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Intersexualité Et Glande Androgène Chez Orconectes Limosus (Rafinesque)

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image of Crustaceana

A female specimen of the crayfish Orconectes limosus (Rafinesque), in which the right second pleopod has the shape typical of that of the male, is here discussed. It proves to have no androgenous gland. The presence of one external male sexual character in a female not provided with an androgenous gland is not in agreement with the present theory of sexuality in the Crustacea. A study of the androgenous gland of Orconectes limosus reveals that this organ is supplied by a plexus of arterial capillaries. In small Decapoda, such as Hippolyte or Atyaephyra, the androgenous gland is very poorly provided with such capillaries. The blood supply, therefore, is correlated with the volume of this organ.

Affiliations: 1: Laboratoire de Biologie Animale, Faculté des Sciences, Université de Dijon, France


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