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Study of the haematological changes of Channa punctatus (Bloch) exposed to lethal and sublethal concentration of biocide “furadan”.

Ravi Kumara*, Ashok Kumarb & Dheeraj Kumar Singhc
a*Saran Academy, Chapra, Bihar, India.
bDept. of Zoology and Industrial Fish & Fisheries, Ganga Singh College, J.P. University, Chapra, Bihar, India.
cD.B.S.D. Degree College, Rampur, Kadna, Garkha, Saran
Received 22nd September, 2013; Revised 26th October, 2013

Abstract : Blood takes part directly or indirectly in almost all the activities of the vertebrates and hence fish cannot be an exception to it & therefore the blood is regarded as a good indicator of stress condition. In this study the fish Channa punctatus (both male & female) were exposed to lethal concentration (60mg/l) and sublethal concentrations (3.0&075mg/ l) of furadan at selected days of exposure in which the haemoglobin content, haematocrit value, TEC (Total erythrocyte count) gradually decreased in both male & female fish and TLC (Total Leucocyte Count) increased, while the Hb content, Ht value, TEC & TLC were more in females than the males in normal conditions during maturing (February to April) and mature or spawning (June to August) phases.

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