US EPA

5190822 

Journal Article 

Toxicity screening of insecticide residues in soil using nontarget microarthropod species 

Pramanik, R; Sarkar, K; Joy, VC 

1998 

Yes 

Journal of Environmental Biology
ISSN: 0254-8704
EISSN: 2394-0379 

Triveni Enterprises 

19 

2 

131-139 

English 

WOS:000072319900007 

BIOSIS COPYRIGHT: BIOL ABS. Short term direct and residual toxicity of 5 different insecticides in soil medium were compared using laboratory-reared saprotrophic microarthropod species. Based on the direct toxicity of highest recommended agricultural doses on several species, the insecticides were in the order heptachlor and gt; endosulfan and gt; methyl parathion and gt; phosphamidon and gt; dichlorvos. Detailed LD50 (24 hours) studies and probit analysis showed that Cyphoderus javanus (Collembola) was the most sensitive species followed by Archeqozetes longisetosus (Cryptostigmata). Heptachlor and endosulfan had prolonged residual toxicity for more than 30 days on several soil arthropods including acarines with hard exoskeleton. On the other hand, persistence of methyl parathion, phosphamidon and dichlorvos declined sharply within 7 days to produce only negligible ill effect on even highly sensitive species. 

insecticides; soil microarthropods; LD50; residual toxicity; bioindicator