Abstract
Testes and vasa deferentia are parts of the male reproductive system of decapod crustaceans. Both organs show morphological differences among decapod species in terms of anatomical and histological patterns reflecting the diversity of this group. Describing these features may assist in systematics, phylogenetics, and studies of reproductive behavior, especially for species of commercial interest, such as Macrobrachium carcinus, a native American species that, unusually for this genus, has no precopulation courting behavior. This study aims to describe the reproductive morphology and spermatogenesis of the male freshwater prawn M. carcinus. The male reproductive system of this species consisted of lobed testes connected to the vasa deferentia. The testis of M. carcinus was divided into several lobules. Each lobule was formed by a cluster of germ cells surrounded by connective tissue and nurse cells. This microscopic anatomy and histology of the testicular histoarchitecture has been described for many species of Decapoda and may represent a derived design of the testes. Unlike that in other decapod species, spermatogenesis proceeds in short transitory phases that produce spermatozoa at high concentrations and frequencies, corrobo...Continue Reading
References
Jan 1, 1992·European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes·L HanssonB Ahrén
Jan 1, 1991·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·I Quintero-HunterM Muscato
Jan 1, 1970·Scandinavian Journal of Clinical and Laboratory Investigation·P Astrup
Jan 1, 1984·Tissue & Cell·W J Dougherty, P A Sandifer
Jul 1, 1983·Journal of Invertebrate Pathology·D V LightnerT A Bell
Jan 1, 1993·Genetica·D Reznick
May 27, 2008·Molecular Phylogenetics and Evolution·L M TsangK H Chu
Apr 4, 2009·Tissue & Cell·C G SimeóG Rotllant
Sep 1, 1947·Journal of Morphology·L E CRONIN
Feb 10, 2012·Journal of Morphology·Guiomar RotllantEnric Ribes
Oct 1, 1993·The Biological Bulletin·R T Bauer, L J Min
Jun 1, 1984·Journal of Morphology·Samuel R Haley
Aug 18, 2018·Journal of Morphology·Tianyi FengStephen Johnston
Sep 8, 2018·Journal of Morphology·Michel Comeau, Kadra Benhalima