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272 results for “nudibranch”
FIGURE 3 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas
FIGURE 3. Adalaria ultima sp. nov. A–E. ZMMU Op-548, fixed holotype, 21 mm length, Okhotsk Sea, Sakhalinsky Gulf; A. Dorsal view; B. Ventral view; C. Buccal pump, lateral view; D. Buccal pump (dorsal view) and central nervous system; E. Dorsal view of general dissection; F, G. Paratype ZMMU Op-548, Okhotsk Sea; F. radular teeth, anterior and middle parts, SEM; G. radular teeth, close up of anterior view, SEM. Abbreviations: bp, buccal pump; cns, central nervous system; dg, digestive gland; e, eye; fgm, female gland mass; h, heart; oe, oesophagus; ph, pharynx; pm, peripheral muscle; psh, penial sheath; rh, rhinophore; rsh, radular sheath; sg, salivary gland. Scale bars: A–E—1 mm; F, G—100 µm. Photos: Tatiana Korshunova, Alexander Martynov.
FIGURE 2 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas
FIGURE 2. Adalaria rossica sp. nov. A. ZMMU Op-551, fixed holotype, 19.5 mm length, Franz Josef Land: dorsal, ventral and details of dorsal tubercles respectively; B. Living specimen (not collected), Franz Josef Land; C–H. Paratype ZMMU Op- 549; C. Buccal pump, lateral view; D. Buccal pump (dorsal view) and central nervous system; E. Dorsal view of general dissection; F. Labial cuticle (smooth), SEM; G. radular teeth, anterior and middle parts, SEM; H. radular teeth, close up of anterior view, SEM. Abbreviations: a, ampulla; bp, buccal pump; cns, central nervous system; dg, digestive gland; e, eye; fgm, female gland mass; h, heart; is, intestine; oe, oesophagus; ph, pharynx; pm, peripheral muscle; psh, penial sheath; rh, rhinophore; rsh, radular sheath; sg, salivary gland. Scale bars: A, C–E—1 mm; F—30 µm; G, H—100 µm. Photos: (A, C–H) Tatiana Korshunova, Alexander Martynov, (B) Oleg Savinkin.
FIGURE 1 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas
FIGURE 1. Map of the north-eastern part of the northern hemisphere showing localities of Adalaria rossica sp. nov. (square) near the North Pole, Adalaria ultima sp. nov. (circles) in the Sea of Japan and Okhotsk Sea, and Onchidoris expectata sp. nov. (triangles) at Kamchatka and Middle Kurile Matua island.
FIGURE 6 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas
FIGURE 6. Haplotype networks based on molecular data COI showing genetic changes occurring within Adalaria (A) and Onchidoris (B) species.
Figure 2 in Here be dragons - phylogeography of Pteraeolidia ianthina (Angas, 1864) reveals multiple species of photosynthetic nudibranchs (Aeolidina: Nudibranchia)
Figure 2. Maximum-likelihood topology of Pteraeolidia phylogeny based on combined COI and 16S data sets. Maximumparsimony support also shown. Black bars indicate results of species delimitation analyses on COI data set; ABGD (A) and statistical parsimony (T). Within those bars, missing data is shown with textured grey.
Figure 3 in Here be dragons - phylogeography of Pteraeolidia ianthina (Angas, 1864) reveals multiple species of photosynthetic nudibranchs (Aeolidina: Nudibranchia)
Figure 3. Comparison of live images of tropical clade Pteraeolidia 'semperi' (A–C) and P. ianthina (D–H). A, Adult tropical Pteraeolidia, AMS C.153588, Darwin. B, Markings of lateral sides, tropical Pteraeolidia, AMS C.126088, Lizard Is. C, Three bands on oral tentacles of tropical Pteraeolidia, AMS C.153588, Darwin. D, Egg masses of P. ianthina, AMS C.155772, Solitary Is., Coffs Harbour. E, Adult P. ianthina, AMS C.124698, Port Stephens. F, No markings present on lateral sides of P. ianthina, AM C.133292, North Bondi, Sydney. G, Two bands on oral tentacles of P. ianthina, AMS C.149567, Eden. H, Juvenile P. ianthina, AM C.149567, Eden. Scale bar is 10 mm in all cases except G (5 mm), and B and H (2.5 mm). All photographs are by Bill Rudman, except B by John Fields, and E by Heather McLennan.
