Hybridization between whiptail lizards in Texas :
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Hybridization between whiptail lizards in Texas : Aspidoscelis laredoensis and A. gularis, with notes on reproduction of a hybrid

Title Variants

Alternative: Aspidoscelis laredoensis and A. gularis hybridization

Related Titles

Series: American Museum novitates, number 3947


Cole, Charles J. , author

Dessauer, Herbert C. , author
Paulissen, Mark A., , author
Walker, James M. , author




Published material

Publication info

New York, NY :American Museum of Natural History,[2020]


Caption title.

"March 6, 2020."

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Karyotypes and allozyme data for 32 genetic loci overwhelmingly support the conclusion that Aspidoscelis laredoensis is a diploid all-female species that had a hybrid origin between A. gularis x A. sexlineatus. Comparisons of allozymes in individuals representing three mother-to-daughter generations raised in the laboratory suggest that they reproduce by parthenogenetic cloning. In addition to two previously described morphotypes (pattern classes A and B) that occur in southern Texas, we report the existence of three all-female clonal lineages based on allozymes. Individuals of at least one of these lineages occasionally hybridize in nature with males of A. gularis, producing viable and healthy triploid offspring that can grow to adulthood, one of which herself produced an offspring in the laboratory and could have represented a new, clonal triploid species. The possibility exists that cloned offspring of triploid hybrids are present in South Texas and/or northern Mexico, awaiting discovery. These would represent a new species that would appear to be very similar to A. laredoensis.


Aspidoscelis , Aspidoscelis gularis , Aspidoscelis laredoensis , Aspidoscelis sexlineatus , Cloning , Genetics , Hybridization , Lizards , Parthenogenesis in animals , Reproduction , Reptiles , Texas, South

Call Number

QL1 .A436 no.3947 2020




OCLC: 1143389763




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