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A name for the poison frog of Cordillera Azul, eastern Peru, with notes on its biology and skin toxins (Dendrobatidae). American Museum novitates ; no. 2674

Show simple item record Myers, Charles W. en_US Daly, John W. en_US 2005-10-06T18:15:15Z 2005-10-06T18:15:15Z 1979 en_US
dc.description 24 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 23-24). en_US
dc.description.abstract "Dendrobates silverstonei, new species, is a distinctive orange-and-black or red-and-black frog discovered in the 1940s, as a consequence of road construction across the Cordillera Azul on the Amazonian flank of the Peruvian Andes. A colored photograph of a nurse frog, engaged in the dendrobatid trait of tadpole carrying, was widely promulgated in the multilingual editions of Cochran's Living amphibians of the world, as well as in other popular works. The species is now removed from consideration with Phyllobates bicolor, the only frog with which it has been previously confused or seriously compared. The newly named silverstonei belongs to a group containing the type species of Dendrobates rather than to the demonstrably monophyletic group containing the type species (bicolor) of Phyllobates. The color pattern of D. silverstonei is a convergent autapomorphy showing only the most superficial resemblance to that of P. bicolor, and silverstonei lacks the potent batrachotoxin alkaloids of Phyllobates. Skin secretions contain small amounts of alkaloids, mainly of the pumiliotoxin-A class. Dendrobates siliverstonei is placed tentatively in a species group containing D. trivittatus, because of similarities in morphology and natural history. The highland Dendrobates silverstonei (above 1300 m. elevation) shares various biological attributes with the widespread lowland D. trivittatus (below 800 m.), and their nearly identical songs are described as retarded trill calls, the fourth class of dendrobatid vocalizations to be defined. Both species are wary and usually quick to hide, and both seem to have some preference for edge situations. Similar-sized clutches of eggs of each species have been found in dead leaves on the forest floor, with male frogs in attendance. Tadpoles are carried to terrestrial water by the male nurse frog. There is interpopulational variation in the color pattern of D. silverstonei, and perhaps also in the ontogenetic development of the pattern. Geographic variation is likely to be extensive if the species proves to occupy a large range in the montane forest of Cordillera Azul"--P. [1]. en_US
dc.format.extent 12535657 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, N.Y. : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 2674 en_US
dc.subject.lcc QL1 .A436 no.2674, 1979 en_US
dc.subject.lcsh Dendrobates silverstonei. en_US
dc.subject.lcsh Frogs -- Peru. en_US
dc.subject.lcsh Toxins. en_US
dc.subject.lcsh Alkaloids. en_US
dc.subject.lcsh Amphibians -- Peru. en_US
dc.subject.lcsh Poisonous animals -- Peru. en_US
dc.title A name for the poison frog of Cordillera Azul, eastern Peru, with notes on its biology and skin toxins (Dendrobatidae). American Museum novitates ; no. 2674 en_US
dc.title.alternative Poison frog en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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