Houndete Th., Ketoh Guillaume Koffivi, Hema Omer S.A., Brévault Thierry, Glitho Isabelle Adolé, Martin Thibaud. 2010. Insecticide resistance in field populations of Bemisia tabaci (Hemiptera: Aleyrodidae) in West Africa. Pest Management Science, 66 (11) : 1181-1185.
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- Anglais
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Quartile : Q1, Sujet : ENTOMOLOGY / Quartile : Q1, Sujet : AGRONOMY
Résumé : BACKGROUND: The tobacco whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), has developed a high degree of resistance to several chemical classes of insecticides throughout the world. To evaluate the resistance status in West Africa, eight insecticides from different chemical families were tested using the leaf-dip method on four field populations collected from cotton in Benin, Togo and Burkina Faso. RESULTS: Some field populations showed a significant loss of susceptibility to pyrethroids such as deltamethrin [resistance ratio (RR) 3-5] and bifenthrin (RR 4-36), to organophosphates (OPs) such as dimethoate (RR 8-15) and chlorpyrifos (RR 5-7) and to neonicotinoids such as acetamiprid (RR 7-8) and thiamethoxam (RR 3-7). Bemisia tabaci was also resistant to pymetrozine (RR 3-18) and to endosulfan (RR 14-30). CONCLUSION: The resistance of B. tabaci to pyrethroids and OPs is certainly due to their systematic use in cotton treatments for more than 30 years. Acetamiprid has been recently introduced for the control ofwhiteflies.Unfortunately, B. tabaci populations from Burkina Faso seem to be already resistant. Because cross-resistance between these compounds has never been observed elsewhere, resistance to neonicotinoids could be due to the presence of an invasive B. tabaci biotype recently detected in the region.
Mots-clés Agrovoc : Bemisia tabaci, Gossypium, résistance aux pesticides, pyréthrine, composé organochlore
Mots-clés géographiques Agrovoc : Togo, Bénin, Burkina Faso, Afrique occidentale
Classification Agris : H10 - Ravageurs des plantes
Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique
Auteurs et affiliations
- Houndete Th., INRAB (BEN)
- Ketoh Guillaume Koffivi, Université de Lomé (TGO)
- Hema Omer S.A., INERA (BFA)
- Brévault Thierry, CIRAD-PERSYST-UPR SCA (USA) ORCID: 0000-0003-0159-3509
- Glitho Isabelle Adolé, Université de Lomé (TGO)
- Martin Thibaud, CIRAD-PERSYST-UPR HortSys (FRA) ORCID: 0000-0002-4915-4436
Source : Cirad - Agritrop (https://agritrop.cirad.fr/569163/)
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