Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-22T20:01:33.317Z Has data issue: false hasContentIssue false
  • English
  • Français

Contact toxicities of 22 insecticides to the cocoa Mirid Distantiella theobroma (Dist.) (Hemiptera, Miridae)*

Published online by Cambridge University Press:  10 July 2009

G. Prins
G. Prins
Affiliation:
Cocoa Research Institute, Ghana Academy of Sciences, New Tafo, Ghana
Get access Rights & Permissions [Opens in a new window]

Extract

In tests of insecticides applied in a spray tower to the ventral surface of nymphs of Distantiella theobroma (Dist.) collected from lindane-resistant and lindanesusceptible populations in cocoa plantations in Ghana, the levels of resistance of the former (ratios of the LC50's of the two populations) were 20·1, 74·4 and 73·3 for lindane, dieldrin and aldrin, respectively. There was no cross-resistance to DDT. Out of 18 other compounds tested, carbaryl (the most toxic), two other carbamates and two organophosphates were more toxic to the resistant population than was lindane to the susceptible one.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 56 , Issue 2 , December 1965 , pp. 231 - 235
Copyright
Copyright © Cambridge University Press 1965

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

Anon. (1948). Capsid research. Chemical control.—Rep. W. Afr. Cacao Res. Inst. 1946–47 pp. 40–41.Google Scholar
Abbott, W. S. (1925). A method of computing the effectiveness of an insecticide.—J. econ. Ent. 18 pp. 265–267.CrossRefGoogle Scholar
Cotterell, G. S. (1926). Preliminary study of the life history and habits of Sahlbergella singularis Hagl., and Sahlbergella theobroma Dist.—Bull. Gold Cst Dep. Agric. no. 3, 26 pp.Google Scholar
Dudgeon, G. C. (1910). Notes on two West African Hemiptera injurious to cocoa.—Bull. ent. Res. 1 pp. 59–62.CrossRefGoogle Scholar
Dunn, J. A. (1963). Insecticide resistance in the cocoa capsid, Distantiella theobroma (Dist.).—Nature, Lond. 199 no. 4899 p. 1207.CrossRefGoogle Scholar
Finney, D. J. (1952). Probit analysis.—2nd edn, 318 pp. London, Cambridge; Univ. Pr.Google Scholar
Harris, C. R., Manson, G. F. & Mazurek, J. H. (1962). Development of insecticidal resistance by soil insects in Canada.—J. econ. Ent. 55 pp. 777–780.CrossRefGoogle Scholar
Potter, C. (1952). An improved laboratory apparatus for applying direct sprays and surface films, with data on the electrostatic charge on atomized spray fluids.—Ann. appl. Biol. 39 pp. 1–28.CrossRefGoogle Scholar
Stapley, J. H. & Hammond, P. S. (1959). Large-scale trials with insecticides against capsids on cacao in Ghana.—Emp. J. exp. Agric. 27 no. 108 pp. 343–353.Google Scholar