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:: Volume 10, Issue 1 (2011) ::
IJFS 2011, 10 Back to browse issues page
The effects of heavy metals exposure on reproductive systems of cyprinid fish from Kor River
M. Ebrahimi * , M. Taherianfard
, mebrahimi14 @gmail.com
Abstract:   (22986 Views)

  The Kor River (Fars province) was divided into three parts and water and fish specimens were collected monthly and the concentrations of four heavy metals were determined using the Induction Coupled Plasma Method. As middle sampling zone was the main entrance and discharges of industries into the River, the concentrations of heavy metals in tissue of fish from this zone were significantly higher (p < 0.05) than those from the other two sampling zones, whereas no significant differences (p > 0.05) were detected between the two sexes and species. Maximum concentrations of lead, mercury and cadmium in fish tissues were higher than the permissible levels for human consumption. Significant changes in the concentrations of steroid hormones were also noticed between the middle and two other sampling zones. Also in middle sampling zone, pathological changes in blood cells, liver, and kidneys of fishes were significantly higher. So heavy metals exposure can effectively decrease estrogenic and androgenic secretion in fish. The results confirmed exposure of fishes to heavy metals not only disrupts reproductive hormones’ secretion, but also induces some pathological changes.

Keywords: Exposure, Heavy metals, Hormone, Pathology, Fish, Reproductive system, Kor River
Full-Text [PDF 964 kb]   (15154 Downloads)    
Type of Study: Orginal research papers | Subject: Toxicology
Received: 2011/01/18 | Accepted: 2015/09/13 | Published: 2015/09/13
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Ebrahimi M, Taherianfard M. The effects of heavy metals exposure on reproductive systems of cyprinid fish from Kor River. IJFS 2011; 10 (1) :13-26
URL: http://jifro.ir/article-1-121-en.html


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Volume 10, Issue 1 (2011) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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