Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity

Bemisia tabaci is a pest of several economic crops worldwide and is mostly managed in Ghana by farmers through the use of insecticides. However, vegetable farmers have recently expressed concerns about the susceptibility of B. tabaci to insecticides. Hence, the susceptibility status of field populat...

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Main Authors:	S.W. Avicor, V.Y. Eziah, E.O. Owusu, M.F.F. Wajidi
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2014
Online Access:	http://journalarticle.ukm.my/6812/ http://journalarticle.ukm.my/6812/ http://journalarticle.ukm.my/6812/1/04_S.W._Avicor.pdf

id	ukm-6812
recordtype	eprints
spelling	ukm-68122016-12-14T06:42:15Z http://journalarticle.ukm.my/6812/ Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity S.W. Avicor, V.Y. Eziah, E.O. Owusu, M.F.F. Wajidi, Bemisia tabaci is a pest of several economic crops worldwide and is mostly managed in Ghana by farmers through the use of insecticides. However, vegetable farmers have recently expressed concerns about the susceptibility of B. tabaci to insecticides. Hence, the susceptibility status of field populations of B. tabaci on cassava, okra and tomato in vegetable growing sites in Accra to two commonly used insecticides, Karate® 2.5 EC (λ-cyhalothrin) and Cydim Super® (36 g Cypermethrin + 400 g Dimethoate per litre), using a modified dipping method and their carboxylesterase activity levels were assessed. The LC50 values of the B. tabaci populations to the insecticides were low and ranged from 0.12-0.55 mL/L to 0.07-0.36 mL/L for Karate® and Cydim Super®, respectively. There was a wide variation in carboxylesterase activity levels of the insect populations with high levels recorded in some of the populations. The elevated activity levels could negatively impact on future whitefly management methods. This study provides baseline information on the insecticide resistance status and carboxylesterase levels of whitefly populations in these areas and for monitoring future insecticide resistance development. Universiti Kebangsaan Malaysia 2014-01 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/6812/1/04_S.W._Avicor.pdf S.W. Avicor, and V.Y. Eziah, and E.O. Owusu, and M.F.F. Wajidi, (2014) Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity. Sains Malaysiana, 43 (1). pp. 31-36. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Bemisia tabaci is a pest of several economic crops worldwide and is mostly managed in Ghana by farmers through the use of insecticides. However, vegetable farmers have recently expressed concerns about the susceptibility of B. tabaci to insecticides. Hence, the susceptibility status of field populations of B. tabaci on cassava, okra and tomato in vegetable growing sites in Accra to two commonly used insecticides, Karate® 2.5 EC (λ-cyhalothrin) and Cydim Super® (36 g Cypermethrin + 400 g Dimethoate per litre), using a modified dipping method and their carboxylesterase activity levels were assessed. The LC50 values of the B. tabaci populations to the insecticides were low and ranged from 0.12-0.55 mL/L to 0.07-0.36 mL/L for Karate® and Cydim Super®, respectively. There was a wide variation in carboxylesterase activity levels of the insect populations with high levels recorded in some of the populations. The elevated activity levels could negatively impact on future whitefly management methods. This study provides baseline information on the insecticide resistance status and carboxylesterase levels of whitefly populations in these areas and for monitoring future insecticide resistance development.
format	Article
author	S.W. Avicor, V.Y. Eziah, E.O. Owusu, M.F.F. Wajidi,
spellingShingle	S.W. Avicor, V.Y. Eziah, E.O. Owusu, M.F.F. Wajidi, Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
author_facet	S.W. Avicor, V.Y. Eziah, E.O. Owusu, M.F.F. Wajidi,
author_sort	S.W. Avicor,
title	Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
title_short	Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
title_full	Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
title_fullStr	Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
title_full_unstemmed	Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
title_sort	insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity
publisher	Universiti Kebangsaan Malaysia
publishDate	2014
url	http://journalarticle.ukm.my/6812/ http://journalarticle.ukm.my/6812/ http://journalarticle.ukm.my/6812/1/04_S.W._Avicor.pdf
first_indexed	2023-09-18T19:47:58Z
last_indexed	2023-09-18T19:47:58Z
_version_	1777406027370594304

Insecticide susceptibility of bemisia tabaci to karate® and cydim super® and its associated carboxylesterase activity

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