Genetic control of premating-lsolating behavior: Kaneshiro's hypothesis and asymmetrical sexual selection in pocket gophers

R. D. Bradley, S. K. Davis, R. J. Baker

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We studied 112 individuals from a zone of hybridization between two species of pocket gophers, Geomys bursarius major and G. knoxjonesi. Each individual was examined and assigned to a genotypic class based on diploid number, mitochondrial DNA, ribosomal DNA, and three allozymic systems, all of which were fixed for alternative conditions in pure parental populations. F1 and F1-like individuals were found to possess only the mitochondrial DNA type of G. knoxjonesi, indicating that F1. and "F1-like" individuals are the result of unidirectional mating between G. knoxjonesi females and G. b. major males. We find these data compatible with the predictions of the Kaneshiro hypothesis that asymmetrical sexual isolation involves the preferential mating of females of the derived species with males of the species that have retained primitive character states.

Original languageEnglish
Pages (from-to)192-196
Number of pages5
JournalJournal of Heredity
Volume82
Issue number3
DOIs
StatePublished - 1991

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