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1,337 results for “antarctica”
Figure 9 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 9. Campylaspis edenensis sp. nov. male allotype: a, body, lateral view; b, carapace, dorsal view; c, pleonite 6 and left uropod. Scale (in mm): a, b, 1; c, 0.25.
Figure 8 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 8. Campylaspis edenensis sp. nov. female paratype: a, pereopod 1; b, pereopod 2; c, pereopod 3; d, pereopod 4; e, pereopod 5; f, pleonite 6 and left uropod. Scale (in mm): a–f, 0.5.
Figure 5 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 5. Campylaspis australiensis sp. nov. female holotype: a, body, lateral view; b, body, dorsal view; c, antenna 1; d, maxilliped 2; e, maxilliped 3; f, pereopod 1. Scale (in mm): a, b, 1; c, e, f, 0.25; d, 0.2.
Figure 6 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 6. Campylaspis australiensis sp. nov. female holotype: a, pereopod 2; b, pereopod 3; c, pereopod 4; d, pereopod 5; e, pleonite 6 and left uropod; f, pleonite 6 and right uropod of other specimen. Scale (in mm): a–f, 0.5.
Figure 2 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 2. Campylaspis anae sp. nov. female holotype: a, pereopod 1; b, pereopod 2; c, pereopod 3; d, pereopod 4; e, pereopod 5; f, pleonite 6 and left uropod. Scale (in mm): a–f, 0.25.
Retrotransposon-based genetic diversity of Deschampsia antarctica Desv. from King George Island (Maritime Antarctic)
<p><span><i>Deschampsia antarctica</i> Desv. can be found in diverse Antarctic habitats which may vary considerably in terms of environmental conditions and soil properties. As a result, the species is characterized by wide ecotypic variation in terms of both morphological and anatomical traits. The species is a unique example of an organism that can successfully colonize inhospitable regions due to its phenomenal ability to adapt to both the local mosaic of microhabitats and to general climatic fluctuations. For this reason, <i>D. antarctica </i>has been widely investigated in studies analyzing morphophysiological and biochemical responses to various abiotic stresses (frost, drought, salinity, increased UV radiation). However, there is little evidence to indicate whether the observed polymorphism is accompanied by the corresponding genetic variation.</span></p> <p>In the present study, retrotransposon-based iPBS markers were used to trace the genetic variation of <i>D. antarctica</i> collected in nine sites of the Arctowski oasis on King George Island (Western Antarctic). The genotyping of 165 individuals from nine populations with seven iPBS primers revealed 125 amplification products, 15 of which (12%) were polymorphic, with an average of 5.6% polymorphic fragments per population. Only one of the polymorphic fragments, observed in population 6, was represented as a private band. The analyzed specimens were characterized by low genetic diversity (uH<sub>e</sub> = 0.021, I = 0.030) and high population differentiation (<i>F<sub>ST</sub></i> = 0.4874). An analysis of Fu's <i>F<sub>S</sub></i> statistics and mismatch distribution in most populations (excluding population 2, 6 and 9) revealed demographic/spatial expansion, whereas significant traces of reduction in effective population size were found in three populations (1, 3 and 5). The iPBS markers revealed genetic polymorphism of <i>D. antarctica</i>, which could be attributed to the mobilization of random transposable elements, unique features of reproductive biology, and/or geographic location of the examined populations.</p>
Fig. 1 in Oncholaimus langhovdensis sp. nov. (Nematoda: Enoplea: Oncholaimida), a New Species of Free-living Marine Nematode from Langhovde, Dronning Maud Land, East Antarctica
Fig. 1. Oncholaimus langhovdensis sp. nov. Males ICHUM 5311 (holotype; A, C, E, F), 5312 (D), 5313 (G), 5314 (H), and a female ICHUM 5316 (B, I). A, male body; B, female body; C, head, ventral view; D, head, lateral view; E, anterior region; F, male tail, lateral view; G, male tail, lateral view; H, male tail, ventral view; I, female tail, lateral view. Abbreviations: a.t., anterior testis; e.p., excretory pore; i., intestine; n.r., nerve ring; ov., ovary; p., papilla; p.t., posterior testis; ut., uterus; v.d., vas deferens; v.g., ventral gland. Scale bars: A, B, 1 mm; C, D, 20 µm; E, 100 µm; F–I, 50 µm.
