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The toxicity of some insecticides to first‐instar nymphs of the desert locust, Schistocerca gregaria (Forsk.)
Author(s) -
MacCUAIG R. D.,
YEATES MAUREEN N. D. B.
Publication year - 1964
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1964.tb01205.x
Subject(s) - schistocerca , diazinon , desert locust , dieldrin , biology , nymph , toxicology , heptachlor , toxicity , chlordane , parathion , instar , locust , pesticide , botany , agronomy , larva , medicine
SUMMARY The toxicities of γ‐BHC, diazinon, dieldrin, DNOC, heptachlor and parathion to first‐instar hoppers of the desert locust were determined. Parathion was the most toxic followed in descending order of toxicity by dieldrin, γ‐BHC, heptachlor, diazinon and DNOC. Results with diazinon showed a non‐linearity of the probit/log. dose regression line. Changing the post‐treatment temperature from 26 to 31° C. had no effect on the final toxicity of the insecticides, excepting that of dieldrin which was 1·48 times as toxic at the higher temperature.