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976 results for “Pacific Islands”
FIGURE 9. Bathyraja smirnovi, BSKU 110851, 296 in Bathyraja (Arctoraja) sexoculata sp. nov., a new softnose skate (Rajiformes Arhynchobatidae) from Simushir Island, Kuril Islands (western North Pacific) with special reference to geographic variations in Bathyraja (Arctoraja) smirnovi
FIGURE 9. Bathyraja smirnovi, BSKU 110851, 296 mm TL, immature male, off Ishikawa Prefecture, Japan, southern Sea of Japan, fresh condition. (A) dorsal view, (B) ventral view
FIGURE 2 in Bathyraja (Arctoraja) sexoculata sp. nov., a new softnose skate (Rajiformes Arhynchobatidae) from Simushir Island, Kuril Islands (western North Pacific) with special reference to geographic variations in Bathyraja (Arctoraja) smirnovi
FIGURE 2. Bathyraja sexoculata sp. nov., ZMMU-P 24098, holotype, 346 mm TL, immature male, preserved. (A) dorsal view, (B) ventral view
FIGURE 11 in Bathyraja (Arctoraja) sexoculata sp. nov., a new softnose skate (Rajiformes Arhynchobatidae) from Simushir Island, Kuril Islands (western North Pacific) with special reference to geographic variations in Bathyraja (Arctoraja) smirnovi
FIGURE 11. Frequency distribution of selected meristic counts in Bathyraja sexoculata sp. nov. and B. smirnovi. (A) total tail thorns (predorsal + interdorsal), (B) nuchal thorns, (C) predorsal caudal vertebrae. Red, B. sexoculata; black, B. smirnovi from southern Sea of Japan; gray, B. smirnovi from northern Sea of Japan; white, B. smirnovi from Sea of Okhotsk
Data from: Persistence at the final stage of volcanic island ontogeny: abiotic predictors explain native plant species richness on 111 remote Pacific atolls
Aim: The final island ontogeny of the General Dynamic Model (GDM) (i.e. before island submergence) in tropical oceans corresponds to the coral atoll stage. Here, we examined whether the species richness of native vascular plants (indigenous and endemic species) on atolls is controlled by spatial and/or physical processes. We also predicted that atolls strongly affected by anthropogenic disturbance would have lower native species richness than predicted by spatial and physical processes. Location: Marshall Islands, Kiribati Islands, Nauru, Niue, Johnston, Cook Islands, French Polynesia and Pitcairn Islands (Pacific Ocean). Taxon: Native vascular plants Methods: We used stepwise regression to test the relative influence of five biogeographic variables on native species richness. Relationships were assessed for the full set of 111 Pacific coral atolls, as well as for atoll subsets ranging from 9 to 45 atolls. An index of human impact was then estimated, and residuals in the regression model predicting species richness from biogeographic variables were compared with the level of human impact. Results: A regression model including atoll area, highest atoll elevation, the stepping stone distances from the nearest raised atoll and volcanic island explained native species richness on the 111 Pacific coral atolls. Regression models for different archipelagos and atoll subsets were also significant. Endemic species richness was significantly linked with highest atoll elevation and the stepping stone distances from the nearest raised atoll. Residuals in the biogeographic regression model were barely related to human impact across the 111 atolls but were significantly related to human impact in the Kiribati atolls. Main conclusions: Native species richness on atolls is mainly controlled by physical and spatial characteristics. However, anthropogenic disturbances have altered the predicted pattern of native species richness leading to a lower model fit in some atoll subsets.
Data from: Staying close to home? Genetic differentiation of rough-toothed dolphins near oceanic islands in the central Pacific Ocean
Rough-toothed dolphins have a worldwide tropical and subtropical distribution, yet little is known about the population structure and social organization of this typically open-ocean species. Although it has been assumed that pelagic dolphins range widely due to the lack of apparent barriers and unpredictable prey distribution, recent evidence suggests rough-toothed dolphins exhibit fidelity to some oceanic islands. Using the most comprehensively extensive dataset for this species to date, we assess the isolation and interchange of rough-toothed dolphins at the regional and oceanic scale within the central Pacific Ocean. Using mtDNA and microsatellite genotyping (nDNA), we analyzed samples of insular communities from the main Hawaiian (Kaua'i n = 93, O'ahu n = 9, Hawai'i n = 57), French Polynesian (n = 70) and Samoan (n = 16) archipelagos, and pelagic samples off the Northwestern Hawaiian Islands (n = 18). An overall AMOVA indicated strong genetic differentiation among islands (mtDNA FST = 0.265; p < 0.001; nDNA FST = 0.038; p < 0.001), as well as among archipelagos (mtDNA FST = 0.299; p < 0.001; nDNA FST = 0.055; p < 0.001). Shared haplotypes (n = 4) between the archipelagos may be a product of a relatively recent divergence and/or periodic exchange from poorly understood pelagic populations. Analyses using STRUCTURE and GENELAND identified four separate management units among archipelagos and within the Hawaiian Islands. These results confirm the presence of multiple insular populations within the Pacific and island-specific genetic isolation among populations attached to islands in each archipelago. Insular populations seem most prevalent where oceanographic conditions indicate high local productivity or a discontinuity with surrounding oligotrophic areas. Our findings have important implications for a little studied species that faces increasing anthropogenic threats around oceanic islands.
