Extensive Interspecific Genetic Compatibility in the New World Killifish Genus Cyprinodon
Turner BJ and Liu RK. 1977. Extensive Interspecific Genetic Compatibility in the New World Killifish Genus Cyprinodon. Copeia. 1977(2):259-269
Interspecific hybrids in the oviparous killifish genus Cyprinodon have been produced in the laboratory from 14 different combinations (and 4 reciprocals) among 9 species. Hybrids were reared from all interspecific combinations from which fertilized ova were obtained. For the most part they were approximately intermediate in the expression of divergent parental morphological features but not in reproductive behavior. Although the majority of the hybrids were fertile, a few cases of male sterility or absence were recorded. Bispecific hybrids were used to produce a few trispecific and one fertile tetraspecific hybrid. The ease with which morphologically and behaviorally divergent Cyprinodon species are hybridized in the laboratory suggests that the widely accepted correlation between hybridization potential and phylogenetic relationship may not hold for Cyprinodon as well [as for] some other genera (eg., Lepomis, Xipholphorus) of highly infertile yet morphologically distinct fish species.
- Type
- Journal Article
- Authors
- Turner, Bruce; Liu, Robert
- Units
- DEVA , SODN
- Keywords
- Allopatric, Arizona, CA, California, Death Valley National Park, divergence, Genetic Studies, Hybridization, Imperial County, NV, Organ Pipe Cactus National Monument, pupfish (Cyprinodon), Quitobaquito Springs, Salton Sea, Saratoga Springs, Taxa Links To Datasets, Taxa Links To References