|
KMID : 0613820090190101410
|
|
Journal of Life Science
2009 Volume.19 No. 10 p.1410 ~ p.1416
|
|
|
Effect of Turbid Water on Fishes in the Streams of Imha Reservoir
|
|
Yu Sam-Hwan
Kim Jeong-Sook
Shin Myung-Ja
Lee Jong-Eun
Seo Eul-Won
|
|
|
Abstract
|
|
|
|
The present study aims to examine the effect of turbid water on fishes in streams which branch into a turbid water area (Yeongyang-gun) and a non-turbid water area (Cheongsong-gun), and finally flow into the Imha reservoir. In a comparison of water quality, the chemical status of the water showed higher pH, DO and SS in the turbid water area than in the non-turbid water area. Also, high density of clay minerals such as vermiculite (Ⅴ) and illite (Ⅰ), which is from clay mineral leakage during rainfall, was detected in turbid water, resulting in an increase of turbidity. Fishes inhabiting the turbid water showed irregular spaces in gill lamella, cell separation, edema, and clubbing in epithelial tissues. Also, the gill surface showed roughness and plenty of muddy debris substances inside the gills. The Bowman’s space was expanded because of contraction of the glomerulus in the Bowman’s space of the kidney tissues. Antioxidant enzymes such as SOD, CAT, GPX, and GST showed higher activities in the specific tissues, muscles and kidney, of fishes living in turbid water than in the non-turbid area. We suggested that; first, the antioxidant activities were increased due to removal of harmful radicals generated in fish bodies in the turbid water area, second, long-time exposure of these histological changes in the tissues might have induced secondary lesion accompanying the inaccurate physiological constancy of fishes.
|
|
|
KEYWORD
|
|
|
Imha reservoir, turbid water, water quality, antioxidant enzymes, heavy metal
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|