Fig. 5 in Two New Species of Free-living Marine Nematodes (Nematoda: Axonolaimidae and Tripyloididae) from the Coast of Antarctica
Fig. 5. Parabathylaimus jare sp. nov. A–C, F–J, differential interference contrast photomicrographs; D, E, SEM images. A, inner view of head (holotype); B, inner view of head with male anterior sensilla (ICHUM 5377); C, male anterior sensilla and amphid (ICHUM 5376); D, outer labial and cephalic sensilla (non-type male); E, amphidial aperture and cuticular ring (non-type male); F, spicule and gubernaculum (holotype); G, distal tooth-like structures of gubernaculum (white arrowheads) (holotype); H, sperms in seminal vesicle (holotype); I, J, female outer labial sensilla (black arrowheads) and cephalic sensilla (white arrowheads) (ICHUM 5493). Scale bars: A–D, F–J, 10 µm; E, 5 µm.
Fig. 3 in Two New Species of Free-living Marine Nematodes (Nematoda: Axonolaimidae and Tripyloididae) from the Coast of Antarctica
Fig. 3. Odontophora odontophoroides sp. nov. A, female body (ICHUM 5490); B, female head with open mouth (ICHUM 5490); C, female posterior region (ICHUM 5490); D, vaginal region (ICHUM 5490). Scale bars: A, 500 µm; B, 20 µm; C, D, 100 µm.
FIG. 6. — Microxina lanceolata n in Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica)
FIG. 6. — Microxina lanceolata n. sp.; A, paratype; B, C, ectosomal oxeas which form tufts supporting the pore sieve membrane (arrow); D, areolate surface showing the inhalant sieves supported by the oxeas; E, oscule; F, choanosomal skeleton; G, lanceolate extremity of an oxea; H, sigma. Scale bars: A, 1 cm; B, 50 µm; C, 20 µm; D, E, 1.5 mm; F, 400 µm; G, H, 10 µm.
FIG. 1 in Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica)
FIG. 1. — Map of Terra Nova Bay (Ross Sea), with the location of the Italian Research Station (arrow) and of the sampling stations.
FIG. 9. — Microxina sarai n in Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica)
FIG. 9. — Microxina sarai n. sp.; A, oxeas; B, small sigmas; C, big, open sigmas; D, microxeas. Scale bars: A, 100 µm; B-D, 50 µm.
FIGURE 9 in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 9. Asajirus indicus.
FIGURE 2 in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 2. Protoholozoa pedunculata.
GPR dataset Boulder Clay Antarctica
<p>A complete GPR dataset collected on the Boulder Clay Glacier (Antactica) is provided.</p> <p>Data are in SEG-Y format and geographic coordinates are also in the dataset.</p> <p>Please refer to the readme files for further information.</p>
• Cosmopolitan, all regions except Antarctica and many oceanic islands. in Canidae
• Cosmopolitan, all regions except Antarctica and many oceanic islands.
• Worldwide, except Antarctica. in Vespertilionidae
• Worldwide, except Antarctica.
• Worldwide, except Antarctica. in Muridae
• Worldwide, except Antarctica.
FIGURE 1 in New genus and species of black coral from the SW Pacific and Antarctica (Cnidaria: Anthozoa: Antipatharia: Schizopathidae)
FIGURE 1. Distribution of the three described species.
FIG. 4 in Redescription and phylogenetic assessment of Helicometra antarcticae Holloway & Bier, 1968 (Trematoda, Opecoelidae), with evidence of non-monophyletic status of the genus Helicometra Odhner, 1902
FIG. 4. — Phylogenetic relationships of helicometrine species based on dataset of 28S rRNA gene sequences. The bootstrap (≥ 50) and posterior probability (≥ 0.90) values are given near the nodes for ML and BI analyses, respectively. Newly obtained sequences are underlined.
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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.