Effect of different concentration of cypermethrin on gill of Capoeta damascina (Valenciennes, 1842)

Authors

Eagderi, Soheil

Javanshir, Arash

Poorbagher, Hadi

Safavi, Fahimeh

Abstract:

The main idea of this research was to evaluat the effects of concentration and time of exposure the Cypermethrin Toxin on the gill tissue of Black Fish (Capoeta damascina). In order to do this research, the Black Fishes that where used gathered from Kordan River of Karaj and their average weight was 150 gr and their average length was 12 cm. the fish used in 4 treatments (0.25, 0.5, 0.75 mg/lit and a control group) and 3 replication that exposed to lethal doses of Cypermethrin toxin. Sampling of fish gill was conducted in the first, 5th and 10th day of the experiment. In this study injuries such as hyperplasia of gill secondary lamella apical cells ،epithelial lifting secondary lamella، mucous cell hyperplasia in primary lamella, fusion, shortening the secondary lamella، and aneurism were observed with different severity in various treatments. The results showed that with increasing toxin concentration and time of exposure fishes to the toxic, more injured fishes gill tissue.

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