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90 results for “Homalopsidae”
FIGURE 1. Dieurostus dussumierii a in On further specimens of Dussumier's Mud Snake Dieurostus dussumierii (Duméril, Bibron & Duméril, 1854) with notes on its taxonomy, type material, and natural history (Reptilia: Serpentes: Homalopsidae)
FIGURE 1. Dieurostus dussumierii a syntype MNHN-RA-0.3751 (a) lateral, (b) dorsal and (c) ventral head profiles, (d) dorsal and (e) ventral entire body views. Photo courtesy MNHN; (f) modified reproduction of drawing from Duméril et al. (1854) showing entire ventrolateral view, head dorsal scalation and (inset) disarticulated skull and jaws.
FIGURE 2 in On further specimens of Dussumier's Mud Snake Dieurostus dussumierii (Duméril, Bibron & Duméril, 1854) with notes on its taxonomy, type material, and natural history (Reptilia: Serpentes: Homalopsidae)
FIGURE 2. Dieurostus dussumierii CES/S-529–32 (a) dorsal views, (b) CES/S-530 dorsal entire view, (c) dorsal and (d) ventral views of CES/S-523–25 young ones, (e) CES/S-527 and (f) CES/S-528 showing two preoculars.
FIG. 4 in Undescribed Diversity in a Widespread, Common Group of Asian Mud Snakes (Serpentes: Homalopsidae: Hypsiscopus)
FIG. 4. Populations of Hypsiscopus murphyi in Indochina with sampling localities (points). Mitochondrial phylogenetic tree shown on right; filled node circles represent strong support; number of individuals for the respective clade are given to the left of the tree. Inset plot shows results of the Mantel test (IBD scenario); histogram on top shows the original values of the observed data (diamond) outside of the gray bars that represent the absence of spatial structure. Major lakes and rivers/tributaries (blue) are labeled on map. Light and dark gray areas on map depict higher and lower elevation, respectively. See Data Accessibility for tree file.
FIG. 3 in Undescribed Diversity in a Widespread, Common Group of Asian Mud Snakes (Serpentes: Homalopsidae: Hypsiscopus)
FIG. 3. Morphological characters and variation of Hypsiscopus murphyi. (A–D) Holotype of H. murphyi (NCSM 85490) in preservative showing dorsal (A), ventral (B), and right lateral head (C) views, and hemipenes (D). Black scale bars represent 1 cm in panels A and B, and 2 mm in panels C and D. (E) Close-up of rear-fang of H. murphyi (AMNH R-33908). (F) Variation in melanin pigmentation of the infralabials and anterior chin shields: slightly pigmented (left; NCSM 85490) and heavily pigmented (right; ROM 32374). (G) Left two images, variation in dorsal-to-ventral color patten change: sharp (NCSM 85490) and gradual (ROM 30818). Right two images, variation in ventral color pattern: immaculate (NCSM 85490) and mid-ventral halfmoons (ROM 30818). (H) Variation in extent of mid-ventral caudal stripe, with stripe beginning on second subcaudal pair (AMNH R-33908) rather than the 13th subcaudal pair in the holotype (NCSM 85490; panel B).
FIG. 2 in Undescribed Diversity in a Widespread, Common Group of Asian Mud Snakes (Serpentes: Homalopsidae: Hypsiscopus)
FIG. 2. Phylogeny and quantitative statistics of Hypsiscopus. (A) Principal coordinates analysis of H. murphyi (blue) and H. plumbea (green); nonstandardized (left) and standardized (right) runs are shown. Both X- and Y-axes represent PC1 and PC2, respectively. (B) Isolation by distance (IBD) plot showing specimen points for H. murphyi and H. plumbea in separate plots, which comprise the gray points in the larger chart. The blue-green points at the top of the larger chart represent interspecific comparisons of H. murphyi and H. plumbea. (C) Concatenated (phased nuclearþmitochondrial) phylogeny of all specimens of Hypsiscopus used in this study. Circles at nodes represent support values: left side ¼ SHalrt, right side ¼ UF bootstraps. Black halves of a circle indicate high support for the respective support value at that node. See Data Accessibility for tree file. Photo credit of live H. murphyi holotype (NCSM 85490): BLS.
FIG. 1 in Undescribed Diversity in a Widespread, Common Group of Asian Mud Snakes (Serpentes: Homalopsidae: Hypsiscopus)
FIG. 1. Distribution map of Hypsiscopus. Shaded regions and points represent known ranges as of this study and sampling localities, respectively. Stars show type localities; note: type locality for H. plumbea is 'Java'; central coordinate given.
FIGURE 2 in Phylogeny and biogeography of the Enhydris clade (Serpentes: Homalopsidae)
FIGURE 2. Geographic distribution of the species of the Enhydris clade in South and Southeast Asia. Homalopsid snakes are generally found in lowland habitats at elevations of less than 200 m. These maps are based on a combination of verified published localities (Murphy 2007) and adjacent contiguous lowland (<200 m) topography. Note that due to the size of the maps some higher elevations in southern Myanmar, the Thai-Malay Peninsula, Sumatra, Java, and Vietnam appear shaded on the Enhydris enhydris map even though these mountains are not inhabited by E. enhydris.
