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976 results for “Pacific Islands”
Figs 67–73 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 67–73. Ferocia houkiana Goeyers & Van de Vijver sp. nov. SEM. Campbell Island holotype population, sample BAS284 (BR-4578). 67–68. Two external valve face views with the typical spines, the rounded to slit like areolae and the Müller step. 69. External girdle view of a valve lacking the typical central ring of spines. Note the spines vestiges that are present in the central area. 70. Internal view of an entire valve showing clearly the central rimoportulae (arrow) and the small central area. 71. Internal view of an entire valve showing clearly the submarginal rimoportulae (arrows). 72. Internal detail of the valve with one rimoportula indicated by the arrow. 73. Internal detail of the valve central area with the central rimoportula. Scale bars: 67, 69–70 = 10 μm; 68, 71 = 5 μm; 72–73 = 1 μm.
Figs 125–131 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 125–131. Arcanodiscus indistinctus Goeyers & Van de Vijver sp. nov. SEM. Campbell Island holotype population, sample BAS303 (BR-4580). 125. Frustule in girdle view with eroded girdle showing the mantle with the parallel ridges. 126. External view of a valve in girdle view showing the domed valve face, several marginal ridges and some of the narrow, unperforated copulae. 127–128. External valve face view of an entire valve. Note the large central area and the striae on the sloping margin. On Fig. 128, note the siliceous outgrowth on the valve face margin. 129. External view of a valve in girdle view showing the domed valve face, the distinct marginal ridges and the narrow mantle edge. 130–131. Internal views of an entire valve showing the lack of rimoportulae. Scale bars = 10 μm.
Figs 116–124 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 116–124. Arcanodiscus crawfordianus Goeyers & Van de Vijver sp. nov. SEM. Campbell Island holotype population, sample BAS303 (BR-4579). 116. Frustule in girdle view. The arrows indicate the fimbriate pars interior of the copulae. 117. External view of a valve in girdle view showing the domed valve face, the marginal spines and some of the narrow, unperforated copulae. 118. External valve face view of an entire valve. Note the spines, the granules in the central area and the striae on the sloping margin. 119. External view of a valve in girdle view showing the domed valve face, the marginal spines, the distinct marginal ridge and the mantle edge bordered by the relatively large groove. 120–121. Several valve face views to show the irregular rings of spines. 122. External detail of the spines and the granules. 123–124. Internal views of an entire valve showing the rimoportulae (arrows). Scale bars: 116, 118–121, 123–124 = 10 μm; 117 = 5 μm; 122 = 1 μm.
Figs 74–115. Three new Arcanodiscus species from Campbell Island. 74–80 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 74–115. Three new Arcanodiscus species from Campbell Island. 74–80. Arcanodiscus crawfordianus Goeyers & Van de Vijver sp. nov. LM. Campbell Island holotype population, sample BAS303 (BR-4579). Several valves in valve face view showing clearly the large central area, the irregularly scattered spines and the marginal striae. 81–96. Arcanodiscus indistinctus Goeyers & Van de Vijver sp. nov. LM. Campbell Island holotype population, sample BAS303 (BR-4580). 81. Frustule in girdle view showing the discoid chloroplasts. 82. Frustule in girdle view. 83–96. Several valves in valve face view. Note the thick mantle in some of the valves and the large central area. 97–115. Arcanodiscus saundersianus Goeyers & Van de Vijver sp. nov. LM. Campbell Island holotype population, sample BAS272 (BR-4581). 97–101. Several frustules in girdle view, often connected to each other. 102–115. Several valves in valve face view. Note the thick mantle in some of the valves and the relatively small central area. The marginal striae are hardly visible in LM. Scale bars = 10 μm.
Figs 37–43 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 37–43. Angusticopula cosmica Goeyers & Van de Vijver sp. nov. SEM. Campbell Island holotype population, sample BAS303 (BR-4577). 37. Frustule showing both the valve face and girdle formed by open, narrow copulae. The arrows indicate the ligulae. 38. Detail of the mantle valve with the serrated mantle edge (double arrow) and the ligulate copulae (single arrow). 39. Valve in girdle view showing the striated mantle, the narrow ridge bordering the mantle/valve face junction (black arrows) and the typical groove bordering the mantle edge (double white arrow). 40. External view of a valve face showing the dense pattern of granules. 41. External detail of the very fine striae, the small, rounded areolae and the narrow ridge bordering the valve margin. 42. Internal view of an entire valve showing the rimoportulae and the thick mantle. 43. Internal detail of the valve with some rimoportulae. Scale bars: 37–39, 42 = 10 μm; 40 = 5 μm; 41, 43 = 1 μm.
FIGURE 9 in Four new species of Careproctus (Cottoidei: Liparidae) from the deep-water vicinity of the southern Kuril Islands (Western North Pacific)
FIGURE 9. Careproctus globulus sp. nov.: A–B, holotype, ZMH 26374, juvenile 43 mm SL.
FIGURE 5 in A new species of Eunice Cuvier, 1817 (Polychaeta: Eunicidae) from the slope of the Desventuradas Islands and seamounts of the Nazca Ridge, southeastern Pacific Ocean
FIGURE 5. Paratypes (SF5 (a) and SF7 (b)) red arrows indicate peristomial cirri; c) tubes
FIGURE 3. Eunice decolorhami n in A new species of Eunice Cuvier, 1817 (Polychaeta: Eunicidae) from the slope of the Desventuradas Islands and seamounts of the Nazca Ridge, southeastern Pacific Ocean
FIGURE 3. Eunice decolorhami n. sp.: a) mandibles; b) maxilar complex (paratype SCBUCN 8674).
