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256 results for “Salamandridae”
FIGURES 3–10 in Description of three new water mite species of Hygrobates Koch, 1837 (Lurchibates Goldschmidt & Fu, 2011) (Acari, Hydrachnidia, Hygrobatidae), parasitic in newts of the genera Paramesotriton and Pachytriton (Amphibia, Caudata, Salamandridae) from China
FIGURES 3–10. Hygrobates intermedius sp. nov., holotype male, Fig. 3. I-leg, left, Fig. 4. II-leg, left, Fig. 5. III-leg, left, Fig. 6. IV-leg, left, Fig. 7. left chelicera in medial view, Fig. 8. right chelicera in lateral view, Fig. 9. left palp in medial view, Fig. 10. right palp in lateral view; scale bar = 100 μm.
FIGURES 1–2 in Description of three new water mite species of Hygrobates Koch, 1837 (Lurchibates Goldschmidt & Fu, 2011) (Acari, Hydrachnidia, Hygrobatidae), parasitic in newts of the genera Paramesotriton and Pachytriton (Amphibia, Caudata, Salamandridae) from China
FIGURES 1–2. Hygrobates intermedius sp. nov., holotype male, Fig. 1. ventral view of idiosoma, Fig. 2. genital skeleton in anterior view; scale bar = 100 μm.
FIGURE 1 in Taxonomic amendments of Southeast Asian newt species of the genera Pachytriton, Paramesotriton and Laotriton (Amphibia, Urodela, Salamandridae) parasitized by water mites of the subgenus Lurchibates (Hydrachnidia, Hygrobatidae, Hygrobates)
FIGURE 1. Dorsal (A and B) and ventral (C and D) views of host newts from which the type specimens of Hygrobates salamandrarum were collected. Figure A and C show the mature male. Photos were provided by Arne Lindau. Scale shows 10mm.
Supplementary material 2 from: Bernardes M, Le MD, Nguyen TQ, Pham CT, Pham AV, Nguyen TT, Rödder D, Bonkowski M, Ziegler T (2020) Integrative taxonomy reveals three new taxa within the Tylototriton asperrimus complex (Caudata, Salamandridae) from Vietnam. ZooKeys 935: 121-164. https://doi.org/10.3897/zookeys.935.37138
Time-calibrated tree of Tylototriton based on ND2 sequences. The values indicate the split time (in million years ago) calculated by BEAST 1.8.0.
Supplementary material 1 from: Bernardes M, Le MD, Nguyen TQ, Pham CT, Pham AV, Nguyen TT, Rödder D, Bonkowski M, Ziegler T (2020) Integrative taxonomy reveals three new taxa within the Tylototriton asperrimus complex (Caudata, Salamandridae) from Vietnam. ZooKeys 935: 121-164. https://doi.org/10.3897/zookeys.935.37138
Regression of each morphological character to its respective snout-vent length value for taxon 1 and taxon 2
Data from: Phylogeographic analysis reveals northerly refugia for the riverine amphibian Triturus dobrogicus (Caudata: Salamandridae)
We investigated the recent evolutionary history of the Danube crested newt, Triturus dobrogicus through reconstructions of: (1) the number and position of refugia at the last glacial maximum, (2) the role of major central European rivers in pattern of post-glacial dispersal, and (3) the present-day distribution pattern. We analysed sequences of mitochondrial DNA (ND2, 1065 bp) and six microsatellite loci in 363 T. dobrogicus individuals from 58 populations covering the range of the species. Our analyses suggested that T. dobrogicus survived the last glacial maximum in two separate refugia positioned in northwestern Pannonia and in Southern Pannonia from where its range expanded along the Danube and Tisza Rivers. Our findings also confirmed that rivers played an important role in shaping the evolutionary history of amphibian species in Central Europe. We compared the T. dobrogicus range with another lowland amphibian, the fire-bellied toad Bombina bombina, using species distribution modelling. In line with these models, the isolated mountains inside Pannonia are occupied not by B. bombina, but by its mountain-dwelling sister-species B. variegata. However, in contrast to the model, crested newts (including T. dobrogicus) are absent from these mountains. We attribute this biogeographical discrepancy to the positioning of the species' refugia at the last glacial maximum.
Data from: A redescription and phylogenetic analysis based on new material of the fossil newts Taricha oligocenica Van Frank, 1955 and Taricha lindoei Naylor, 1979 (Amphibia, Salamandridae) from the Oligocene of Oregon.
