北九州市山田緑地で見られた過剰肢をもつヤマアカガエルRana ornativentrisについて

抄録

Eight frogs, Rana ornativentris, with supernumerary forelimbs were found in June 1995 at two sites in a hilly area, Yamada Greenery Area, in Kitakyushu City, Fukuoka Prefecture, Japan. Seven of them were tadpoles just before completion of metamorphosis and they were found in 59 tadpoles collected from one site. Therefore the occurrence ratio of the individuals with supernumerary limbs was 11.9%. The other collected at another site was a young frog just after metamorphosis. The study on the cause of this abnormality is needed.