Data from: Stochastic faunal exchanges drive diversification in widespread Wallacean and Pacific island lizards (Squamata: Scincidae: Lamprolepis smaragdina)
Aim: Widespread species found in disturbed habitats are often expected to be human commensals. In island systems, this association predicts that dispersal will be mediated by humans. We investigated the biogeographical relationships among populations of a widespread tree skink that inhabits coastal forest and human-cultivated plantations in Southeast Asia. We sought to determine whether populations of the emerald tree skink, Lamprolepis smaragdina, dis- persed via mechanisms that were not human-mediated ('natural' dispersal) or whether dispersal was mediated by humans. The latter scenario predicts low levels of genetic differentiation across a species' range, coupled with a genetic signature of recent range expansion. Location: Southeast Asia, the Philippines, Wallacea and the south-western Pacific. Methods: We analysed sequences of mitochondrial DNA from 204 samples collected throughout the range of this species. We use phylogenetic and popu- lation genetic methods to distinguish between predicted geographical patterns of genetic variation that might indicate natural or human-mediated dispersal. Results: In contrast to predictions derived from similar studies of taxonomy and natural history, we found L. smaragdina to be characterized by highly structured and seemingly geographically stable mitochondrial gene lineages. Main conclusions: Our results demonstrate a novel pattern of widespread species distribution, never before observed in vertebrates of the Indo-Australian Archipelago. Although this widespread and highly dispersive species is capable of long-distance dispersal, and has a clear history of over-water dispersal, it exhibits sharp genetic differentiation across its range. Our results suggest that random waif dispersal has been a pervasive ongoing phenomenon throughout the evolutionary history of this species.
FIGURE 1 in Water mites from Pacific Islands (Acari: Hydrachnidia)
FIGURE 1. Oxus orientalis, Walter. Genital field, male. Scale line = 50 µm.
FIGURE 13. Typhlotanais ohtsukae n in Tanaidacea (Crustacea: Peracarida) from Japan. II. Tanaidomorpha from the East China Sea, the West Pacific Ocean and the Nansei Islands
FIGURE 13. Typhlotanais ohtsukae n. sp. A, male, lateral view, scale bar = 0.5 mm.
FIGURE 8. Typhlotanais magdalensis n in Tanaidacea (Crustacea: Peracarida) from Japan. II. Tanaidomorpha from the East China Sea, the West Pacific Ocean and the Nansei Islands
FIGURE 8. Typhlotanais magdalensis n. sp. A, holotype, female, lateral view. Scale bar = 0.5 mm.
FIGURE 5 in A new genus of oribatid mite, Spineremaeus gen. nov. and three new species of Scapheremaeus (Acari: Oribatida: Cymbaeremaeidae) from Norfolk Island, South-west Pacific, and their biogeographical affinities
FIGURE 5. Scapheremaeus tumidus sp. nov., holotype female; a) dorsal; b) ventral; c) lateral.
FIGURE 9 in A new genus of oribatid mite, Spineremaeus gen. nov. and three new species of Scapheremaeus (Acari: Oribatida: Cymbaeremaeidae) from Norfolk Island, South-west Pacific, and their biogeographical affinities
FIGURE 9. Distribution of Scapheremaeus species-groups in the South-west Pacific region.
FIGURE 7 in A new genus of oribatid mite, Spineremaeus gen. nov. and three new species of Scapheremaeus (Acari: Oribatida: Cymbaeremaeidae) from Norfolk Island, South-west Pacific, and their biogeographical affinities
FIGURE 7. Scapheremaeus pinguis sp. nov., holotype female; a) dorsal; b) ventral; c) lateral.
FIGURE 3 in A new genus of oribatid mite, Spineremaeus gen. nov. and three new species of Scapheremaeus (Acari: Oribatida: Cymbaeremaeidae) from Norfolk Island, South-west Pacific, and their biogeographical affinities
FIGURE 3. Scapheremaeus pacificus sp. nov., holotype female; a) dorsal; b) ventral; c) lateral.
FIGURES 9–10 in The first record of the genus Bryodelphax (Tardigrada: Heterotardigrada: Echiniscidae) from Easter Island, Rapa Nui (Pacific Ocean, Chile) with the description of a new species, Bryodelphax aaseae
FIGURES 9–10. Bryodelphax aaseae sp. nov. Ventral plates. (DIC, paratypes).
FIGURE 5. Styela clavata. A in Shallow-water Ascidians from Matua Island (central Kuril Islands, NW Pacific)
FIGURE 5. Styela clavata. A, distal part of gonad; B, tentacles, dorsal tubercle, ganglion.
FIGURE 9. Aplidiopsis pannosum. A in Shallow-water Ascidians from Matua Island (central Kuril Islands, NW Pacific)
FIGURE 9. Aplidiopsis pannosum. A, zooids; B, preserved colony; C, larva.
FIGURE 10. A and B in Shallow-water Ascidians from Matua Island (central Kuril Islands, NW Pacific)
FIGURE 10. A and B, Aplidium eborinum: A, zooids; B, colony. C, Aplidium sp., colony.
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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.