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On the uniquely fragmented distribution of a rare Panamanian snake, Dipsas nicholsi (Colubridae, Dipsadinae) ; American Museum novitates, no. 3554

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dc.contributor.author Myers, Charles W. en_US
dc.contributor.author Ibáñez D., Roberto. en_US
dc.contributor.author Cadle, John E. en_US
dc.date.accessioned 2007-03-23T16:22:29Z
dc.date.available 2007-03-23T16:22:29Z
dc.date.issued 2007 en_US
dc.identifier.uri http://hdl.handle.net/2246/5842
dc.description 18 p. : ill. (some col.), maps ; 26 cm. en_US
dc.description Includes bibliographical references (p. 16-17). en_US
dc.description.abstract Dipsas nicholsi has been known from a handful of specimens collected during the final three-quarters of the 20th century. All came from a restricted lowland area (60-150 m) in central Panama, in the upper drainage of the Río Chagres. A recently identified specimen, the first known juvenile and only the second female, was found in 1997 in the Darién highlands (Serranía de Jingurudó, 855 m) of extreme eastern Panama, about 250 km from the clustered lowland localities in central Panama. It differs from central Panamanian specimens in some scutellation characters and especially in details of dorsal color pattern. The species' rarity makes it impossible to determine whether differences reflect geographic isolation or unknown aspects of ontogenetic, sexual, or individual variation. Distributional disruptions are commonplace in the Panamanian herpetofauna, although difficult to verify in the case of rare species. However, in the absence of a present-day habitat corridor, the Darién specimen of Dipsas nicholsi clearly represents a population widely separated and discontinuous from the one in central Panama. The Serranía de Jingurudó population, apparently a distributional relict, slightly closes the wide geographic gap between Dipsas nicholsi and its likely sister species, D. andiana, of western Ecuador. Commentary is provided on the cartographic names of several eastern Panamanian highlands. The Serranía de Jingurudó takes its name from a river, as shown by the Emberá suffix -dó. This highland was known for nearly half a century as the Sierra or Serranía de "Jungurudó", probably a confused combination of a still-older map name (Sierra de "Jungururo") and the Río Jingurudo. en_US
dc.format.extent 2914379 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates, no. 3554 en_US
dc.subject.lcc QL1 .A436 no.3554 2007 en_US
dc.subject.lcsh Dipsas nicholsi -- Geographical distribution. en_US
dc.subject.lcsh Dipsas nicholsi -- Panama -- Darien (Province) en_US
dc.subject.lcsh Dipsas -- Panama -- Geographical distribution. en_US
dc.subject.lcsh Fragmented landscapes -- Panama. en_US
dc.subject.lcsh Relicts (Biology) -- Panama. en_US
dc.subject.lcsh Rare reptiles -- Panama -- Geographical distribution. en_US
dc.subject.lcsh Rare reptiles -- Panama -- Darien (Province) en_US
dc.subject.lcsh Names, Geographical -- Panama -- Darien (Province) en_US
dc.subject.lcsh Snakes -- Panama -- Geographical distribution. en_US
dc.subject.lcsh Snakes -- Panama -- Darien (Province) en_US
dc.subject.lcsh Reptiles -- Panama -- Geographical distribution. en_US
dc.subject.lcsh Reptiles -- Panama -- Darien (Province) en_US
dc.subject.lcsh Darien (Panama : Province) en_US
dc.subject.lcsh Panama en_US
dc.title On the uniquely fragmented distribution of a rare Panamanian snake, Dipsas nicholsi (Colubridae, Dipsadinae) ; American Museum novitates, no. 3554 en_US
dc.title.alternative Rare Panamanian snake 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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