Phytoparasitica (2001) 29, p. S62 (Nayak et al.)

M.K. Nayak and P.J. Collins (2001)
High level phosphine resistance in Liposcelis bostrychophila
Phytoparasitica 29 (Suppl.), S62-S62
International Conference on Controlled Atmosphere and Fumigation in Stored Products (Session 1), October 29-November 3, 2000, Fresno, California, USA (not presented at Conference)
Abstract: In recent years psocids have become a major pest problem in central storages and grain export terminals throughout Australia. Phosphine has failed to control psocid populations and reinfestation is common. Resistance was confirmed when samples of Liposcelis bostrychophila collected from infestations with a history of control failures, survived fumigation protocols in the laboratory. The level of resistance shown by this psocid is similar to that observed in highly resistant strains of Rhyzopertha dominica reported from Australia. In addition, results from experiments aimed at measuring time to population extinction, using a range of concentrations and exposure times, indicated that delayed hatching of eggs in resistant strains may contribute to their survival under fumigation. The development of this resistance in Australia has required that new protocols be developed for disinfestation of grain at central storages and export terminals.
Database assignments for author(s): Patrick J. Collins, Manoj K. Nayak

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Liposcelis bostrychophila