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1,047 results for “Salamanders”
FIGURE 24 in Towards rectifying limitations on species delineation in dusky salamanders (Desmognathus: Plethodontidae): An ecoregion-drainage sampling grid reveals additional cryptic clades
FIGURE 24. Sampling localities for Desmognathus fuscus (exclusive of those populations characterized by D. carolinensis mtDNA haplotypes), symbols match those in Fig. 23.
FIGURE 15 in Towards rectifying limitations on species delineation in dusky salamanders (Desmognathus: Plethodontidae): An ecoregion-drainage sampling grid reveals additional cryptic clades
FIGURE 15. Sampling localities for southern populations of Desmognathus monticola, symbols match those in Fig. 14B.
Salamander retina
Drawing uploaded to scidraw.io on: 26 May 2020
Salamander
Drawing uploaded to scidraw.io on: 26 May 2020
Salamander retina
Drawing uploaded to scidraw.io on: 26 May 2020
Salamander
Drawing uploaded to scidraw.io on: 26 May 2020
Figure 6 in Biogeography and evolution of Central American cloud forest salamanders (Caudata: Plethodontidae: Cryptotriton), with the description of a new species
Figure 6. (A) Holotype of Cryptotriton xucaneborum in life. (B) Ventral view of holotype showing dark grey ventral coloration. (C) Ventral view of an individual of C. veraepacis (USAC 1920) showing lighter grey ventral coloration. (D) View of type locality of C. xucaneborum, showing small forest fragment surrounded by agricultural land. (E) Habitat where holotype of C. xucaneborum was collected.
FIGURE 2 in A new salamander of the genus Bolitoglossa (Caudata: Plethodontidae) from the highlands of western Panama
FIGURE 2. Maximum likelihood trees based on 16S mtDNA sequence of Bolitoglossa spp. of the Eladinea subgenus. SHaLRT (Shimodaira and Hasegawa approximate likelihood ratio test) support (%) / ultrafast bootstrap support (%) are shown on the internodes. Outgroups not shown.
FIGURE 5 in A new, narrowly endemic species of swamp-dwelling dusky salamander (Plethodontidae: Desmognathus) from the Gulf Coastal Plain of Mississippi and Alabama
FIGURE 5. The type locality in the floodplain terrace of Ward Bayou (MS: Jackson). The holotype was captured under the partially submerged log second from the bottom on the right. This portion of the floodplain swamp fed by a bluff seepage was dry on three previous visits to the site in October and December 2019. The paratype was captured farther up the same seep in 2013, and the headwaters contain Desmognathus conanti C. Blue flagging from one of our (JYL) previous field surveys (Lamb 2016) is barely visible on trees in the upper center.
Figure 6 in Cranial skeletogenesis of one of the largest amphibians, Andrias japonicus, provides insight into ontogenetic adaptations for feeding in salamanders
Figure 6. Principal components analysis plot of skull characteristics of Andrias japonicus (pink), Hynobius nebulosus (blue), Pleurodeles waltl (green) and Ambystoma mexicanum (orange) along the first two principal components (PC1 and PC2). Diamonds represent larvae, squares juveniles, triangles subadults and circles adults. Changes in shape associated with the principal components are shown as cranial shapes representing the positive and negative extremes of each axis.
FIGURE 5 in A nomenclatural and taxonomic review of the salamanders (Urodela) from Holbrook's North American Herpetology
FIGURE 5. Lectotype (ANSP 821) of Salamandra maculo-quadrata Holbrook, 1840, type locality "Penns[ylvania]." in dorsal (a) and ventral (b) views. The locality, origin, and disposition of the second primary syntype and an unknown number of possible secondary or tertiary syntypes is unknown (see below), but they thereby become paralectotypes. Note the distinct "subquadrate" dorsal blotches (a). Ruler is in mm.
FIGURE 2 in Allocation of Salamandra auriculata Holbrook, 1838, with a new species of swamp-dwelling dusky salamander (Plethodontidae: Desmognathus) from the Atlantic Coastal Plain
FIGURE 2. Holotype (MNHN 2021.0131/RAP0955) of Desmognathus valtos. Specimen is an adult (53.1mm SVL), possibly a female based on apparent lack of mental gland and lack of peramorphic or hypertrophied jaw musculature. The holotype exhibits the diagnostic greenish-grey ground color with a reddish-orange dorsal wash, orangish stripe with indistinct margins on the dorsal surface of the tail, yellowish or orangish portholes on the lateral surfaces in three rows, and granular ventral color-pattern with clusters of xanthophores and melanophores interspersed with white flecks and speckles.
FIGURE 6 in Systematics of the Ocoee Salamander (Plethodontidae: Desmognathus ocoee), with description of two new species from the southern Blue Ridge Mountains
FIGURE 6. Paratypes (USNM 596063–4/RAP0890–1; a, b) and holotype (USNM 596065/RAP0892, c) of Desmognathus adatsihi from Cataloochee Balsam, Great Smoky Mountains (NC: Swain) isolated in life. Photos courtesy of T.W. Pierson; specimens not to scale.
