After 2 years of use, the synthetic pyrethroid fenvalerate failed to control a population of Haematobia irritans exigua from the Mackay district in central coastal Queensland. Dosage mortality tests on the flies indicated a moiety that was 45 x, 29 x and > 1000 x more resistant respectively to fenvalerate, cypermethrin and DDT than a moiety in a reference population of flies which had not been subjected to control by fenvalerate.
No takes yet. Share an insight, caveat, or question.
Schnitzerling et al. (1982) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: