Pesticide Induced Physiological and Behavioural Changes in an Estuarine Teleost Therapon jarbua (Forsk)

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Date
1978
Authors
LINGARAJA, T
VENUGOPALAN, V. K.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India) Cochin
Abstract
Static bioassays were conducted with pesticides likePP'-DDT,Dimethoate(Rogor)* and Carbaryl (Sevin) to determine the median lethal concentrations (LC60) on an estuarine teleost Therapon jarbua (Forsk). The respiration rates of fishes exposed to pesticides, as well as' those of controls were determined. Respiration abnormalities were noticed in treated fishes. The metabolic rates are generally higher in treated fishes than in the controls. The behaviour of fishes exposed to LC26 (96h) concentrations of pesticides is discussed. Estuarine fishes appear to be more sensitive and susceptible to pesticides than fresh water fishes. The pesticides affect the locomotory and swimming behaviour of fishes. Loss in weight of fishes exposed to LC60 (96 h) concentration of pesticides was also estimated. The present report gives a comprehensive account of the toxic nature of these pesticides to fishes.
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Keywords
Pesticide Induced,Physiological ,Behavioural Changes,Estuarine Teleost ,Therapon jarbua ,(Forsk)
Citation
Fishery Tech 15 (2):115-119
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