Hybridization between the Southwestern toad, B. microscaphus, and Woodhouse's toad, B. woodhousei, was investigated in central Arizona. Allopatric populations of these two taxa differed significantly in their morphology. Five regions of sympatry were identified, and morphological intermediates (hybrids) were present at three of these sites. Based on morphology and male advertisement calls, back-crossing may have occurred in at least one of the hybrid zones. Aquatic habitats have been altered by man in all zones of sympatry and B. woodhousei may have only recently arrived in these regions. It is suggested that Moore's (1977) 'ephemeral-zone' hypothesis may account for hybridization between these distinct taxa.
The Journal of Herpetology publishes original research articles on the biology of amphibians and reptiles, with emphasis on behavior, conservation, ecology, evolution, morphology, physiology, and systematics. The purpose of the Journal is to increase knowledge about amphibians and reptiles and promote communication among herpetologists and other biologists interested in amphibians and reptiles.
The Society for the Study of Amphibians and Reptiles (SSAR) is a not-for-profit organization established to advance research, conservation, and education concerning amphibians and reptiles. It was founded in 1958 and is currently the largest international herpetological society. The Society meets annually, usually in joint venues with other herpetological societies. Members receive the Society's primary research publication, the Journal of Herpetology, and its news-journal, Herpetological Review. SSAR also publishes book length monographs, facsimiles, and a catalogue of American reptiles and amphibians. Grant programs support student research. Conservation and Education committees have extensive outreach components. In order to promote publication of research on amphibians and reptiles, the SSAR has an editorial assistance program for herpetologists who do not have English as their first language.
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