Abstract
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Highlights
The external coloration of organisms plays an important role in biological functions, such as adaptation to the environment, reproduction and speciation
Since many frog species in Japan inhabit and breed in or near rice fields, which are located in close proximity to human habitations, color variations during the tadpole stage are discovered by people who send the information to researchers at universities, aquariums and zoos
The albino morph of the green frog Rhacophus arboreus differs in coloration: the skin of albino adults is normally green
Summary
The external coloration of organisms plays an important role in biological functions, such as adaptation to the environment, reproduction and speciation. Frogs have advantages for the collection of spontaneous variations and mutations in coloration, the information on existing variations has never been compiled, possibly because the frogs in question are not always available for genetic research. This is likely due to the difficulty in breeding and establishing a lineage by accumulating successive generations in the laboratory. In this regard, the Amphibian Research Center of Hiroshima University has been a unique and successful facility for maintaining the genetic lineages of amphibians collected from the wild over the past 50 years. I present the color variations and mutations in Japanese frogs and the results of our genetic studies
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