Figure 1 in Here be dragons - phylogeography of Pteraeolidia ianthina (Angas, 1864) reveals multiple species of photosynthetic nudibranchs (Aeolidina: Nudibranchia)
Figure 1. Distribution of samples sequenced in this study. Blue indicates samples determined to be Pteraeolidia ianthina, green represents P. 'semperi'. Size of circle indicates numbers of specimens, see Table 1 for exact numbers.
Figure 5 in Here be dragons - phylogeography of Pteraeolidia ianthina (Angas, 1864) reveals multiple species of photosynthetic nudibranchs (Aeolidina: Nudibranchia)
Figure 5. Scanning electron microscopy of Pteraeolidia radulae. A,C,E. Lateral view P. 'semperi' (respectively Sulawesi I, AMS C.474017; Maui E, AMS C.474049; Heron B, AMS C.474026). B,D,F. P. ianthina (respectively Port Stephens H, AMS C.474043; Sydney E, AMS C.474032; Eden, AM S.474044). Scale bar represents 20 μm for all except B, where it is 10 μm.
Figure 6 in Here be dragons - phylogeography of Pteraeolidia ianthina (Angas, 1864) reveals multiple species of photosynthetic nudibranchs (Aeolidina: Nudibranchia)
Figure 6. Extent of known distribution of Pteraeolidia ianthina. Yellow circles indicate sequenced specimens, orange circle indicates photographic record. Museum records inside these northern and southern boundaries not shown.
Figure 4 in Here be dragons - phylogeography of Pteraeolidia ianthina (Angas, 1864) reveals multiple species of photosynthetic nudibranchs (Aeolidina: Nudibranchia)
Figure 4. Scanning electron microscopy of Pteraeolidia radulae. A,C, E. Dorsal view P. 'semperi' (respectively Sulawesi I, AMS C.474017; Maui E, AMS C.474049; Heron B, AMS C.474026). B,D,F. Dorsal view P. ianthina (respectively Port Stephens H, AMS C.474043; Sydney E, AMS C.474032; Eden, AMS C.474044). Scale bar represents 10 μm for all, except D and E, where it is 20 μm.
Validating a molecular clock for nudibranchs: No fossils to the rescue
<p>Time-calibrated phylogenies are typically reconstructed with fossil information but for soft-bodied marine invertebrates that lack hard parts, a fossil record is lacking. In these cases, biogeographic calibrations or rates of divergence for related taxa are often used. Although nudibranch phylogenies have advanced with the input of molecular data, no study has derived a divergence rate for this diverse group of invertebrates. Here, we use an updated closure date for the Isthmus of Panama (2.8 ma) to derive the first divergence rates for chromodorid nudibranchs using multi-gene data from a geminate pair with broad phylogeographic sampling. Examining the species <em>Chromolaichma sedna </em>(Marcus & Marcus, 1967), we uncover deep divergences among eastern Pacific and western Atlantic clades and we erect a new species designation for the latter (<em>Chromolaichma hemera</em> sp. nov.). Next, we discover extensive phylogeographic structure within <em>C. hemera</em> sp. nov. <em>sensu lato</em>, thereby refuting the hypothesis of a recent introduction. Lastly, we derive divergence rates for mitochondrial and nuclear loci that exceed known rates for other gastropods and we highlight significant rate heterogeneity both among markers and taxa. Together, these findings improve understanding of nudibranch systematics and provide rates useful to apply to divergence scenarios in this diverse group.</p>
Division of labor for defensive retaliation and preemption by the peripheral and central nervous systems in the nudibranch Berghia stephanieae
<p>Contained in this depository are the kinematic data, associated analyses, and original MATLAB code accompanying the paper "Division of labor for defensive retaliation and preemption by the peripheral and central nervous systems in the nudibranch <em>Berghia stephanieae.</em>" </p>
Marine heatwaves and bleaching impact on a photosynthetic symbiont-bearing nudibranch (Dataset)
Open the record for dataset details and reuse information.
