Efficacy of Grain Protectants and Phosphine Against Liposcelis bostrychophila, L. entomophila, and L. paeta (Psocoptera: Liposcelidae)

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The effectiveness of8 grain protectants and the fumigant phosphine was tested against Liposcelis bostrychophila Badonnel, L. entomophila (Enderlein), and L. paeta Peamlan. These species are common pests in Asia and have become important pests in the Australian grain-handling system. L. entomophila and L. paeta were tolerant to all protectants tested, whereas only organophosphates were effective against L. bostrychophila. Phosphine was highly effective against all 3species. Asurvey of field populations of L. entomophila and L. bostrychophila suggested that the tolerance to protectant insecticides was a natural phenomenon and not due to resistance. We conclude that of these chemical tactics only phosphine has a place in the management of psocids in general. Organophosphorous grain protectants could be used where L. bostrychophila is prevalent..

Document Type: Research Article

Publication date: October 1, 1998

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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