Document Detail

Desiccation resistance of wild and mass-reared Bactrocera tryoni (Diptera: Tephritidae).
MedLine Citation:
PMID:  23866088     Owner:  NLM     Status:  Publisher    
In pest management programmes that incorporate the sterile insect technique (SIT), the ability of mass-reared insects to tolerate dry conditions may influence their survival after release in the field. In the present study, desiccation resistance of adult mass-reared Queensland fruit flies, Bactrocera tryoni (Frogatt) (Diptera: Tephritidae), that are routinely released in SIT programmes was compared with that of wild flies at 1, 10 and 20 days after adult eclosion. Under dry conditions without access to food or water, longevity of mass-reared B. tryoni was significantly less than that of their wild counterparts. Desiccation resistance of mass-reared flies declined monotonically with age, but this was not the case for wild flies. The sharp decline in desiccation resistance of mass-reared flies as they aged was likely explained by decreased dehydration tolerance. As in an earlier study, desiccation resistance of females was significantly lower than that of males but this was particularly pronounced in mass-reared females. Female susceptibility to dry conditions corresponded with declining dehydration tolerance with age and associated patterns of reproductive development, which suggests that water content of their oocyte load is not available for survival during periods of water stress.
C W Weldon; S Yap; P W Taylor
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-7-18
Journal Detail:
Title:  Bulletin of entomological research     Volume:  -     ISSN:  1475-2670     ISO Abbreviation:  Bull. Entomol. Res.     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-7-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984715R     Medline TA:  Bull Entomol Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-10     Citation Subset:  -    
Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa.
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