Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
18
datasets available to search
ShareScore release 0.9.0
Dataset results
18 results for “Notothenioidei”
F I G U R E 3 in Larval stages of the Antarctic dragonfish Akarotaxis nudiceps (Waite, 1916), with comments on the larvae of the morphologically similar species Prionodraco evansii Regan 1914 (Notothenioidei: Bathydraconidae)
F I G U R E 3 Comparison of (a) left lateral view and (b) dorsal view of lower tail of Akarotaxis nudiceps [VIMS 22788a, 22.7 mm total length ðLT)] to (c) left lateral view and (d) dorsal view of lower tail of Prionodraco evansii (VIMS 43603, 19.4 mm LT). Anterior faces left in both (b) and (d)
F I G U R E 4 in Larval stages of the Antarctic dragonfish Akarotaxis nudiceps (Waite, 1916), with comments on the larvae of the morphologically similar species Prionodraco evansii Regan 1914 (Notothenioidei: Bathydraconidae)
F I G U R E 4 Comparison of (a) Akarotaxis nudiceps [VIMS 22788a, 22.7 mm total length ðLT)] and (b) Prionodraco evansii (VIMS 43603, 19.4 mm LT). Dorsal view
F I G U R E 1 in Larval stages of the Antarctic dragonfish Akarotaxis nudiceps (Waite, 1916), with comments on the larvae of the morphologically similar species Prionodraco evansii Regan 1914 (Notothenioidei: Bathydraconidae)
F I G U R E 1 Map of a portion of the western Antarctic Peninsula showing the capture sites of the 14 larval specimens of Akarotaxis nudiceps examined herein with depth contours in meters. The inset shows Antarctica with the grey box indicating the map region. The specimens were collected by the Palmer Antarctica Long-Term Ecological Research (Palmer LTER) programme during austral summer (January–February). The corresponding VIMS catalogue numbers to each of the shortened labels are given in Table 1
F I G U R E 2 in Larval stages of the Antarctic dragonfish Akarotaxis nudiceps (Waite, 1916), with comments on the larvae of the morphologically similar species Prionodraco evansii Regan 1914 (Notothenioidei: Bathydraconidae)
F I G U R E 2 Development of Akarotaxis nudiceps in left lateral view. (a) VIMS 43571, 10.8 mm total length (LT), preflexion. (b) VIMS 41368, 14.9 mm LT, postflexion. (c) VIMS 22690, 19.7 mm LT, postflexion. (d) VIMS 22788a, 22.7 mm LT, postflexion
Figure 1 in Some histological data on bone and teeth in the grey notothen (Lepidonotothen squamifrons) and in the mackerel icefish (Champsocephalus gunnari) (Notothenioidei; Perciformes; Teleostei)
Figure 1. – Lepidonotothen squamifrons (227 mm SL). Cross section of the dental (APS-Groat-PIC). A: Bony tissue is deprived of osteocytes. Arrows point to vascular cavities. B: Detail of an erosive cavity showing active osteoclasts (arrowheads). The arrows point to osteoblastic canaliculi. C: Champsocephalus gunnari (150 mm SL) (AZAN). Bony tissue is deprived of osteocytes and osteoblastic canaliculi are seen (arrowheads). Scale bars: A = 250 μm; B, C = 25 μm.
