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1,047 results for “Salamanders”
Figure 9 in Cranial anatomy of the stem salamander Kokartus honorarius (Amphibia: Caudata) from the Middle Jurassic of Kyrgyzstan
Figure 9. Skull reconstructions of Kokartus honorarius (A–D). A, B, redrawn from Nesov et al. (1996). C, D, new reconstruction. E, skull of larva of branchiosaurid Apateon gracilis, redrawn from Schoch & Fröbisch (2006). F, two centres of ossification of the squamosal in a larva of Ranodon sibiricus (IV stage), redrawn from Lebedkina (1979). G, two centres of ossification of the squamosal in a larva of Rana esculenta at the end of metamorphosis, redrawn from Lebedkina (1979). Abbreviations: caud, otic capsule; den, dentary; dsq, dorsal ossification of squamosal, fr, frontal; mam, m. adductor mandibulae; Mc, Meckel's cartilage; mdm, m. depressor mandibulae; nas, nasal; pa, ascendens process of palatoquadratal cartilage; par, parietal; pmx, premaxilla; prsph, parasphenoid; po, otic process of palatoquadratal cartilage; ppt, pterygoid process of palatoquadratal cartilage; pt, pterygoid; qj, quadratojugal; sq, squamosal; st, supratemporal; vsq, ventral ossification of squamosal.
Figure 2. Kokartus honorarius, CCMGE 1 in Cranial anatomy of the stem salamander Kokartus honorarius (Amphibia: Caudata) from the Middle Jurassic of Kyrgyzstan
Figure 2. Kokartus honorarius, CCMGE 1/12937. Partial skull as exposed. A, B, photograph and interpretative drawing. Abbreviations: cor, coronoid; den, dentary; fr, frontal; hb1, hypobranchial 1; hb2, hypobranchial 2; if, internarial fenestra; mx, maxilla; nas, nasal; par, parietal; ph, phalanges; pmx, premaxilla; pra?, prearticular?; prfr?, prefrontal?; prsph, parasphenoid; pt, pterygoid; sq, squamosal; vom, vomer. Scale bars = 5 mm.
Larval A. bishopi microsatellite data from: Metapopulation genetics of endangered reticulated flatwoods salamanders (Ambystoma bishopi) in a dynamic and fragmented landscape
<p>The dataset consists of 9 microsatellite markers used to analyze reticulated flatwoods salamanders' (<em>Ambystoma bishopi</em>) population structure on Eglin AFB. Samples came from various breeding ponds and allele sizes were scored using GeneMapper (GeneMapper v4.0; Applied Biosystems). Data was collected via allele scoring in GeneMapper by two independent researchers. Allele sizes for each individual have been re-formatted for various programs using the microsatellite Add-in in Excel as well as by using the GenAlEx extension in Excel. </p>
Data analysis from: Demographic consequences of changing body size in a terrestrial salamander
<p>Changes in climate can alter individual body size, and the resulting shifts in reproduction and survival are expected to impact population dynamics and viability. However, appropriate methods to account for size-dependent demographic changes are needed, especially in understudied yet threatened groups such as amphibians. We investigated individual and population-level demographic effects of changes in body size for a terrestrial salamander using capture-mark-recapture data. For our analysis, we implemented an integral projection model parameterized with capture-recapture likelihood estimates from a Bayesian framework. Our study combines survival and growth data from a single dataset to quantify the influence of size on survival while including different sources of uncertainty around these parameters, demonstrating how selective forces can be studied in populations with limited data and incomplete recaptures. We found a strong dependency of the population growth rate on changes in individual size, mediated by potential changes in selection on mean body size and on maximum body size. Our approach of simultaneous parameter estimation can be extended across taxa to identify eco-evolutionary mechanisms acting on size-specific vital rates, and thus shaping population dynamics and viability.</p>
FIGURE 6 in Two New Species of Salamanders, Genus Bolitoglossa (Amphibia: Plethodontidae), from the Eastern Colombian Andes
FIGURE 6. Adults of Bolitoglossa leandrae sp. nov. Coloration in life: A. Males with tail and dorsum dark brown with lines of yellow along the body and abdomen dark brown with small brown spots. B. Male and female. Female with dorsum copper brown. C. Hand. D. Head, lateral view.
FIGURE 5 in Two New Species of Salamanders, Genus Bolitoglossa (Amphibia: Plethodontidae), from the Eastern Colombian Andes
FIGURE 5. Localities of new species of Bolitoglossa. Tama National Natural Park, Departamento de Norte de Santander, Colombia.
FIGURE 3 in Two New Species of Salamanders, Genus Bolitoglossa (Amphibia: Plethodontidae), from the Eastern Colombian Andes
FIGURE 3. Adults of Bolitoglossa tamaense sp. nov. Coloration in life: A. Males with tail and limbs yellow, dorsum dark brown with small yellow spots. B. Females with the tail, dorsum and limbs orange, with a dark brown head. C. Males and females dark brown with orange feet. D. Females orange from the tail to the head, with limbs dark brown. E. Males with the tail, head and feet slightly stained red. F. Males with dorsum partially orange with dark spots, with dark brown limbs. G. Males with the tail orange, with yellow feet, head slightly stained orange. H. Males and females with a cream-colored dorsum.
FIGURE 4. Bolitoglossa tamaense, holotype. A. Dorsum. B. Head, lateral view. C. Hand. D. Leg. E. Head, dorsal view. F in Two New Species of Salamanders, Genus Bolitoglossa (Amphibia: Plethodontidae), from the Eastern Colombian Andes
FIGURE 4. Bolitoglossa tamaense, holotype. A. Dorsum. B. Head, lateral view. C. Hand. D. Leg. E. Head, dorsal view. F. Head, ventral view.
