Skip to main content Accessibility help
×
Home
Hostname: page-component-99c86f546-45s75 Total loading time: 0.285 Render date: 2021-12-01T04:57:23.348Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true, "newUsageEvents": true }

Studies on insecticide resistance in cotton stainers, Dysdercus spp. (Hemiptera: Pyrrhocoridae), in Kenya

Published online by Cambridge University Press:  10 July 2009

G. H. N. Nyamasyo
Affiliation:
Ministry of Agriculture, Kibos Research Station, Kenya
A. K. Karel
Affiliation:
Department of Entomology, University of Nairobi, P.O. Box 30197, Nairobi, Kenya

Abstract

Resistance to carbaryl, lindane and methidathion was studied in field and laboratory strains of Dysdercus fasciatus Sign., D. nigrofasciatus Stål, D. superstitiosits (F.) and D. cardinalis Gerst. from Kenya. Four-day old fifth-instar female nymphs were found to be the most convenient for bioassay. The LC50s of carbaryl, lindane and methidathion for D. fasciatus were 372, 240, and 110 mg/litre, respectively, those for D. nigrofasciatus 337, 294, and 111 mg/litre, and that for carbaryl for D. cardinalis 147 mg/litre. The Meru and Ngwata strains of D. fasciatus had resistance factors of ×5·3 and ×6·1, respectively, to carbaryl. The field strains of all four species showed slight resistance (up to ×3·4) to lindane and methidathion. The poor control of Dysdercus spp. experienced in Eastern Province, Kenya, is probably due to the development of resistance to carbaryl. A laboratory and a field strain of each of D. fasciatus and D. nigrofasciatus were subjected to carbaryl selection pressure for six generations of doses equivalent to the LC50-LC70. The laboratory strain of D. fasciatus was also subjected to lindane selection for six generations. The laboratory and field strains of D. fasciatus developed resistance to carbaryl of ×3·7 and ×5·7, respectively, and cross-resistance to lindane of up to ×2·7. No significant increase in resistance was observed in D. nigrofasciatus after selection. The laboratory strain of D. fasciatus developed resistance to lindane of ×5·5 after selection and cross-resistance to carbaryl of ×4·3.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1982

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

Brown, A. W. A. & Pal, R. (1971). Insecticide resistance in arthropods. 2nd edn.Monograph Ser. W.H.O. no. 38, 491 pp.Google ScholarPubMed
Davidson, A. (1964). Control of insect pests of cotton in Eastern Region, Kenya.—Emp. Cott. Grow. Rev. 41, 276279.Google Scholar
De Lima, C.P.F. (1972). Lindane resistance in field strains of Sitophilus zeamais (Motsch.) in Kenya.—J. stored Prod. Res. 8, 167175.CrossRefGoogle Scholar
FAO (Food and Agricultural Organisation) (1970). Pest resistance to pesticides in agriculture.—24 pp. Rome, FAO (CP/26).Google Scholar
Geering, Q. A. (1956). A method for controlled breeding of cotton stainers, Dysdercus spp.(Pyrrhocoridae).—Bull. ent. Res. 46, 743746.CrossRefGoogle Scholar
La Croix, E. A. S. (1966). Stainer bugs (Dysdercus spp.) in Coast Province, Kenya.—Emp. Cott. Grow. Rev. 43, 4155.Google Scholar
Muthamia, J. B. (1971). Cotton pest control.—21 pp. Kenya, Minist. Agric.Google Scholar
Rens, G. R. (1974). Entomology research on cotton pests and their control 1967–1974.—88 pp. Kenya, Minist. Agric.Google Scholar
4
Cited by

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Studies on insecticide resistance in cotton stainers, Dysdercus spp. (Hemiptera: Pyrrhocoridae), in Kenya
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Studies on insecticide resistance in cotton stainers, Dysdercus spp. (Hemiptera: Pyrrhocoridae), in Kenya
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Studies on insecticide resistance in cotton stainers, Dysdercus spp. (Hemiptera: Pyrrhocoridae), in Kenya
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *