Morphology of the male reproductive system and seasonality in reproduction in the freshwater crab Arcithelphusa cochleariformis (Brachyura: Gecarcinucidae)
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Abstract
ABSTRACT This study detailed the histomorphology of the male reproductive system and seasonality in the reproduction of a recently described genus and species of freshwater crab Arcithelphusa cochleariformis. Results indicated that the testis and vas deferens underwent correlative changes in accord with the active, inactive and revival phases of spermatogenesis. The spermatogenic activity was at its peak during June evinced from large fully extended acini with full package of mature spermatozoa and low during September–February with decreased acinar dimensions, pycnotic germ cells and residual sperms. Seasonal cyclicity was also observed in the thickness of epithelium, muscle layer, diameter of lumen and the amount of luminal contents of the vas deferens. In June, the anterior and middle vas deferenswere filled with secretions and spermatophores.By September, ruptured spermatophores with freely dispersed pycnotic spermatozoa were perceptible in the anterior and middle vas deferens and lysed spermatophoric debris in posterior vas deferens.
期刊介绍：
Marine and Freshwater Behaviour and Physiology is devoted to the publication of papers covering field and laboratory research into all aspects of the behaviour and physiology of all marine and freshwater animals within the contexts of ecology, evolution and conservation.
As the living resources of the world’s oceans, rivers and lakes are attracting increasing attention as food sources for humans and for their role in global ecology, the journal will also publish the results of research in the areas of fisheries biology and technology where the behaviour and physiology described have clear links to the contexts mentioned above.
The journal will accept for publication Research Articles, Reviews, Rapid Communications and Technical Notes (see Instructions for authors for details). In addition, Editorials, Opinions and Book Reviews (invited and suggested) will also occasionally be published. Suggestions to the Editor-In-Chief for Special Issues are encouraged and will be considered on an ad hoc basis.
With the goal of supporting early career researchers, the journal particularly invites submissions from graduate students and post-doctoral researchers. In addition to recognising the time constraints and logistical limitations their research often faces, and their particular need for a prompt review process, accepted articles by such researchers will be given prominence within the journal (see Instructions for authors for details).
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