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K. Pazhanisamy ¹, N. Indra ²

Affiliations
1 Department of Zoology, Govt. Arts College, Ariyalur-621 713, Tamil Nadu, IN
2 Department of Zoology, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN

Abstract

The freshwater fish, Labeo rohita, treated with two different sublethal concentrations (1/10 and 1/3 of the 96 hr LC₅₀) of arsenic, have revealed a significant decrease in the succinic dehydrogenase (SDH) activity in liver and muscle tissues throughout the period of 28 days of exposure. With the decline of SDH activity, the metabolic pathway has turned anaerobic to meet the increased energy demands during arsenic stress.

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K. Pazhanisamy ¹, N. Indra ²

Affiliations
1 Department of Zoology, Govt. Arts College, Ariyalur-621 713, Tamil Nadu, IN
2 Department of Zoology, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN

Abstract

The biochemical component like glycogen was estimated quantitatively in the tissues of liver and kidney of control and arsenic treated fish. The experimental fish were exposed to lower and higher sublethal concentrations (one-tenth and one-third of the 96 hr LC₅₀ value) of arsenic for a period of 7, 14, 21 and 28 days. In both the tissues a significant reduction in glycogen level has been noticed. Maximum reduction was observed on the 28^th day of exposure.

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K. Pazhanisamy ¹, N. Indra ²

Affiliations
1 Department of Zoology, Govt. Arts College, Ariyalur-621 713, Tamil Nadu, IN
2 Department of Zoology, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN

Abstract

The toxic effects of two different sublethal concentrations (one-third and one-tenth of the 96 hrs LC₅₀ value) of arsenic on fresh water fish, Labeo rohita have revealed significant changes in the tissues like liver and muscle of the fish. The fish exposed to the lower and higher sublethal concentration of arsenic for 7, 14, 21 and 28 days has showed reduction in the protein content in liver and muscle tissues.

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