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image of Crustaceana

The pedunculate spermatophore is characteristic of the Anomura, and the Paguroidea in particular. It has a sperm-filled ampulla which is composed of two valves joined at a conspicuous lateral ridge. This lateral ridge is a thickening of the spermatophore wall but also a discontinuity between the wall morphology of each valve. Within the hermit crabs (Paguroidea) the spermatophore wall morphology can be divided into three categories: fibrillar, heterogeneously granular and homogeneously granular. The fibrillar form is found in representatives from the families Coenobitidae and Diogenidae, with the exception of those of the genus Clibanarius which have the heterogeneously granular form, while the homogeneously granular form has been recorded from members of the family Paguridae. A single galatheid crab, Allogalathea elegans is shown to have a homogeneously granular spermatophore wall and ridge like this latter group of paguroids. These differences in spermatophore wall and ridge morphology between the various taxa in the Anomura appear to be phylogenetically significant.

Le spermatophore pedoncule est caracteristique des Anomoures, et des Paguroidea en particulier. Il presente une ampoule contenant les spermatozo des, formee de deux valves unies par une crete laterale bien visible. Cette crete laterale est un epaississement de la paroi du spermatophore mais constitue egalement une discontinuite entre la morphologie de la paroi de chaque valve. Chez les pagures (Paguroidea), la morphologie de la paroi du spermatophore peut etre divisee en trois categories: fibrillaire, granulaire heterogene et granulaire homogene. On rencontre la forme fibrillaire chez les representants des familles Coenobitidae et Diogenidae, avec pour exception le genre Clibanarius qui presente la forme granulaire heterogene tandis que la forme granulaire homogene a ete observee chez les membres de la famille des Paguridae. Seul, un galatheide, Allogalathea elegans, presente une paroi du spermatophore de type granulaire homogene et une crete identique a ce dernier groupe de paguro des. Ces differences observees dans la morphologie de la paroi du spermatophore et de la crete entre les differents taxons semblent etre phylogenetiquement significatives.


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