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Inheritance of dieldrin-resistance in Cimex lectularius L. and Pediculus h. humanus L

Published online by Cambridge University Press:  10 July 2009

A. M. Guneidy  and
J. R. Busvine
A. M. Guneidy
Affiliation:
London School of Hygiene and Tropical Medicine
J. R. Busvine
Affiliation:
London School of Hygiene and Tropical Medicine
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Extract

The mode of inheritance of dieldrin-resistance in Cimex lectularius L. and Pediculus h. humanus L. was investigated. The method involved the determination of dosage/mortality regression lines by exposing batches of insects to a range of dieldrin concentrations. Reciprocal crosses were made between normal (N) and resistant (R) strains of each insect, and the F1 and F2 progeny were examined for susceptibility levels over a wide range of concentrations of dieldrin. Back-crosses were made from the F1 generation to N and R strains, and the progeny were examined in the same way. In some cases, further back-crosses were made after elimination of susceptible individuals from the progeny of the first back-cross.

All the results with C. lectularius were consistent with monofactorial inheritance of dieldrin-resistance through a gene of intermediate dominance. With P. h. humanus, the results were complicated by an apparent maternal effect which caused the F1 and F2 generations from a N ♀ × R ♂ cross to be less resistant than those from a R ♀ × N ♂ cross. In general, however, the results indicated genetic segregation consistent with the same type of monofactorial inheritance as that found in C. lectularius.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 55 , Issue 3 , December 1964 , pp. 509 - 517
Copyright
Copyright © Cambridge University Press 1964

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References

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