FIGURE 2 in Two New Species of Salamanders, Genus Bolitoglossa (Amphibia: Plethodontidae), from the Eastern Colombian Andes
FIGURE 2. Bayesian tree of Bolitoglossa (Eladinea) based on analysis of the 16S rRNA gene; the South american clade of Eladinea is indicated by heavier lines. The values on the internodes indicate support values for each node in the following way: Bayesian posterior probability/ML bootstrap support. Support values for nodes with prior probabilities lower than 0.95 and bootstrap support below 70 are not shown. B. mexicana and B. zapoteca were used as outgroups.
FIGURE 1 in Two New Species of Salamanders, Genus Bolitoglossa (Amphibia: Plethodontidae), from the Eastern Colombian Andes
FIGURE 1. Distribution of South American Bolitoglossa (Eladinea). 1. B. hypacra, 2. B. adspersa, 3. B. hiemalis, 4. B. orestes, 5. B. vallecula, 6. B. spongai, 7. B. guaramacalensis, 8. B. palmata, 9. B. savagei, 10. B. tatamae, 11. B. walkeri, 12. B. ramosi, 13. B. capitana, 14. B. nicefori, 15. B. phalarosoma, 16. B. pandi, 17. B. borburata, 18. B. altamazonica, 19. B. sima, 21. B. peruviana, 22. B. chica, 23. B. medemi, 24. B. equatoriana, 25. B. lozanoi, 26. B. silverstonei, 27. B. biseriata, 28. B. guaneae, 29. B. tamaense, 30. B. leandrae.
FIGURE 1 in New species of salamander (Caudata: Plethodontidae: Cryptotriton) from Quebrada Cataguana, Francisco Morazán, Honduras, with comments on the taxonomic status of Cryptotriton wakei
FIGURE 1. Adult male holotype of Cryptotriton necopinus sp. nov. (MVZ 269392), SVL 26.4 mm. Photograph by J.R. McCranie.
FIGURE 3 in New species of salamander (Caudata: Plethodontidae: Cryptotriton) from Quebrada Cataguana, Francisco Morazán, Honduras, with comments on the taxonomic status of Cryptotriton wakei
FIGURE 3. Map of southern Mexico, Guatemala, and western Honduras showing the known collecting localities for the species of Cryptotriton.
FIGURE 5 in New species of salamander (Caudata: Plethodontidae: Cryptotriton) from Quebrada Cataguana, Francisco Morazán, Honduras, with comments on the taxonomic status of Cryptotriton wakei
FIGURE 5. Phylogenetic tree of six named species of Middle American Cryptotriton from a maximum likelihood (ML) analysis of DNA sequences of two mitochondrial genes (16S and cytb). Support values above branches are bootstrap values from ML analysis, and values below branches are posterior probabilities from Bayesian analysis. Support values below 50 (bootstrap) or 0.5 (posterior probability) are not shown. A scale bar is included at the bottom left in units of substitutions per site.
FIGURE 4 in New species of salamander (Caudata: Plethodontidae: Cryptotriton) from Quebrada Cataguana, Francisco Morazán, Honduras, with comments on the taxonomic status of Cryptotriton wakei
FIGURE 4. Illustration of select elements of the anterior portion of the skull of the holotype of Cryptotriton necopinus from an X-ray, following Lynch and Wake (1978). Heavy lines, nasal bone; fine lines, internasal fontanelle; stipple, cartilaginous nasal capsule; blackened area, opening in nasal capsule for external naris. Arrow indicates foramen where prefrontal bone is pierced by nasolacrimal duct. Maxilla and premaxilla drawn with dotted lines where they pass beneath the nasal capsule. Nasal bone on left side of skull and anterior edge of frontal bones not illustrated due to indistinctness on X-ray.
FIGURE 2 in New species of salamander (Caudata: Plethodontidae: Cryptotriton) from Quebrada Cataguana, Francisco Morazán, Honduras, with comments on the taxonomic status of Cryptotriton wakei
FIGURE 2. Adult male holotype of Cryptotriton necopinus sp. nov. (MVZ 269392), showing the nostril opening color in life. Photograph by J.R. McCranie.
FIGURE 13. A in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 13. A pair of egg sacs of O. fuscus sp. nov. in the type locality on 20 December 2013, about one month later from the deposition. Scale bar indicates 10 mm.
FIGURE 12 in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 12. Larvae of O. fuscus sp. nov. (A and B) and a sympatric O. japonicus larva (C) from Sanjo-shi, Niigata Prefecture (In preservation). Larvae of O. japonicus in life (D–F) collected from Tadami-machi, Fukushima Prefecture, near the type locality of O. fuscus sp. nov. Scale bar indicates 10 mm.
FIGURE 10 in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 10. Dorsal and ventral views of male holotype (A and B; KUHE 48284, SVL=69.0 mm) and a female paratype of O. fuscus sp. nov. (C and D; KUHE 48129, SVL=74.8 mm). Scale bar indicates 10 mm.
FIGURE 9 in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 9. (A) Two pairs of egg sacs of O. intermedius sp. nov. deposited on 26 December 2013 by gonadotropin induction. (B) Typical habitat of O. intermedius sp. nov. in the type locality (photo on 11 June 2013).
FIGURE 7 in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 7. Dorsal views of premetamorphic (A) and growing (B–F) larvae of O. intermedius sp. nov. Scale bar indicates 10 mm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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