FIGURE 6 in Two new species of lotic breeding salamanders (Amphibia, Caudata, Hynobiidae) from western Japan
FIGURE 6. Egg sacs of Hynobius sematonotos n. sp. from Shobara-shi, Hiroshima Prefecture (A) and egg sacs of Hynobius oyamai n. sp. from Yamaga-shi, Kumamoto Prefecture (B). Scale bar in (B) shows 5 cm.
FIGURE 1 in Two new species of lotic breeding salamanders (Amphibia, Caudata, Hynobiidae) from western Japan
FIGURE 1. Map of western Japan and distributional range of Hynobius naevius and two new species. Range filled by oblique lines: distributional range of H. naevius; range filled by horizontal line: distributional range of H. sematonotos n. sp.; range filled by vertical lines: distributional range of H. oyamai n. sp. Closed symbols: sampling locality used in this study. Closed triangle: supposed type locality and sampling locality of topotypic specimens of H. naevius. Closed star: type locality of H. sematonotos n. sp. Closed diamond: type locality of H. oyamai n. sp.
FIGURE 9 in A New Species Of Salamander (Bolitoglossa: Plethodontidae) From The Cordillera Oriental Of The Colombian Andes
FIGURE 9: Distribution of Bolitoglossa lozanoi from Cordilleras Oriental and Central of Colombia, yellow dots correspond to localities, red dot is the type locality sensu Acosta and Restrepo, 2001; orange dot shows erroneously the distribution proposed by IUCN red List.
FIGURE 7 in A New Species Of Salamander (Bolitoglossa: Plethodontidae) From The Cordillera Oriental Of The Colombian Andes
FIGURE 7: Localities of Bolitoglossa guaneae from western slopes of Cordillera Oriental from Colombia, red dot corresponds at type locality.
FIGURE 2 in A New Species Of Salamander (Bolitoglossa: Plethodontidae) From The Cordillera Oriental Of The Colombian Andes
FIGURE 2: Ventral surfaces showing extensively interdigital webbing with free digital tips on the fingers and toes (Type D in South American species, sensu Brame & Wake, 1963, and category D, sensu Wake & Brame, 1969), in species of the genus Bolitoglossa in the Cordillera Oriental of Colombia. Bolitoglossa pandi: a) ICN 45500; Bolitoglossa guaneae: b) ICN 8557, c) ICN 12772, d) ICN 19558; Bolitoglossa capitana: e) ICN 9221.
Behavioural underpinning of mito-nuclear discordances: insights from fire salamanders
<p><span>Mito-nuclear discordances across secondary contact zones have been described in a wide range of organisms. They consist of a spatial mismatch between nuclear and mitochondrial genomes in terms of location and extension of the contact zone between distinct evolutionary lineages. Despite the evolutionary and biogeographic causes of mito-nuclear discordances have been extensively investigated, we still lack a clear understanding of their phenotypic underpinnings. Here, we test the hypothesis that mtDNA variation could be associated with behavioural variation, and that such association could contribute to asymmetric mitochondrial introgression across a secondary contact zone. We analysed behavioural variation across the mtDNA secondary contact zone of the fire salamander <em>Salamandra salamandra</em> in central Italy, which is displaced 600 km from the nuclear contact zone. We found distinct behavioural profiles in the two mitotypes co-occurring in the contact zone. The introgressed mitotype was associated with a ‘slow-thorough’ dispersal profile, characterized by a less active but more cautious and accurate exploration strategy. This pattern was consistent across life stages and contexts: aquatic larvae and terrestrial juveniles, spontaneous activity and response to novelty. These results support the intriguing hypothesis that personality traits associated with distinct mitotypes could contribute to differential mitochondrial introgression and the formation of biogeographic patterns of mito-nuclear discordance.</span></p>
FIGURE 2 in Molecular taxonomic reassessment of the Cloud Forest's Bolitoglossa salamanders (Caudata: Plethodontidae) from Cordillera de Mérida (Mérida state, Venezuela)
FIGURE 2. Bivariate plot of SVL vs. VT (A) and SVL vs. MT (B) using the data published in the original description of B. orestes (black boxes) and B. spongai (black circles) as reported by Brame & Wake (1962) and Barrio-Amorós & Fuentes- Ramos (1999), respectively, as well as those specimens morphologically analyzed at CVULA that were registered as B. orestes (white boxes) or B. spongai (white circles) based on prior references of geographical distribution. A vertical arrow points to the holotype of each species, while numbers refer to those specimens used for morphological characterization (CVULA), and that were also a part of the set of DNA samples utilized for the molecular analysis described here: 1, IV-7093; 2, IV-7094; 3, IV- 7096; 4, IV-7100; 5, IV-7104; 6, IV-7107;7, IV-7108; and 8, IV-7110.
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