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ISSN: 2332-2608

Journal of Fisheries & Livestock Production
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Research Article

Histopathological and Behavioral Changes in Oreochromis sp. after Exposure to Different Salinities

Marina Hassan1*, Zakariah MI2, Wahab W2, Muhammad SD1, Idris N1 and Jasmani S2

1Department of Aquaculture Science, Faculty of Fisheries and Aqua-Industry, University Malaysia Terengganu, Terengganu, Malaysia

2Institute of Tropical Aquaculture, University Malaysia Terengganu, Terengganu, Malaysia

*Corresponding Author:
Marina Hassan
Department of Aquaculture Science
Faculty of Fisheries and Aqua-Industry
University Malaysia Terengganu
Terengganu, Malaysia
Tel: +609 668 3205
E-mail: [email protected]

Received Date: February 28, 2013; Accepted Date: March 02, 2013; Published Date: March 25, 2013

Citation: Hassan M, Zakariah MI, Wahab W, Muhammad SD, Idris N, et al. (2013) Histopathological and Behavioral Changes in Oreochromis sp. after Exposure to Different Salinities. J Fisheries Livest Prod 1:103. doi:10.4172/2332-2608.1000103

Copyright: © 2013 Hassan M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

A study was carried out in the laboratory on the adaptability and tolerance of the Tilapia fingerlings, Oreochromis sp. to different salinities. This data has provided important information on the possibility of its culture in marine environment or brackish water. We investigated the histopathological changes and behavioral changes of the fish challenged with four different salinity treatments including a control (0, 5, 20 and 35 ppt) for 96 hours. The Tilapia fingerlings with the size 10-14 cm total length acclimated successfully to freshwater before introduced to hyper-saline environment. The results showed that all fish survive in 0 ppt and 5 ppt, while 75% death in 20 ppt and 100% death in 35 ppt. The mortality rate was increased with increased of salinity. Fish exposed to different salinities exhibited clinical signs agitated behavior, respiratory distress, abnormal nervous behavior and death were recorded. Degeneration, necrosis, hemorrhage and hyperplasia of kidney and gills were observed as major histopathological changes.

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