Frog decline, frog malformations, and a comparison of frog and human health


  • M. Michael Cohen Jr.

    Corresponding author
    1. Departments of Oral and Maxillofacial Sciences, Pediatrics, Community Health and Epidemiology, Health Services Administration, and Sociology and Social Anthropology, Dalhousie University, Halifax, Nova Scotia, Canada
    • Dalhousie University, Halifax, Nova Scotia, Canada B3H 3J5.
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The decline in frog populations and the increase in the frequency of frog malformations are discussed. Topics considered for analysis include chytridiomycosis, retinoids, UV-B radiation, chemical contaminants, environmental threats, introduced invasive species and predation, unsustainable use, and enigmatic decline. Care must be taken to distinguish between hypotheses, laboratory experiments, and the findings in feral frog populations. Clearly, the causes of population decline and malformations are heterogeneous. The subject of frogs and humans is addressed under three subheadings: the importance of frogs to human societies, medical implications of frog studies, and a comparison of frog and human disease factors. © 2001 Wiley-Liss, Inc.