EFFECT OF PARTHENIUM HYSTEROPHORUS L. LEAVES EXTRACT ON MRIGAL, CIRRHINUS MRIGALA

Jagtap H. S.

Abstract


The studies were conducted to assess the toxic activity of Parthenium hysterophorus L. (Family Apocynaceae) leaves extract on Mrigal, Cirrihinus
mrigal, fry and fingerlings. Different doses were tried 0.5ml/l, 1ml/l, 1.5ml/l, 2ml/l, 3ml/l, 5ml/l, 10ml/l and 15ml/l. The studies were focused on
the determination of lethal concentrations (LC and LC ). LC in fry (1.5ml/l) and fingerlings (2ml/l). LC in fry (2ml/l) and fingerlings (3ml/l). 50 100 50 100
Based on the 96 h lethal concentration, Parthenium hysterophorus showed the strongest piscicidal activity. During exposure, fish exhibited
discoloration, gulping for air, erratic swimming, loss of reflexes, slow opercular movement and ultimately settling at the bottom motionless.
Dissolved oxygen of experimental water decrease when liquid extract concentration increases.


Keywords


Parthenium, mrigal, lethal, oxygen, Lethal concentration.

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