Data for: Species identification and population genetics of the Antarctic fish genera Lepidonotothen and Nototheniops (Perciformes, Notothenioidei)
<p>Accurate species identification is essential to assess biodiversity and species richness in ecosystems threatened by rapid and recent environmental changes, such as warming in most Antarctic waters. The <em>Lepidonotothen</em> species complex comprises demersal notothenioid fishes which inhabit the shelf areas of the Antarctic Peninsula, the Scotia Arc and sub-Antarctic islands with a circum-Antarctic distribution. Species determination in this group has often been problematic. In particular, whether <em>Lepidonotothen squamifrons</em> and <em>Lepidonotothen kempi </em>are valid as separate species has been questioned. In this study, we analysed the genetic variation among four nominal southern polar species within this complex (<em>L. kempi</em>, <em>L. squamifrons</em>, <em>Nototheniops larseni</em>, <em>Nototheniops nudifrons</em>) by means of three different markers (ND2 and tRNA mitochondrial genes and a panel of 16 nuclear microsatellites). We tested whether individuals morphologically assigned to <em>L. kempi</em> showed genetic separation from <em>L. squamifrons</em>. Our analyses indicated a lack of differentiation between <em>L. kempi</em> and <em>L. squamifrons</em>. However, a genetically distinct population was found for <em>L. squamifrons</em> at the Shag Rocks islands near South Georgia. Antarctic and sub-Antarctic islands are known to be home to many cryptic species and further studies will elucidate if the genetically differentiated population we found potentially originated from this context and can be considered as an incipient species. Our analysis contributes to further characterize the species composition of the most abundant fish suborder in the Southern Ocean, which is amongst the regions most threatened by climate change.</p>
Data for: Species identification and population genetics of the Antarctic fish genera Lepidonotothen and Nototheniops (Perciformes, Notothenioidei)
Open the record for dataset details and reuse information.
FIGURE 3 in Molecular systematics and taxonomic status of three latitudinally widespread nototheniid (Perciformes: Notothenioidei) fishes from the Southern Ocean
FIGURE 3. Maximum likelihood trees resulted from (A) mtDNA dataset (ND2 and COI) and (B) S7 intron 1 of Gobionotothen species. The bootstrap support values from the parsimony analyses of this gene are displayed. The taxon names represent the specimen number and the locality name.
FIGURE 2 in Molecular systematics and taxonomic status of three latitudinally widespread nototheniid (Perciformes: Notothenioidei) fishes from the Southern Ocean
FIGURE 2. Maximum likelihood trees resulted from (A) a combined dataset of mitochondrial genes, ND2 and COI, and (B) nuclear S7 intron 1 for Lepidonotothen. The bootstrap support values from the parsimony analyses of this gene are displayed. The taxon names represent the specimen number and the locality name.
FIGURE 1 in Molecular systematics and taxonomic status of three latitudinally widespread nototheniid (Perciformes: Notothenioidei) fishes from the Southern Ocean
FIGURE 1. Sampling localities of the three study species. The full circles represent approximate collecting sites.
Data from: Phylogenetic footprints of an Antarctic radiation: the Trematominae (Notothenioidei, Teleostei)
Open the record for dataset details and reuse information.
Figure 4 from: Shandikov G, Eakin R (2013) Pogonophryne neyelovi, a new species of Antarctic short-barbeled plunderfish (Perciformes, Notothenioidei, Artedidraconidae) from the deep Ross Sea. ZooKeys 296: 59-77. https://doi.org/10.3897/zookeys.296.4295
Figure 4 - Pogonophryne neyelovi sp. n., freshly caught specimen (not preserved), 305 mm TL, 253 mm SL: a lateral view b dorsal view c ventral view d mental barbel (dorsolateral view). Scale bars 10 mm. Photo by Yu. Korzun. Scale bars 10 mm.
Figure 3 from: Shandikov G, Eakin R (2013) Pogonophryne neyelovi, a new species of Antarctic short-barbeled plunderfish (Perciformes, Notothenioidei, Artedidraconidae) from the deep Ross Sea. ZooKeys 296: 59-77. https://doi.org/10.3897/zookeys.296.4295
Figure 3 - Pogonophryne neyelovi sp. n., freshly caught female (not preserved), 350 mm TL, 294 mm SL: a lateral view b dorsal view c ventral view d mental barbel (dorsal view). Scale bars 10 mm.
Figure 5 from: Shandikov G, Eakin R (2013) Pogonophryne neyelovi, a new species of Antarctic short-barbeled plunderfish (Perciformes, Notothenioidei, Artedidraconidae) from the deep Ross Sea. ZooKeys 296: 59-77. https://doi.org/10.3897/zookeys.296.4295
Figure 5 - Four types of second dorsal fin shape in males of Pogonophryne. See text for explanations. Arrow indicates the point of primary dichotomic branching of anterior longest rays; a type 1: Pogonophryne tronio, holotype, 234 mm SL b type 2: Pogonophryne sp. 208 mm SL c type 3: Pogonophryne neyelovi sp. n., holotype d type 4: Pogonophryne barsukovi, 208 mm SL.
Figure 2 from: Shandikov G, Eakin R (2013) Pogonophryne neyelovi, a new species of Antarctic short-barbeled plunderfish (Perciformes, Notothenioidei, Artedidraconidae) from the deep Ross Sea. ZooKeys 296: 59-77. https://doi.org/10.3897/zookeys.296.4295
Figure 2 - Mental barbel in short-barbeled species of the "Pogonophryne mentella" group, dorsal view, showing processes from various regions of terminal expansion; arrow indicates upper border of terminal expansion: a Pogonophryne tronio, holotype (MKhNU R295, formalin-preserved), male, 295 mm SL b Pogonophryne neyelovi sp. n., holotype (formalin-preserved) c Pogonophryne brevibarbata, female (MKhNU R298, just caught specimen), 262 mm SL d Pogonophryne ventrimaculata, holotype ZMH 46-1985, alcohol-preserved (from Eakin 1987: fig. 4), female, 214 mm SL. Scale bar 1 mm.
Figure 1 from: Shandikov G, Eakin R (2013) Pogonophryne neyelovi, a new species of Antarctic short-barbeled plunderfish (Perciformes, Notothenioidei, Artedidraconidae) from the deep Ross Sea. ZooKeys 296: 59-77. https://doi.org/10.3897/zookeys.296.4295
Figure 1 - Pogonophryne neyelovi sp. n., holotype (MNKhNU R299), freshly caught male, 355 mm TL, 295 mm SL: a lateral view b dorsal view c ventral view d mental barbel (dorsal view): stem damaged by hook with removed flap of skin. Scale bars 10 mm.
Figure 2. – Lepidonotothen squamifrons. A in Some histological data on bone and teeth in the grey notothen (Lepidonotothen squamifrons) and in the mackerel icefish (Champsocephalus gunnari) (Notothenioidei; Perciformes; Teleostei)
Figure 2. – Lepidonotothen squamifrons. A: Cross section of the premaxilla (microradiography). B: Cross section of the dental (microradiography). C: Cross section of a dorsal spiny ray (microradiography). D: Cross section of a caudal vertebra (microradiography) showing the numerous vertebral bony arches fixed on the centrum. E: Detail of a section of a caudal vertebra (Polarized light showing the fibrous organization of bone and two vascular canals (arrowheads). F: Same section than Fig. E observed in transmitted natural light. The vascular canals are surround- ed by a reversal line (arrows). G: Detail of a section (polarized light) in a vertebral centrum showing growth marks. Scale bars: A = 500 μm; B = 250 μm; C, D, E, F = 200 μm; G = 50 μm. A: 415 mm TL; B-D, G: 333 mm TL; E, F: 250 mm TL.
Figure 3. – Lepidonotothen squamifrons. A in Some histological data on bone and teeth in the grey notothen (Lepidonotothen squamifrons) and in the mackerel icefish (Champsocephalus gunnari) (Notothenioidei; Perciformes; Teleostei)
Figure 3. – Lepidonotothen squamifrons. A: Horizontal section (microradiography) showing several cross sections of teeth on the right and the lower jaw on the left. B: Horizontal section (microradiography) taken lower than Fig. A. The wall of the pulp cavity of the central tooth (*) is crossed by vascular canals. We can see three very young non-functional teeth (arrowheads). C: Cross section of the lower jaw (microradiography) showing a young erupted tooth (arrow) and a fall- en tooth (*). D: Detail of a functional tooth showing the unmineralized ligament (arrowhead). E: Cross section of the jaw showing a tooth bud inserted in an alveola (arrow), beside a functional tooth (arrowhead). F, G: Cross section of a tooth (respectively in transmitted natural and polarized light. The more lateral dentinous tissue is striated, indi- cating the presence of odontoblastic canaliculi. (Scale bars: A, D = 250 μm; B, F, G = 150 μm; C = 500 μm; E = 1 mm. (A, B, F, G: 259 mm TL; C: 415 mm TL; D, E: 190 mm TL).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.