Complete body fossils of salamanders are relatively rare, but provide critical information on the evolutionary roots of extant urodele clades. We describe new specimens of the fossil salamandrids Taricha oligocenica Van Frank, 1955, and Taricha lindoei Naylor, 1979, from the Oligocene Mehama and John Day Formations of Oregon that illustrate aspects of skeletal morphology previously unseen in these taxa, and contribute to our understanding of population-level variation. Morphological analysis of these specimens supports the classification of T. oligocenica and T. lindoei as two different species, distinct from extant Taricha. Parsimony-based, heuristic analysis of phylogeny using 108 morphological characters for 40 taxa yields different results from a phylogenetic analysis that excludes four taxa known only via vertebrae. Our smaller analysis generally agrees with molecular phylogenies of the family Salamandridae, but with poorer resolution for molgin newts, especially between Taricha and Notophthalmus. The analysis including all taxa produced polytomies mostly related to complications from several fossil taxa. The presence or absence of dorsally expanded, sculptured neural spine tables on trunk vertebrae, an important character in past descriptions of fossil salamandrids, appears to be either homoplastic within the Salamandridae, or requires an expansion of characters or character states. T. oligocenica and T. lindoei are separate species of an at least 33 million-year-old clade, but their relationships with each other and extant North American salamandrids remain unclear with current levels of morphological data. Salamandrid research requires additional morphological data, particularly for the vertebrae and ribs, to better resolve salamandrid evolutionary history through morphological characters.
FIGURE 2 in Salamandridae) using molecular and morphological data. Revalidation of the taxon Pleurodeles nebulosus (Guichenot, 1850)
FIGURE 2. Schematic drawing showing all eight morphometric measurements used in the present study. SVL—snoutvent length; TL—tail length; Sp3T—right hind limb shank length; 3T—right hand third toe length; AL—length of the anterior right arm; HW—head width; IOW— interorbital width; HL—head length.
FIGURE 4 in Salamandridae) using molecular and morphological data. Revalidation of the taxon Pleurodeles nebulosus (Guichenot, 1850)
FIGURE 4. Schematic diagrams of the palatine teeth of P. p o i re t i and P. nebulosus obtained with plasticine casts (see material and methods). Numbers inside the drawings refer to specimens codes from Table 1. The position of the choanae was also obtained in the casts and it has been highlighted above the palatine teeth. Every drawing has a scale bar to the left, which corresponds to 2 mm.
FIGURE 5 in Salamandridae) using molecular and morphological data. Revalidation of the taxon Pleurodeles nebulosus (Guichenot, 1850)
FIGURE 5. ML tree (Log likelihood 2240.36916; GTR+G model of sequence evolution) inferred from cytochrome b and 12S rRNA sequences. Bootstrap support is shown by the branches. Numbers separated by a dash from the species names refer to specimen codes from Fig 1 and Table 1. The estimated date for the separation between P. p o i re t i and P. nebulosus and for the calibration point used in the analysis is marked with a filled circle.
FIGURE 6 in Salamandridae) using molecular and morphological data. Revalidation of the taxon Pleurodeles nebulosus (Guichenot, 1850)
FIGURE 6. Ventral aspect of the skull of A.adult P. p o i re t i, BMNH 1920.1.20.1383 (Bône) and B. adult P. nebulosus, BMNH 130a (Algiers).
FIGURE 1 in Salamandridae) using molecular and morphological data. Revalidation of the taxon Pleurodeles nebulosus (Guichenot, 1850)
FIGURE 1. Map of North Africa showing localities of Pleurodeles used in the present study. See Table 1 and Fig. 5 for further details. The dashed line delimits the approximate distribution range of P. poireti. We refer to it in the text as the Edough Peninsula.
