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Kentropyx borckiana (Squamata, Teiidae) : a unisexual lizard of hybrid origin in the Guiana region, South America. American Museum novitates ; no. 3145

Show simple item record Cole, Charles J. en_US Dessauer, Herbert C. en_US Townsend, Carol R. en_US Arnold, Margaret G. en_US 2005-10-06T17:06:35Z 2005-10-06T17:06:35Z 1995 en_US
dc.description 23 p. : ill. (some col.) ; 26 cm. en_US
dc.description Includes bibliographical references (p. 21-22). en_US
dc.description.abstract "More than 100 females and yet no males of Kentropyx borckiana are known from northern South America and Barbados. Features of external morphology, karyotypes, and biochemical genetics (electrophoresis of proteins encoded by 45 presumptive gene loci) reveal that individuals of K. borckiana from Guyana represent a unisexual clone that originated from one or more parthenogenetic F1 hybrids between Kentropyx calcarata X Kentropyx striata, the other two species of this genus known previously from the Guiana Region. Comparisons include data for Kentropyx altamazonica also, including the first specimens known from Venezuela (Amazonas Territory). Although K. altamazonica and K. calcarata are morphologically similar, genetically they are quite distinct. Origin of the unisexual Kentropyx borckiana involved hybridization between both morphologically and ecologically distinct ancestral species, unlike several other unisexual lizards of Neotropica. For example, clones of the parthenogenetic Gymnophthalmus underwoodi, Cnemidophorus cryptus, and Cnemidophorus pseudolemniscatus originated in the Guiana Region from hybrids between morphologically and ecologically similar, yet genetically distinct, ancestral species"--P. 2. en_US
dc.format.extent 4879802 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. 3145 en_US
dc.subject.lcc QL1 .A436 no.3145, 1995 en_US
dc.subject.lcsh Kentropyx borckiana. en_US
dc.subject.lcsh Lizards -- Guiana. en_US
dc.subject.lcsh Reptiles -- Guiana. en_US
dc.title Kentropyx borckiana (Squamata, Teiidae) : a unisexual lizard of hybrid origin in the Guiana region, South America. American Museum novitates ; no. 3145 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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