Allotriploidy in Natural Hybrid Frogs, Rana chiricahuensis × R. pipiens, from Arizona: Chromosomes and Electrophoretic Evidence

Publication Type:Journal Article
Year of Publication:1985
Authors:Green, DM, Delisle, DM
Journal:Journal of Herpetology
Volume:19
Date Published:1985
ISBN Number:00221511
Keywords:Panthera pardus
Abstract:

In samples totalling 16 leopard frogs, R. chiricahuensis and R. pipiens, two triploid hybrids were found, both from a collection of four frogs from a sympatric locality. Analysis of the normal karyotype of R. chiricahuensis shows it to be extremely similar to that of R. pipiens. It was thus not possible to identify the three chromosome sets in the triploids cytologically. C-banding was weak, indicating that little heterochromatin was present. Electrophoretic evidence based on 21 isozyme loci indicates one hybrid to be 2 chiricahuensis, 1 pipiens and the other to be 1 chiricahuensis, 2 pipiens. The unexpectedly high occurrence of triploid hybrids may be due to higher viability of triploids relative to diploid hybrids.

URL:http://www.jstor.org/stable/1564266
Taxonomic name: 
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