Susceptibility to sulfuryl fluoride and lack of cross-resistance to phosphine in developmental stages of the red flour beetle, Tribolium castaneum (Coleoptera: Tenebrionidae).

摘要: BACKGROUND Our aim was to ascertain the potential of sulfuryl fluoride (SF) as an alternative fumigant manage phosphine-resistant pests. We tested susceptibility all life stages red flour beetle, Tribolium castaneum (Herbst), SF and assessed presence cross-resistance this in strains species. RESULTS Analysis dose–response data indicated that egg stage most tolerant under a 48 h exposure period. At LC50, eggs were 29 times more than other immature adults, required relatively high concentration 48.2 mg L−1 for complete mortality. No significant differences tolerance observed among three larval instars, pupae these controlled at low 1.32 L−1. Phosphine-resistant did not show SF. CONCLUSION research concluded current maximum registered rate SF, 1500 gh m−3, is adequate control post-embryonic T. over fumigation period, but it will fail achieve mortality eggs, indicating risk some survival short As there no insects, play key role managing phosphine resistance stored-grain insect © 2014 Commonwealth Australia. Pest Management Science Society Chemical Industry