Document Detail


Inhibition of egg development by phosphine in the cosmopolitan pest of stored products Liposcelis bostrychophila (Psocoptera: Liposcelididae).
MedLine Citation:
PMID:  14620044     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Phosphine-induced delay in development of eggs was investigated as a mechanism of resistance to this fumigant in Liposcelis bostrychophila Badonnel. One-day-old eggs of a susceptible and a strongly resistant strain of L bostrychophila were exposed to a range of phosphine concentrations for 6days at 30 (+/- 1) degrees C and 70 (+/- 2)% RH. Delay in mean hatching period occurred in both susceptible and resistant eggs, although it was more pronounced in the latter. A maximum delay of 2.65 days was recorded for eggs of the susceptible strain at 0.01 mg litre(-1) (the highest concentration at which eggs survived) and 13.39 days for the resistant strain at 1 mg litre(-1) (the highest concentration tested). Delay in egg development time was positively correlated with increasing phosphine concentration. Our results reveal that the most successful strategy to control resistant L bostrychophila is to apply relatively low concentrations of phosphine for extended exposure times (eg 0.05 mg litre(-1) for 16 days) that allow all eggs to hatch to the much less tolerant nymph stage.
Authors:
Manoj K Nayak; Patrick J Collins; Hervoika Pavic; Rosemary A Kopittke
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pest management science     Volume:  59     ISSN:  1526-498X     ISO Abbreviation:  Pest Manag. Sci.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-17     Completed Date:  2004-03-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100898744     Medline TA:  Pest Manag Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1191-6     Citation Subset:  IM    
Affiliation:
Queensland Department of Primary Industries, 80 Meiers Road, Indooroopilly, QLD 4068, Australia. manoj.nayak@dpi.gld.gov.au
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MeSH Terms
Descriptor/Qualifier:
Animals
Dose-Response Relationship, Drug
Female
Fumigation
Insect Control
Insecticide Resistance / physiology
Insecticides / pharmacology*
Insects / drug effects,  physiology*
Ovum / drug effects*
Phosphines / pharmacology*
Triticum
Chemical
Reg. No./Substance:
0/Insecticides; 0/Phosphines; 7803-51-2/phosphine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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