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THE MATING SYSTEM OF THE FIDDLER CRAB, UCA LACTEA (DECAPODA, BRACHYURA, OCYPODIDAE)

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[No significant difference was observed in the size composition of the pairs of Uca lactea mating on the surface and those mating underground. Most crabs did not select their mates by size. The fact that the size of the tips of the male pleopods and that of the female gonopores does not increase after the crabs have reached a carapace width of 14 mm, makes it possible for crabs of different sizes to copulate. Wandering females that were enticed by waving males had a well-developed ovary. However, the ovary of females that mated on the surface could be in various stages of development.

Aucune différence significative n'a été observée dans la composition en taille des couples de Uca lactea s'accouplant à la surface et celles s'accouplant sous terre. La plupart des crabes n'ont pas choisi leurs partenaires en fonction de leur taille. Le fait que la taille des extrémités des pléopodes mâles et celle des gonopores femelles n'augmentent pas après que les crabes ont atteint une largeur de carapace de 14 mm, rend possible la copulation chez des crabes de différentes tailles. Les femelles errantes attirés par les mâles faisant des signaux avaient invariablement un ovaire bien développé. Cependant, l'ovaire des femelles s'étant accouplées en surface, pouvait être à divers stades de développement., No significant difference was observed in the size composition of the pairs of Uca lactea mating on the surface and those mating underground. Most crabs did not select their mates by size. The fact that the size of the tips of the male pleopods and that of the female gonopores does not increase after the crabs have reached a carapace width of 14 mm, makes it possible for crabs of different sizes to copulate. Wandering females that were enticed by waving males had a well-developed ovary. However, the ovary of females that mated on the surface could be in various stages of development.

Aucune différence significative n'a été observée dans la composition en taille des couples de Uca lactea s'accouplant à la surface et celles s'accouplant sous terre. La plupart des crabes n'ont pas choisi leurs partenaires en fonction de leur taille. Le fait que la taille des extrémités des pléopodes mâles et celle des gonopores femelles n'augmentent pas après que les crabes ont atteint une largeur de carapace de 14 mm, rend possible la copulation chez des crabes de différentes tailles. Les femelles errantes attirés par les mâles faisant des signaux avaient invariablement un ovaire bien développé. Cependant, l'ovaire des femelles s'étant accouplées en surface, pouvait être à divers stades de développement.]

Affiliations: 1: Aitsu Marine Biological Station, Matsushima-cho, Amakusa-gun, Kumamoto 861-6102, Japan

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/content/journals/10.1163/156854001300104471
2001-04-01
2016-09-28

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