SEASONAL CHANGES OF THE TESTES IN THE MARSH FROGE RANA RIDIBUNDA PALLAS, 1771 | ||
| Bulletin of the Iraq Natural History Museum | ||
| Article 1, Volume 9, Issue 4, December 2002, Pages 13-18 | ||
| Author | ||
| Alwan J. El-Wailly | ||
| Abstract | ||
| ABSTRACT Samples of marsh frog included 148 sexually mature males were collected in Baghdad from December 1992 to December 1993 to December 1993. The testis weight was expressed as percentage of the body weight. The percent mean weights of testis were at their minimal weight (0.255%) during April (spawning period). Testis weight has increased until reached its greatest average weight in August (0.785%). During the winter there is a slight decrease in weight with a more obvious fall at the spawning months. From the results obtained from the present work on Rana ridibunda and from the observations on annual cycle in testis weight of some temperate zone anurans we notice that testes tend to be lowest after spawning and the testis cycle seems to be correlated with geographic range of distribution. | ||
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