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422 results for “species rediscovery”
Data from: The rediscovery of a long described species reveals additional complexity in speciation patterns of poeciliid fishes in sulfide springs
The process of ecological speciation drives the evolution of locally adapted and reproductively isolated populations in response to divergent natural selection. In Southern Mexico, several lineages of the freshwater fish species of the genus Poecilia have independently colonized toxic, hydrogen sulfide-rich springs. Even though ecological speciation processes are increasingly well understood in this system, aligning the taxonomy of these fish with evolutionary processes has lagged behind. While some sulfide spring populations are classified as ecotypes of Poecilia mexicana, others, like P. sulphuraria, have been described as highly endemic species. Our study particularly focused on elucidating the taxonomy of the long described sulfide spring endemic, Poecilia thermalis Steindachner 1863, and investigates if similar evolutionary patterns of phenotypic trait divergence and reproductive isolation are present as observed in other sulfidic species of Poecilia. We applied a geometric morphometric approach to assess body shape similarity to other sulfidic and non-sulfidic fish of the genus Poecilia. We also conducted phylogenetic and population genetic analyses to establish the phylogenetic relationships of P. thermalis and used a population genetic approach to determine levels of gene flow among Poecilia from sulfidic and non-sulfidic sites. Our results indicate that P. thermalis' body shape has evolved in convergence with other sulfide spring populations in the genus. Phylogenetic analyses placed P. thermalis as most closely related to one population of P. sulphuraria, and population genetic analyses demonstrated that P. thermalis is genetically isolated from both P. mexicana ecotypes and P. sulphuraria. Based on these findings, we make taxonomic recommendations for P. thermalis. Overall, our study verifies the role of hydrogen sulfide as a main factor shaping convergent, phenotypic evolution and the emergence of reproductive isolation between Poecilia populations residing in adjacent sulfidic and non-sulfidic environments.
FIGURE 4 in Rediscovery of the enigmatic blind snake genus Xenotyphlops in northern Madagascar, with description of a new species (Serpentes: Typhlopidae)
FIGURE 4. The female (MRSN R3208) photographed in life at Ambodivahibe, northern Madagascar (by V. Mercurio).
FIGURE 3 in Rediscovery of the enigmatic blind snake genus Xenotyphlops in northern Madagascar, with description of a new species (Serpentes: Typhlopidae)
FIGURE 3. Ventrolateral view of head of the holotype (MRSN R3208) of Xenotyphlops mocquardi showing enlarged supralabial III, minute infranasal, and projecting mental with corresponding rostral notch.
FIGURE 2 in Rediscovery of the enigmatic blind snake genus Xenotyphlops in northern Madagascar, with description of a new species (Serpentes: Typhlopidae)
FIGURE 2. Dorsal view of head of the holotype (MRSN R3208) of Xenotyphlops mocquardi, with extremely large rostral, nearly as broad as the head.
FIGURE 1 in Rediscovery of the enigmatic blind snake genus Xenotyphlops in northern Madagascar, with description of a new species (Serpentes: Typhlopidae)
FIGURE 1. Lateral view of head of the holotype (MRSN R3208) of Xenotyphlops mocquardi, showing unique profile with verticallyoriented rostral.
FIGURE 7 in Rediscovery of Bathypsammis Huys & Gee, 1993 (Copepoda, Harpacticoida, Pseudotachidiidae) with description of a new species from the Antarctic deep sea
FIGURE 7. Bathypsammis polaris sp. n., female, holotype (UNIOL 2006.008): A, female P5; B, female urosome and genital field; C, furcal setae IV and V. Scale bars, a=50 µm; b–c=100 µm
FIGURE 2 in Rediscovery of Bathypsammis Huys & Gee, 1993 (Copepoda, Harpacticoida, Pseudotachidiidae) with description of a new species from the Antarctic deep sea
FIGURE 2. Bathypsammis polaris sp. n., female, holotype (UNIOL 2006.008): A, mandible gnathobase; B, mandible basis with exo- and endopod; C: P1. Scale bars=50 µm.
FIGURE 9 in Rediscovery of Bathypsammis Huys & Gee, 1993 (Copepoda, Harpacticoida, Pseudotachidiidae) with description of a new species from the Antarctic deep sea
FIGURE 9. Bathypsammis polaris sp. n., female, holotype (UNIOL 2006.008): A, female A2 exp; B, female A2; C, female A2 enp, subapical setation; D, segmentation of female A1. Scale bars=30 µm.
FIGURE 1 in Rediscovery of Bathypsammis Huys & Gee, 1993 (Copepoda, Harpacticoida, Pseudotachidiidae) with description of a new species from the Antarctic deep sea
FIGURE 1. Bathypsammis polaris sp. n., female, holotype (UNIOL 2006.008): A, habitus, dorsal; B, female genital field and P6. Scale bars, a=100 µm, b=30 µm.
FIGURE 3 in Rediscovery of Bathypsammis Huys & Gee, 1993 (Copepoda, Harpacticoida, Pseudotachidiidae) with description of a new species from the Antarctic deep sea
FIGURE 3. Bathypsammis polaris sp. n., female, holotype (UNIOL 2006.008): A, maxillule; B, maxilla; C, maxilliped. Scale bars=50 µm.
FIGURE 8 in Rediscovery of Bathypsammis Huys & Gee, 1993 (Copepoda, Harpacticoida, Pseudotachidiidae) with description of a new species from the Antarctic deep sea
FIGURE 8. Bathypsammis polaris sp. n., female, holotype (UNIOL 2006.008): A, antennule, armature of antennular segments I–IV. Scale bar=30 µm
FIGURE 2 in Rediscovery of a long known species, Ixalus lateralis Anderson, 1871
FIGURE 2. Morphometrical differentiation of adult males of Leptolalax lateralis, L. pelodytoides and Xenophrys major. Left: boxplot of relative head length (HL/SVL); right: boxplot of relative head width (HW/SVL).
FIGURE 1 in Rediscovery of a long known species, Ixalus lateralis Anderson, 1871
FIGURE 1. Leptolalax lateralis (Anderson, 1871). Neotype IASST N68, adult male, SVL 28 mm. Dorsal, ventral and lateral view. Photo N. Humtsoe.
FIGURE 9 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 9. Lateral view of braincase and an enlargement of the auditory bullae region of three species of Rhipidomys: (A–B) Rhipidomys gardneri (MUSM 14472), (C–D) R. leucodactylus (MUSM 12987), and (E–F) R. ochrogaster (MUSM 35095). Scale is 10 mm. pop= paraoccipital process, pb=processus brevis of incus, oa=orbicular apophysis.
FIGURE 6 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 6. Dorsal and ventral view of the skull of three species of Rhipidomys: (A) R. gardneri (MUSM 14472), (B) R. leucodactylus (MUSM 12987), and (C) R. ochrogaster (MUSM 35095). Scale is 10 mm.
FIGURE 7 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 7. Lateral view of the skull and mandible of three species of Rhipidomys: (A) R. gardneri (MUSM 14472), (B) R. leucodactylus (MUSM 12987), and (C) R. ochrogaster (MUSM 35095). Scale is 10 mm.
FIGURE 8 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 8. Occlusal view of upper and lower molar rows of three species of Rhipidomys: (A–D) R. gardneri (MUSM 14472), (B–E) R. leucodactylus (MUSM 12987), and (C–F) R. ochrogaster (MUSM 35095). Scale is 1 mm.
FIGURE 3 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 3. Hind feet and tail of Rhipidomys ochrogaster (MUSM 35095): (A) dorsal view of left foot, (B) ventral view of left foot, and (C) terminal part of the tail showing a well developed pencil. Scale is 10 mm.
FIGURE 2 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 2. External appearance of Rhipidomys ochrogaster (MUSM 35095): (A) lateral view, (B) dorsal view, and (C) ventral view. Scale is 20 mm.
FIGURE 10 in Rediscovery of Rhipidomys ochrogaster J. A. Allen, 1901 (Cricetidae: Sigmodontinae) with a redescription of the species
FIGURE 10. Mountain forest habitat near Yanacocha town where Rhipidomys ochrogaster was collected in our study. Photograph by M. Peralta.
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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.