FIGURE 3 in Salamandridae) using molecular and morphological data. Revalidation of the taxon Pleurodeles nebulosus (Guichenot, 1850)
FIGURE 3. Photograph showing nine specimens of P. p i o i re t i (above) and four P. nebulosus (below). A 23 centimetres scale bar is shown on the lefthand side of the picture; black rectangles and intermediate white spaces all represent 1 cm. Numbers above the specimens refer to: 1. BMNH 1920.1.20.1327.2, largest specimen of P. p oireti included in the present study. Female from Bône (Annaba); 2. BMNH 1946.9.6.77, male of P. poireti from Mount Edough; 3. BMNH 1946.9.6.78, male of P. p o i re t i from Mount Edough; 4. BMNH 1946.9.6.79, male of P. poireti from Mount Edough; 5. BMNH 1946.9.6.80, male of P. p o i re t i from Mount Edough; 6. BMNH 1946.9.6.81, male of P. p o i re t i from Mount Edough; 7. BMNH 1946.9.6.79, male of P. poireti from Mount Edough; 8. MNHNP 4744, female, paralectotype of P. p o i re t i from Bône (Annaba); 9. MNHNP 4744A, male, lectotype of P. p o i ret i from Bône (Annaba); 10. BMNH 1.1.3.1.a, largest specimen of P nebulosus recorded to date. Male from N. Africa; 11. BMNH 88.4.9.3, female of P. nebulosus from Algiers; 12. BMNH 88.4.4, male of P. nebulosus from Algiers; 13. MNHNP 1442, female, lectotype of P. nebulosus from Algiers.
FIGURE 2 in A new species of Paramesotriton (Caudata: Salamandridae) from Guizhou Province, China
FIGURE 2. (a) Maximum likelihood (ML) phylogram based on the combined mtDNA sequence data set. The numbers above each branch represent bootstrap support for ML (>50%) / Bayesian posterior probability (>90%). (b) The strict consensus tree of the maximum parsimony (MP) trees. Numbers above branches are MP bootstrap proportions (>50%).
FIGURE 1 in A new species of Paramesotriton (Caudata: Salamandridae) from Guizhou Province, China
FIGURE 1. Map showing the distribution of the species of Paramesotriton used in this study. For information on species and sampling sites 1–9, see Table 2.
FIGURE 4 in A new species of the genus Paramesotriton (Caudata: Salamandridae) from Guangxi Zhuang Autonomous Region, southern China
FIGURE 4. Radiograph of P. ermizhaoi (CIB 88141, holotype: 3). Arrow points to the 13th trunk vertebrae.
FIGURE 2 in A new species of the genus Paramesotriton (Caudata: Salamandridae) from Guangxi Zhuang Autonomous Region, southern China
FIGURE 2. Maximum-likelihood tree based on ND2 sequences. Bayesian inference produced a consistent topology. Numbers on branches: boostrap support from ML analysis; bootstrap support from MP analysis; Bayesian posterior probability. Tree is rooted with Pachytriton brevipes and P. labiatus.
FIGURE 3. A in A new species of the genus Paramesotriton (Caudata: Salamandridae) from Guangxi Zhuang Autonomous Region, southern China
FIGURE 3. A: Dorsal view of living P. ermizhaoi (CIB 95998, paratype: Ƥ); B: Ventral view of living P. ermizhaoi (CIB 88141, holotype: 3). C: habitat of P. ermizhaoi in Mt. Dayao, Jinxiu Yao Autonomous County, Guangxi Zhuang Autonomous Region, China.
FIGURE 1 in A new species of the genus Paramesotriton (Caudata: Salamandridae) from Guangxi Zhuang Autonomous Region, southern China
FIGURE 1. Sample localities used in this study. Except for Paramesotriton fuzhongensis, all species were collected from their respective type localities. 1: P. chinensis; 2: P. caudopunctatus; 3: P. fuzhongensis; 4: P. hongkongensis; 5: P. guangxiensis; 6: P. deloustali; 7: P. laoensis. Shaded areas represent the two disjunct distributions of P. ch i n e n s i s. Asterisk denotes the type locality of P. e r m i z h a o i.
FIGURE 5. A in A new species of newt of the genus Paramesotriton (Salamandridae) from southwestern Guangdong, China, with a new northern record of P. longliensis from western Hubei
FIGURE 5. A: dorsal view of male Paramesotriton longliensis from western Hubei (CIB 97885). B: dorsal view of female P. longliensis from the same locality (CIB 97884); both males and females have a pair of yellowish-white caudal stripes that are continuous with the dorsolateral stripes anteriorly. C: ventral view of the same male (lower) and female (upper). D: river where the new P. longliensis population is found. E: close-up of the head region (CIB 97884), showing the knob-like protuberance (red arrows). F: A male P. longliensis (CIB 97882) in preservative.
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