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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2017, Vol. 5, Issue 4, Part B

Impact of Methoprene on Spermatogenesis of the Freshwater Crab Travancoriana schirnerae


Author(s): Latha Nadkandi Padmanabhan, Sudha Devi Arath Raghavan and Aswani Ayanath

Abstract: This study investigated the impact of methoprene, a juvenile hormone analog, on spermatogenesis of the freshwater crab Travancoriana schirnerae, abundant in the wetlands of Wayanad. Administration of sublethal dose of methoprene demonstrated reduced gonadosomatic indices and considerable degree of changes in the morphology and histoanatomy of the testis leading to partial or total suppression of spermatogenesis during active phase. Histopathological changes include shrinkage and vacuolization of acini, disintegration of basal lamina and germinal epithelium, deformation, disarray and lower chromatin content of primary gonia and a reduction in number of germ cells. Decline in mature sperm concentration, abnormal morphology and irregular arrangement of sperms was also observed in experimental crabs, in contrast to the fully laden acini with mature spermatozoa arranged in circles of control crabs.

Pages: 138-146  |  443 Views  16 Downloads

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How to cite this article:
Latha Nadkandi Padmanabhan, Sudha Devi Arath Raghavan, Aswani Ayanath. Impact of Methoprene on Spermatogenesis of the Freshwater Crab Travancoriana schirnerae. Int J Fish Aquat Stud 2017;5(4):138-146.
International Journal of Fisheries and Aquatic Studies