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Morphology and function of the copulatory system in freshwater crabs of the genus Potamon

✍ Scribed by Dirk Brandis; Volker Storch; Michael Türkay

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
384 KB
Volume
239
Category
Article
ISSN
0362-2525

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✦ Synopsis

To understand the reproductive processes of freshwater crabs of the genus Potamon, we examined the first and second gonopod and the gonoducts of the female by histological methods. The gonopods are highly modified compared to those of other brachyuran crabs. In particular, the second gonopod is unusually long and has a special morphology, ending in a long sclerotized tube. Suggestions for the function of both gonopods and their different parts are presented. Tubulation of the first and second gonopod is observed. Rosette glands, which are abundant in the subterminal joint of the first gonopod, are connected to the sperm channel by cuticular pores. In females, the chitinous parts of the inner vulva may prove to have a more constant morphology than the external flexible structures.

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