Effect of Endosulfan and 2,4-Dichlorophenoxy Acetic Acid on the Growth and Gonadal Development of Freshwater Prawn Macrobrachium lamarrei
Effect of Endosulfan and 2,4-Dichlorophenoxy Acetic Acid on the Growth and Gonadal Development of Freshwater Prawn Macrobrachium lamarrei
Date
2006
Authors
Singh, Shalini
Ghandrasekaran, V.S.
Singh, U.P.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
The freshwater prawn Macrobrachium lamarni was subjected to acute (96 hr) static
bioassay toxicity test with the pesticide endosulfan and the herbicide, 2,4-dichlorophenoxy
acetic acid and the LC
g, values were 0.009 ppm and 0.5 ppm respectively. When prawns
were exposed for 30 days, under static condition, to five sub-lethal concentrations, viz., 0.008,
0.007, 0.006, 0.005 and 0.004 ppm of endosulfan and 0.4, 0.3, 0.2, 0.1 and 0.05 ppm of 2,4-
diclorophenoxy acetic acid, the growth and the gonado-somatic index (GSI) were found to
decrease in direct relation to increase in the concentration of the toxicants. However, there
was an increase in growth at lower concentrations of endosulfan and acceleration in gonadal
development at low concentration of 2,4-dichlorophenoxy acetic acid
Description
Keywords
Pesticide, herbicide, toxicity, Macrobrachium lamarrei
Citation
Fishery Technology 43(1):73-78