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Protogynous Sex Change in the Reed Frog Hyperolius viridiflavus
T. U. Grafe and K. E. Linsenmair
Vol. 1989, No. 4 (Dec. 27, 1989), pp. 1024-1029
Stable URL: http://www.jstor.org/stable/1445989
Page Count: 6
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Observations on captive reed frogs Hyperolius viridiflavus ommatostictus showed that seven out of 24 females changed into males. Sex change occurred without any hormone treatment and resulted in completely functional males. The adaptive value is discussed in terms of maximizing life-time reproductive success. Hyperolius r. ommatostictus is the first amphibian known to show functional sex reversal.