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ULTRASTRUCTURE OF THE SPERM AND SPERMATOPHORES OF THE GOLDEN CRAB GERYON FENNERI AND A CLOSELY RELATED SPECIES, THE RED CRAB G. QUINQUEDENS, FROM THE EASTERN GULF OF MEXICO

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image of Journal of Crustacean Biology

ABSTRACT The sperm of species of Geryon are typical of brachyurans in having a complex acrosome, a membranous lamellar complex, uncondensed chromatin in the nucleus, and nuclear arms or spikes of varying lengths. There are no microtubular elements in the arms. The spermatophores are ellipsoidal or round and contain varying numbers of sperm. The wall of each spermatophore is two-layered and fairly impermeable to fixatives. Globules of seminal fluid surround the spermatophores in the vasa deferentia.

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/content/journals/10.1163/193724088x00215
1988-01-01
2017-01-19

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