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    Seasonal variations of Spodoptera frugiperda host plant diversity and parasitoid complex in southern and central Benin

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    Journal Article (5.720Mb)
    Date
    2022
    Author
    Winsou, J.K.
    Tepa-Yotto, G.
    Thunes, K.H.
    Meadow, R.
    Tamo, M.
    Saethre, M.G.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) was recorded for the first time in 2016 attacking maize fields in central and west Africa. Soon after, several other regions and countries have reported the pest in almost the entire sub-Saharan Africa. In the present study, we assumed that (i) a variety of alternative plant species host FAW, especially during maize off-season, (ii) a wide range of local parasitoids have adapted to FAW and (iii) parasitoid species composition and abundance vary across seasons. During a two-year survey (from June 2018 to January 2020), parasitoids and alternative host plants were identified from maize and vegetable production sites, along streams and lowlands, on garbage dumps and old maize fields in southern and partly in the central part of Benin during both maize growing- and off-season. A total of eleven new host plant species were reported for the first time, including Cymbopogon citratus (de Candolle) Stapf (cultivated lemon grass), Bulbostylis coleotricha (A. Richard) Clarke and Pennisetum macrourum von Trinius (wild). The survey revealed seven parasitoid species belonging to four families, namely Platygastridae, Braconidae, Ichneumonidae, and Tachinidae associated with FAW on maize and alternative host plants. The most abundant parasitoid species across seasons was the egg parasitoid Telenomus remus (Nixon) (Hymenoptera: Platygastridae). These findings demonstrate FAW capability to be active during the maize off-season in the selected agro-ecologies and provide baseline information for classical and augmentative biocontrol efforts.
    https://dx.doi.org/10.3390/insects13060491
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7997
    IITA Authors ORCID
    Ghislain Tepa-Yottohttps://orcid.org/0000-0002-9650-8313
    Manuele Tamòhttps://orcid.org/0000-0002-5863-7421
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3390/insects13060491
    Research Themes
    Biotech and Plant Breeding; Plant Production and Health
    IITA Subjects
    Agronomy; Food Security; Maize; Pests of Plants; Plant Breeding; Plant Health; Plant Production
    Agrovoc Terms
    Spodoptera Frugiperda; Host Plants; Food Security; Maize; West Africa
    Regions
    Africa; West Africa
    Countries
    Benin (Dahomey)
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Insects
    Collections
    • Journal and Journal Articles4836
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