in genetic stock. The majority of the archaeological samples are identified as green turtle (Chelonia spp.; 63%), with hawksbill (Eretmochelys imbricata; 17%) and ridley turtles (Lepidochelys spp.; 3%) making up smaller proportions of the assemblage. There were no molecular identifications of the loggerhead turtle (Caretta caretta) in the assemblage despite 9% of the samples being morphologically identified as such, highlighting the difficulties in relying on morphological identifications alone in archaeological remains. Finally, we present the first marine turtle molecular phylogeny using collagen (I) amino acid sequences and find our analyses match recent phylogenies based on nuclear and mitochondrial DNA. Our results highlight the advantage of using collagen fingerprinting to supplement morphological analyses of turtle bones and support the usefulness of this technique for assessing their past distributions across the Caribbean and Florida's Gulf Coast, especially in these tropical environments where DNA preservation may be poor.
FIGURE 2 in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 2. Morphology and ontogenetic development of microscleres of Latrunculiidae: A. Ontogeny of Latrunculia [BMNH 1887.5. 2.237, Latrunculia bocagei Ridley and Dendy, 1886 (from Samaai and Kelly, 2002)] B. Ontogeny of Tsitsikamma [BMNH 1997.7. 3.2, Tsitsikamma favus Samaai and Kelly, 2002]. C. Ontogeny of Sceptrella [BMNH 1870.5. 3.22 Sceptrella regalis Schmidt, 1870 (from Samaai & Kelly 2002)]; D. Ontogeny of Cyclacanthia [SAMH 5082, Cyclacanthia mzimayensis sp. nov.]; E. Isospinodiscorhabd of C. cloverlyae sp. nov. [SAM H 5080]; F. Isospinodiscorhabd of C. bellae Samaai & Kelly [BMNH 2003.1.10.1]; G – H, Isospinodiscorhabd of C. mzimayiensis sp. nov. [SAM H 5082 and SAM H 5081].
FIGURE 1. Collection localities for Cyclacanthia n. g in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 1. Collection localities for Cyclacanthia n. g. spp. on the east and south coasts of South Africa: A. C. bellae (Samaai & Kelly); B. C. mzimayiensis sp. nov.; C. C. cloverlyae sp. nov.
FIGURE 3. A in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 3. A. Gross morphology of genus holotype Cyclacanthia bellae Samaai & Kelly [BMNH 2003.1.10.1]; B. Gross morphology of C. cloverlyae sp. nov. [SAMH 5080]; C – D. Gross morphology of C. mzimayiensis sp. nov. [SAMH 5082 and SAM H 5081]; E – F. Gross skeletal architecture of the holotype, C. bellae, showing several large tracts in cross section, tangential ectosomal skeleton, and the abundant interstitial microscleres.
FIGURE 3 in On a new marine podocopid genus and species (Ostracoda: Hemicytheridae) from Brazil
FIGURE 3. Bulbocythere calida gen. et sp. nov. 1 – 2 (MP-O- 1396, female, holotype). 1 — LV, 2 — LV, internal view. 3 – 6 (MP- O- 2584, female, paratype) 3 — LV, 4 — RV, 5 — LV, internal view, 6 — RV, internal view. 9 – 12 (MP-O- 2585, male, paratype) 9 — LV, 10 — RV, 11 — LV, internal view, 12 — RV, internal view. 7 – 8 (MP-O- 2584, female, paratype) 7 — LV, central muscle scars, 8 — RV, central muscle scars. 13 – 14 (MP-O- 2585, male, paratype) 13 — RV, central muscle scars, 14 — LV, central muscle scars. 15 (MP-O- 2586, female, paratype) carapace, dorsal view. 16 (MP-O- 2587, male, paratype) carapace, dorsal view. 17 (MP-O- 2588, male, paratype) anterior and posterior marginal pore-canals, not to scale. Scale bars: 1 – 6, 9 – 12, 15 – 16 (100 µm); 7 – 8 (20 µm); 13 – 14 (50 µm).
Figure 13 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 13. Scanning electron micrographs of Chondracanthus kabatai sp. n. from Zenopsis conchifer Lowe. A. Genito-abdomen ventral view (arrow). B–D. Male attached to genito-abdomen of female. (m- male)
Figure 12 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 12. Scanning electron micrographs of Chondracanthus kabatai sp. n., non-type female from Zenopsis conchifer Lowe. A, B. Cephalic appendages. C, D. Mandible. E. Maxilla. F. Maxilliped.
Figure 10 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 10. Chondracanthus kabatai sp. n., non-type female from Zenopsis conchifer Lowe. A. Antennule. B. Antennule apex. C, D. Antenna. E, F. Mandible. G. Maxillule. H, I. Maxilla. J. Maxilliped. K. Leg 1. L. Leg 2. M. Ventral view of genito-abdomen. N. Caudal ramus.
Figure 11 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 11. Scanning electron micrographs of Chondracanthus kabatai sp. n., non-type female from Zenopsis conchifer Lowe. A. Head ventral view showing antennule and antenna. B, C. Antenna. D. Antennule.
Figure 9 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 9. Chondracanthus kabatai sp. n. from Zenopsis conchifer Lowe. A, B. Holotype, female, dorsal and ventral view. C. Paratype, female (ZSI/WGRC/IR/INV/11732), dorsal view, D. Paratype, female (ZSI/WGRC/IR/INV/11729), dorso-lateral view.
Figure 6 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 6. Acanthochondria krishnai sp. n., non-type male from Uranoscopus guttatus Cuvier. A. Habitus lateral view. B. Antennule. C. Antenna. D. Mandible. E. Maxillule. F. Maxilla. G. Maxilliped. H. Leg 1. I. Leg 2. J. Lateral view of genito-abdomen. K. Ventral view of genito-abdomen.
Figure 7. A, B in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 7. A, B. Site of attachment of Chondracanthus kabatai sp. n. (arrows) on its host fish Zenopsis conchifer Lowe.
Figure 5 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 5. Acanthochondria krishnai sp. n., non-type male from Uranoscopus guttatus Cuvier. A. Habitus lateral view. B. Antennule. C. Antenna.
Figure 4 in New species of Acanthochondria Oakley, 1930 and Chondracanthus Delaroche, 1811 (Copepoda: Cyclopoida: Chondracanthidae) parasitizing marine fishes from Indian waters
Figure 4. Acanthochondria krishnai sp. n., paratype, female from Uranoscopus guttatus Cuvier. A. Mandible. B. Maxillule. C. Maxilla. D. Maxilliped. E. Maxilliped apex. F. Leg 1. G. Leg 2. H, I. Genito-abdomen with rami, ventral and ventro-lateral views. J. Rami.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.