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Genetics of diazinon resistance in larvae of Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae)

Published online by Cambridge University Press:  10 July 2009

G. J. Shanahan
G. J. Shanahan
Affiliation:
Biological and Chemical Research Institute, N.S.W. Department of Agriculture, P.M.B. 10, Rydalmere, N.S.W. 2116, Australia.
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Abstract

The response of F1 larvae from reciprocal crosses of susceptible × organophosphorus-resistant strains of Lucilia cuprina (Wied.) to diazinon was intermediate in relation to that for larvae from the parental lines to the chemical. Exposure to a concentration of 0·4 p.p.m. diazinon for 24 h was lethal to susceptible larvae. Close agreement with 1:1 ratios of susceptible: hybrid resistant larvae was obtained when larvae from a repeat backcross series were exposed to 0.4 p.p.m diazinon in each generation. Additionally, there was correspondence between response lines for larvae of backcrosses 1 and 3. This information, plus the recovery of a homozygous-resistant sub-strain by exposure of F2 larvae to a level of the chemical that discriminated against susceptible and hybrid genotypes, suggest that diazinon resistance in the larvae is due to a major allele.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 69 , Issue 2 , June 1979 , pp. 225 - 228
Copyright
Copyright © Cambridge University Press 1979

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References

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