Figure 15 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 15. SEM micrographs of radula in Coryphella nobilis and Coryphella sanamyanae (former Borealea). A, Coryphella nobilis, ZMMU WS14379, posterior radular portion. B, Coryphella nobilis, MIMB40023, middle radular portion. C, Coryphella nobilis, ZMMU WS14384, middle radular portion. D, Coryphella nobilis, ZMMU WS14933, middle radular portion. E, Coryphella sanamyanae, ZMMU WS14417, middle radular portion. F, Coryphella sanamyanae, ZMMU WS14955, middle radular portion. G, Coryphella sanamyanae, ZMMU WS14416, middle radular portion. Scale bars: A–D, F = 30 µm; E, G = 10 µm.
Figure 16 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 16. SEM micrographs of jaws in Coryphella nobilis and Coryphella sanamyanae (former Borealea). A, Coryphella nobilis, ZMMU WS14379, masticatory process of jaws. B, Coryphella nobilis, ZMMU WS14379, details of denticulation on masticatory process of jaws. C, Coryphella sanamyanae, ZMMU WS14416, masticatory process of jaws. D, Coryphella sanamyanae, ZMMU WS14416, details of denticulation on masticatory process of jaws. Scale bars: A, D = 30 µm; B = 10 µm; C = 100 µm.
Figure 14 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 14. Living specimens of the species Coryphella sanamyanae (former Borealea sanamyanae). A, ZMMU WS14987, 46 mm in length alive. B, ZMMU WS14956, 16 mm in length alive. C, voucher not specified, 27 mm in length alive. D, ZMMU WS14973, 15 mm in length alive. E, ZMMU WS14433, 22 mm in length alive. F, ZMMU WS14416, 19 mm in length preserved. G, voucher not specified, 27 mm in length alive. H, ZMMU WS14417, 24 mm in length alive. I, ZMMU WS14955, 26 mm in length alive.
Figure 11 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 11. SEM micrographs of radula in Coryphella gracilis and Coryphella amabilis (former Microchlamylla). A, Coryphella gracilis, ZMMU WS14915, middle radular portion. B, Coryphella gracilis, ZMMU WS14914, middle radular portion. C, Coryphella gracilis, ZMMU WS14922, middle radular portion. D, Coryphella amabilis, ZMMU WS14966, middle radular portion. E, Coryphella amabilis, ZMMU WS14960, middle radular portion. F, Coryphella amabilis, ZMMU WS14418, middle radular portion. G, Coryphella amabilis, ZMMU WS14395, middle radular portion. Scale bars: A–E, G = 30 µm; F = 10 µm.
Figure 12 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 12. SEM micrographs of jaws in Coryphella gracilis and Coryphella amabilis (former Microchlamylla). A, Coryphella gracilis, right jaw plate, ZMMU WS14915. B, Coryphella gracilis, details of denticulation on masticatory process, ZMMU WS14915. C, Coryphella amabilis, ZMMU WS14960, left jaw plate. D, Coryphella amabilis, ZMMU WS14960, details of denticulation on masticatory process. E, Coryphella amabilis, ZMMU WS14966, right jaw plate. F, Coryphella amabilis, ZMMU WS14966, details of denticulation on masticatory process. Scale bars: A, C, E = 100 µm, B, F = 30 µm, D = 10 µm.
Figure 13 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 13. Living specimens of the species Coryphella nobilis (former Borealea nobilis). A, voucher not specified, 38 mm in length alive. B, ZMMU WS14443, 26 mm in length preserved. C, juvenile, WS14379, 9 mm in length preserved. D, juvenile, ZMMU WS14934, 13 mm in length alive. E, subadult, ZMMU WS14935, 19 mm in length alive. F, MIMB40022, 19 mm in length preserved. Photo credits: A, C, Sergey Gorin; B, Tatiana Antokhina; D, E, Irina Ekimova; F, Anastassya Mayorova.
Figure 10 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 10. Living specimens of Coryphella amabilis (former Microchlamylla amabilis). A, ZMMU WS14990, c. 18 mm in length. B, ZMMU WS14960, c. 15 mm in length. C, ZMMU WS14961, c. 14 mm in length. D, ZMMU WS14957, c. 16 mm in length. E, ZMMU WS14997, c. 7 mm in length. F, ZMMU WS14993, c. 10 mm in length. G, subadult specimen, Sea of Japan, voucher was not specified. H, ZMMU WS14996, c. 15 mm in length. I, juvenile specimen, Sea of Japan, voucher was not specified. Photo credits: A–F, H, Tatiana Antokhina; G, I, Anton Chichvarkhin.
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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)
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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.