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    Susceptibility profiles of helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) to deltamethrin reveal a contrast between the northern and the southern Benin

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    U19ArtTossouSusceptibilityInthomDev.pdf (1.886Mb)
    Date
    2019
    Author
    Tossou, E.
    Tepa-Yotto, G.
    Kpindou, O.K.D.
    Sandeu, R.
    Datinon, B.
    Zeukeng, F.
    Akoton, R.
    Tchigossou, G.M.
    Djègbè, I.
    Vontas, J.
    Martin, T.
    Wondji, C.
    Tamò, M.
    Bokonon-Ganta, A.H.
    Djouaka, R.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Helicoverpa armigera is an indigenous species in Africa and has been reported in the destruction of several crops in Benin. Management of H. armigera pest is mainly focused on the use of synthetic pyrethroids, which may contribute to resistance selection. This study aimed to screen the susceptibility pattern of field populations of H. armigera to deltamethrin in Benin. Relevant information on the type of pesticides used by farmers were gathered through surveys. Collected samples of Helicoverpa (F0) were reared to F1. F0 were subjected to morphological speciation followed by a confirmation using restriction fragment length polymorphism coupled with a polymerase chain reaction (RFLP-PCR). F1 (larvae) were used for insecticide susceptibility with deltamethrin alone and in the presence of the P450 inhibitor Piperonyl Butoxide (PBO). Deltamethrin and lambda-cyhalothrin were the most used pyrethroids in tomato and cotton farms respectively. All field-sampled Helicoverpa were found to be H. armigera. Susceptibility assays of H. armigera to deltamethrin revealed a high resistance pattern in cowpea (resistance factor (RF) = 2340), cotton (RF varying from 12 to 516) and tomato (RF=85) farms which is a concern for the control of this major polyphagous agricultural pest. There was a significant increase of mortality when deltamethrin insecticide was combined with piperonyl butoxide (PBO), suggesting the possible involvement of detoxification enzymes such as oxidase. This study highlights the presence of P450 induced metabolic resistance in H. armigera populations from diverse cropping systems in Benin. The recorded high levels of deltamethrin resistance in H. armigera is a concern for the control of this major agricultural pest in Benin as the country is currently embarking into economical expansion of cotton, vegetables and grain-legumes cropping systems.
    https://dx.doi.org/10.3390/ijerph16111882
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6136
    Non-IITA Authors ORCID
    Ghislain Tepa-Yottohttps://orcid.org/0000-0002-9650-8313
    Martin Tumuherezehttps://orcid.org/0000-0002-1298-740X
    Manuele Tamòhttps://orcid.org/0000-0002-5863-7421
    Rousseau Djouakahttps://orcid.org/0000-0003-4772-0753
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3390/ijerph16111882
    Research Themes
    NUTRITION & HUMAN HEALTH; PLANT PRODUCTION & HEALTH
    IITA Subjects
    Nutrition; Pests Of Plants; Plant Health; Plant Production
    Agrovoc Terms
    Helicoverpa Armigera; Synthetic Pyrethrins; Pests Of Plants; Benin; Pyrethroids
    Regions
    Africa; West Africa
    Countries
    Benin
    Journals
    International Journal of Environmental Research and Public Health
    Collections
    • Journal and Journal Articles4836
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