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Toxins 2009, 1(1), 14-24; doi:10.3390/toxins1010014
Article

Intersex Tilapia (Oreochromis spp.) from a Contaminated River in Taiwan: A Case Study

1,*  and 2
1 Department of Aquaculture, National Pingtung University of Science and Technology, Nei Pu, Pingtung, 91207, Taiwan 2 Department of Veterinary Medicine and Southern Taiwan Aquatic Animal Disease Diagnostic Center, National Pingtung University of Science and Technology, Nei Pu, Pingtung, 91207, Taiwan
* Author to whom correspondence should be addressed.
Received: 24 July 2009 / Revised: 7 August 2009 / Accepted: 11 August 2009 / Published: 13 August 2009
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Abstract

River pollution in Taiwan is rather serious, but so far there have been no reports of fish intersex problems. This report reveals that 50% male tilapia in the Era-Jiin River of southern Taiwan were found to be feminized in an October 8, 1994 collection from station EJ-2 of this river. After discounting all other possible causative factors, and correlating with endocrine disrupting chemicals found in this river, we suggest that there is a great possibility that the occurrence of intersex tilapia was caused by these chemicals. The above finding suggests that greater attention needs to be given to endocrine disrupting chemicals problems.
Keywords: tilapia; morphological deformity; biomarker; indicator; river pollution; endocrine disrupting chemicals; intersex tilapia; morphological deformity; biomarker; indicator; river pollution; endocrine disrupting chemicals; intersex
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Sun, P.L.; Tsai, S.-S. Intersex Tilapia (Oreochromis spp.) from a Contaminated River in Taiwan: A Case Study. Toxins 2009, 1, 14-24.

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