Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-05T21:06:29.763Z Has data issue: false hasContentIssue false
  • English
  • Français

Relative fitness of organophosphate-resistant and susceptible strains of Culex quinquefasciatus Say (Diptera: Culicidae)

Published online by Cambridge University Press:  10 July 2009

A. M. Amin  and
G. B. White
A. M. Amin
Affiliation:
Department of Entomology, London School of Hygiene and Tropical Medicine, Keppel Street, London WCIE 7HT, UK
G. B. White
Affiliation:
Department of Entomology, London School of Hygiene and Tropical Medicine, Keppel Street, London WCIE 7HT, UK
Get access Rights & Permissions [Opens in a new window]

Abstract

The effects of chlorpyrifos resistance on fitness in Culex quinquefasciatus Say was evaluated in terms of life-span, fecundity, fertility and rate of development, and these parameters were integrated by calculating the intrinsic rate of natural increase. A chlorpyrifos-resistant strain from Tanzania had very significantly reduced biotic fitness compared to a standard susceptible strain, CfCA, from Sri Lanka. However, after five generations of backcrossing the resistant gene into the genetic background of the susceptible strain, fitness was found to be closer to that of the susceptible strain. The reduced fitness of the original Tanzanian strain therefore appears to be mainly due to background genetic factors rather than to the major resistance gene itself.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 74 , Issue 4 , December 1984 , pp. 591 - 598
Copyright
Copyright © Cambridge University Press 1984

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

Abedi, Z. H. & Brown, A. W. A. (1960). Development and reversion of DDT-resistance in Aedes aegypti.—Can. J. Genet. Cytol. 2, 252–261.CrossRefGoogle Scholar
Amin, A. M. & White, G. B. (in press). Resistance spectra and allelism of chlorpyrifos resistance factors in Culex quinquefasciatus Say, from Colombo and Dar-es-Salaam.—Insect Sci. Applic.Google Scholar
Birch, L. C. (1948). The intrinsic rate of natural increase of an insect population.—J. Anim. Ecol. 17, 15–26.Google Scholar
Curtis, C. F. & Pasteur, N. (1981). Organophosphate resistance in vector populations of the complex of Culex pipiens L. (Diptera: Culicidae).—Bull. ent. Res. 71, 153–161.CrossRefGoogle Scholar
Ferrari, J. A. & Georghiou, G. P. (1981). Effects on insecticidal selection and treatment on reproductive potential of resistant, susceptible, and heterozygous strains of the southern house mosquito.—J. econ. Ent. 74, 323–327.CrossRefGoogle Scholar
Georghiou, G. P. (1972). The evolution of resistance to pesticides.—Annu. Rev. Ecol. & Syst. 3, 133–168.Google Scholar
Georghiou, G. P. & Taylor, C. E. (1977). Genetic and biological influences in the evolution of insecticide resistance.—J. econ. Ent. 70, 319–323.Google Scholar
Keiding, J. (1967). Persistence of resistant populations after the relaxation of the selection pressure.—World Rev. Pest Contr. 6, 115–130.Google Scholar
McKenzie, J. A., Whitten, J. & Adena, M. A. (1982). The effects of genetic background on the fitness of diazinon resistance genotypes of the Australian sheep blowfly, Lucilia cuprina.—Heredity 49, 1–9.CrossRefGoogle Scholar
PperkinsB. D., B. D., Jr. & Grayson, J. M. (1961). Some biological comparisons of resistant and nonresistant strains of the German cockroach, Blattella germanica.—J. econ. Ent. 54, 747–750.CrossRefGoogle Scholar
Roush, R. T. & Hoy, M. A. (1981). Laboratory, glasshouse, and field studies of artificially selected carbaryl resistance in Metaseiulus occidentalis.—J. econ. Ent. 74, 142–147.CrossRefGoogle Scholar
Roush, R. T. & PlappF. W., F. W., Jr (1982). Effects of insecticide resistance on biotic potential of the house fly (Diptera: Muscidae).—J. econ. Ent. 75, 708–713.Google Scholar
Southwood, T. R. E. (1978). Ecological methods: with particular reference to the study of insect populations.—391 pp. London, Methuen.Google Scholar
Thomas, J. G. & Brazzel, J. R. (1961). A comparative study of certain biological phenomena of a resistant and a susceptible strain of the boll weevil, Anthonomus grandis.—J. econ. Ent. 54, 417–420.Google Scholar
Varzandeh, M., Bruce, W. N. & Decker, G. C. (1954). Resistance to insecticides as a factor influencing the biotic potential of the house fly.—J. econ. Ent. 47, 129–134.Google Scholar
Villani, F., White, G. B., Curtis, C. F. & Miles, S. J. (1983). Inheritance and activity of some esterases associated with organophosphate resistance in mosquitoes of the complex of Culex pipiens L. (Diptera: Culicidae).—Bull. ent. Res. 73, 153–170.Google Scholar