Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-25T04:43:36.969Z Has data issue: false hasContentIssue false

Resistance in Blattella germanica (L.) (Orthoptera, Blattidae): the effect of propoxur selection and non-selection on the resistance spectrum developed by diazinon selection

Published online by Cambridge University Press:  10 July 2009

W. J. Collins
Affiliation:
Department of Entomology, Ohio State University, Columbus, Ohio 43210, USA

Abstract

Two strains of Blattella germanica (L.) were developed from a laboratory colony that was resistant to diazinon, propoxur, pyrethrins, lindane and DDT due to selection with diazinon. One strain was reared for nine generations without selection; the other strain was selected with propoxur for 14 generations; selection of the parent strain with diazinon was continued. Resistance to all five insecticides was stable for nine generations in the unselected strain, indicating fixation of the recessive genetic factor for diazinon and propoxur resistance and the incompletely dominant factor(s) for pyrethrins, lindane and DDT resistance. Diazinon and propoxur were equally effective as selecting agents for increasing resistance to diazinon, propoxur and pyrethrins and maintaining resistance to lindane and DDT. Resistance to diazinon and propoxur is probably due to a single recessive factor which attained genetic fixation by selection with diazinon. Cross-resistance to pyrethrins, lindane and DDT, also fixed by diazinon selection, is not due to heterotic effects but may be the pleiotropic action of the diazinon-resistance gene or due to a separate genetic system. The practical implications of this research are discussed.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1975

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Cochran, D. G. (1973). Inheritance and linkage of pyrethrins resistance in the German cockroach.—J. econ. Ent. 66, 2730.CrossRefGoogle ScholarPubMed
Collins, W. J. (1973). German cockroach resistance. I. Resistance to diazinon includes cross-resistance to DDT, pyrethrins and propoxur in a laboratory colony.—J. econ. Ent. 66, 4447.CrossRefGoogle Scholar
Finney, D. J. (1971). Probit analysis.—3rd edn, 333 pp. Cambridge, Cambridge University Press.Google Scholar
Grayson, J. M. (1961). Resistance to DDT and chlordane in the German cockroach following discontinuance and restoration of selection.—Int. Congr. Ent. 1, 786790.Google Scholar
Katz, A. J., Collins, W. J. & Skavarel, R. V. (1973). Resistance in the German cockroach (Orthoptera: Blattellidae): the inheritance of diazinon resistance and cross resistance.—J. med. Ent. 10, 599604.CrossRefGoogle ScholarPubMed
McDonald, I. C, Ross, M. H. & Cochran, D. G. (1969). Genetics and linkage of aldrin resistance in the German cockroach, Blattella germanica (L.).—Bull. Wld Hlth Org. 40, 745752.Google ScholarPubMed