FIGURES 30–31. Arrenurus nausoriensis n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 30–31. Arrenurus nausoriensis n. sp., paratype female. 30 = dorsal view; 31 = ventral view. Scale lines: 200 µm.
FIGURES 2–4. Aspidiobates vanuaticus n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 2–4. Aspidiobates vanuaticus n. sp., holotype male. 2 = ventral view; 3 = genital field; 4 = dorsal view. Scale lines: 2, 4 = 200 µm, 3 = 50 µm.
FIGURES 11–15. Aspidiobates pacificus n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 11–15. Aspidiobates pacificus n. sp., holotype male. 11 = ventral view; 12 = dorsal view; 13 = palp; 14 = Ileg56; 15 = IVleg56. Scale lines: 12 = 200 µm; 11, 13–15 = 50 µm.
FIGURE 32 in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURE 32. Arrenurus kimberleyensis Smit, paratype male, detail of petiole, ventral view. Scale line = 50 µm.
FIGURES 18–20. Unionicola pacifica n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 18–20. Unionicola pacifica n. sp., holotype male. 18 = ventral view; 19 = palp; 20 = Ileg46. Scale lines: 50 µm.
FIGURES 21–22. Unionicola pacifica n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 21–22. Unionicola pacifica n.sp.; paratype females. 21 = ventral view; 22 = genital field. Scale lines = 50 µm.
FIGURES 5–7. Aspidiobates vanuaticus n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 5–7. Aspidiobates vanuaticus n. sp., holotype male. 5 = capitulum + palp; 6 = Ileg56; 7 = IVleg56. Scale lines = 50 µm.
FIGURES 8–10. Aspidiobates vanuaticus n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 8–10. Aspidiobates vanuaticus n. sp., paratype female. 8 = ventral view; 9 = genital field; 10 = dorsal view. Scaline lines: 8,10 = 200 µm, 9 = 50 µm.
FIGURES 16–17. Aspidiobates pacificus n in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURES 16–17. Aspidiobates pacificus n. sp., paratype female. 16 = ventral view; 17 = dorsal view. Scale lines: 16 = 50 µm, 17 = 200 µm.
FIGURE 8 in A new species of freshwater isopod (Sphaeromatidea: Sphaeromatidae) from an inland karstic stream on Espíritu Santo Island, Vanuatu, southwestern Pacific
FIGURE 8. Exosphaeroides quirosi sp. nov. A, male penial processes with insertion of first pleopods behind, anterior; B, male left first pleopod 1, anterior; C, detail of seta on distomedial angle of protopod; D, male left second pleopod 2, anterior; E, detail of tip of appendix masculina; F, female left second pleopod 2, posterior.
FIGURE 6 in A new species of freshwater isopod (Sphaeromatidea: Sphaeromatidae) from an inland karstic stream on Espíritu Santo Island, Vanuatu, southwestern Pacific
FIGURE 6. Exosphaeroides quirosi sp. nov., male. A, right pereopod 1; B, detail of distal portion of latter; C, left pereopod 2, anterior; D, right pereopod 3, anterior; E, right pereopod 4, posterior.
FIGURE 7 in A new species of freshwater isopod (Sphaeromatidea: Sphaeromatidae) from an inland karstic stream on Espíritu Santo Island, Vanuatu, southwestern Pacific
FIGURE 7. Exosphaeroides quirosi sp. nov., male. A, right pereopod 5, posterior; B, left pereopod 6, anterior; C, detail of distal portion of latter; D, right pereopod 7, posterior.
FIGURE 5 in A new species of freshwater isopod (Sphaeromatidea: Sphaeromatidae) from an inland karstic stream on Espíritu Santo Island, Vanuatu, southwestern Pacific
FIGURE 5. Exosphaeroides quirosi sp. nov., male. A, left maxillule, posterior (ornamentation of innermost three pappose distal robust setae of medial lobe omitted); B, right maxilliped, posterior (ornamentation of distal portion of endite and of corresponding robust setae omitted); C, detail of distal portion of endite of latter, with ornamentation of subdistal robust setae omitted; D, same, now showing ornamentation of subdistal robust setae.
FIGURE 1 in A new species of freshwater isopod (Sphaeromatidea: Sphaeromatidae) from an inland karstic stream on Espíritu Santo Island, Vanuatu, southwestern Pacific
FIGURE 1. Location of Fapon cave on Santo Island (Vanuatu), type locality of Exosphaeroides quirosi sp. nov.
FIGURE 2 in A new species of freshwater isopod (Sphaeromatidea: Sphaeromatidae) from an inland karstic stream on Espíritu Santo Island, Vanuatu, southwestern Pacific
FIGURE 2. Exosphaeroides quirosi sp. nov. A, male habitus, lateral; B, left antennule, dorsal; C, detail of process on distal segment of peduncle of latter, dorsal; D, left antennary peduncle, dorsal; E, detail of spinules covering medial surface of proximal segment of latter; F, antennary flagellum, dorsal.
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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.