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The Sex of Hatchlings of Five Apparently Unisexual Species of Whiptail Lizards (Cnemidophorus, Teiidae)

T. Paul Maslin
The American Midland Naturalist
Vol. 76, No. 2 (Oct., 1966), pp. 369-378
DOI: 10.2307/2423092
Stable URL: http://www.jstor.org/stable/2423092
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Sex of Hatchlings of Five Apparently Unisexual Species of Whiptail Lizards (Cnemidophorus, Teiidae)
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Abstract

Eggs of C. exsanguis, perplexus, tesselatus, and velox were harvested from field-caught lizards and incubated. All the hatchlings are females. Supplementary evidence from exclusively female hatchlings of these forms and C. cozumelus, collected in areas where no other teiid lizards occur, supports the hypothesis that these species are parthenogenetic.

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