FIGURE 1 in Phylogeny and biogeography of the Enhydris clade (Serpentes: Homalopsidae)
FIGURE 1. Six members of the Enhydris clade. A. Enhydris chinensis from Orchid Island, Tawain. Photo by Stephen Mackessy. B. Enhydris enhydris from Lake Songhkla, Thailand, JCM. C. Enhydris subtaeniata from the Khorat Basin, Thailand. Photo by J.C. Murphy. D. Enhydris innominata from the Mekong delta in southern Viet Nam. Photo by Bryan Stuart. E. Enhydris jagorii from Thailand's central plain. Photo by J.C. Murphy. F. Enhydris longicauda from Tonle Sap, Cambodia. Photo by J.C. Murphy.
FIGURE 3 in Phylogeny and biogeography of the Enhydris clade (Serpentes: Homalopsidae)
FIGURE 3. Relationships among species in the Enhydris clade from four different phylogenetic analyses of two datasets. Each analysis type recovered different phylogenetic relationships but for each analysis there were no differences in the phylogenetic relationships generated by the two datasets (primary data set: ATPase ~ 850 bp; ND4 ~ 700 bp plus adjacent 3' tRNAs ~ 180 bp; cyt b ~1120 bp, PRLR ~580 bp and secondary data set: 12S rRNA - 865bp, 16S rRNA – 450bp, and c-mos - 585 bp). A. Maximum likelihood (ML) phylogeny with bootstrap support values. B. Bayesian phylogeny with posterior probabilities (PPs). C. Maximum parsimony (MP) phylogeny with bootstrap support values. D. Maximum parsimony excluding third codon positions of mitochondrial coding genes (MPexcl) with bootstrap support values. In each tree bootstrap support values or Bayesian PPs are presented first for the primary dataset followed by the values from the secondary dataset. Where bootstrap support or Bayesian PPs were the same for both data sets a single value is provided.
FIGURE 9 in The dog-faced water snakes, a revision of the genus Cerberus Cuvier, (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 9. The lectotype of Cerberus schneiderii (RMNH 1173) with the locality data – Timor. A and B compares the head scales of the lectotype to those in Schlegel's drawing. The arrangement of the fragments of the frontal plate made it possible to identify this snake. C. Shows the lectotype in profile.
FIGURE 5. The Palau Bockadam, Cerberus dunsoni AMNH116020 in The dog-faced water snakes, a revision of the genus Cerberus Cuvier, (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 5. The Palau Bockadam, Cerberus dunsoni AMNH116020. Note the rounded scales and the parietal scale fragments (arrows).
FIGURE 8 in The dog-faced water snakes, a revision of the genus Cerberus Cuvier, (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 8. Schneider's Bockadam, Cerberus schneiderii. Top: near Trang, Thailand; Bottom is from Pak Phanang, Thailand. Photos JCM.
FIGURE 4 in The dog-faced water snakes, a revision of the genus Cerberus Cuvier, (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 4. The Australian Bockadam, Cerberus australis. Two color morphs from the Northern Territory, vicinity of Darwin. JCM.
FIGURE 2. Plate 17 in The dog-faced water snakes, a revision of the genus Cerberus Cuvier, (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 2. Plate 17 from Russell (1796) illustrating the bockadam. This illustration is the type specimen for Cerberus rynchops and several of its synonyms.
FIGURE 10. A in The dog-faced water snakes, a revision of the genus Cerberus Cuvier, (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 10. A summary of the phylogenetic relationships within the genus Cerberus modified from Alfaro et al. (2004, 2008) showing the localities sampled and taxa currently recognized less C. dunsoni. Genetic divergence between the Asian and Australian clades was 0.06–0.12. While the divergence among the clades west of Australia was less: Thai-Malay peninsula and Gulf of Thailand 0.02–0.05; the Sunda Islands and Sulawesi 0.02–0.05; the Philippines 0.02–0.06; India and Myanmar were 0.04–0.06; and the Philippines were 0.02–0.5).
FIGURE 1. K in A new genus and species of mud snake from Myanmar (Reptilia, Squamata Homalopsidae)
FIGURE 1. K-mer profile anaylsis and estimates of genome metrics of GenomeScope.
FIGURE 3 in A new genus and species of mud snake from Myanmar (Reptilia, Squamata Homalopsidae)
FIGURE 3. Blobplot of the final assembly.
FIGURE 8 in The masked water snakes of the genus Homalopsis Kuhl & van Hasselt, 1822 (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 8. Homalopsis mereljcoxi sp. nov., holotype FMNH 263756. Details of scalation.
FIGURE 6 in The masked water snakes of the genus Homalopsis Kuhl & van Hasselt, 1822 (Squamata, Serpentes, Homalopsidae), with the description of a new species
FIGURE 6. Homalopsis buccata, neotype, FMNH 250114 from Singapore.
FIGURE 6 in Taxonomic identity of two enigmatic aquatic snake populations (Squamata: Homalopsidae: Cerberus and Homalopsis) from southern Thailand
FIGURE 6. Live subadult male from Phuket Province, detail of head. Photograph by M. Sumontha.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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