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Quarterly Journal of Microscopical Science, Vol s3-101, 37-38, Copyright © 1960 by Company of Biologists

An Occurrence of Hermaphroditism in Rana Catesbiana

W. KEITH O'STEEN 1

1 Department of Anatomy, University of Texas (Medical Branch), Galveston, Texas, U.S.A.

Hermaphroditism is rather uncommon in the bullfrog, Rana catesbiana. A case is described here. Among the features of the unusual urogenital system were male secondary sexual characters (large tympanic membrane, vocal sacs, nuptial pads), testicular tissue with developing and mature male gametes, and accessory ducts (vasa efferentia, seminal vesicles). Müllerian ducts and large ovarian masses containing oöcytes and mature ova were also present. Oöcytes were observed in the lumina of seminiferous tubules.






© The Company of Biologists Ltd 1960