Short-term and long-term survival studies in Rana tigrina tadpoles with reference to methyl parathion toxicity.
J Environ Biol
;
2001 Oct; 22(4): 267-71
Article
in English
| IMSEAR
| ID: sea-113829
ABSTRACT
Toxicity of methyl parathion was studied on survival of Rana tigrina tadpoles. The LC50 values for short-term (upto 96 h) and long term studies (hatching to froglet) were determined. The LC50 values for 96 h and the total larval period were 4.36 and 1.30 ppm respectively. The toxicity of methyl parathion enchanced in relation to increase in concentration and duration. Teratological defects such as scoliosis and failure in emergence of fore limb were noticed. Safe levels were calculated for short-term (0.1 ppm) and long-term (0.03 ppm) studies. The present work stresses the neccessity of long term study especially for the developing amphibians.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Ranidae
/
Water Pollutants, Chemical
/
Survival Analysis
/
Environmental Exposure
/
Insecticides
/
Larva
/
Lethal Dose 50
/
Animals
/
Methyl Parathion
Language:
English
Journal:
J Environ Biol
Year:
2001
Type:
Article
Similar
MEDLINE
...
LILACS
LIS