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    Influence of plant and residue age on attraction, acceptance and larval survival of the banana weevil Cosmopolites sordidus (Coleoptera: Curculionidae)

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    S09ArtMasanzaInfluenceInthomNodev.pdf (2.653Mb)
    Date
    2009
    Author
    Masanza, M.
    Gold, C.S.
    Huis, A. van
    Ragama, P.E.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Laboratory trials were conducted in Uganda at the Kawanda Agricultural Research Institute to determine attraction, eclosion success and larval survivorship of the banana weevil Cosmopolites sordidus (Germar) on crop residues of different ages. In the first experiment, studies focused on different types and ages of residues of one susceptible highland banana clone ‘Nabusa’ (genome group AAA-EA). Corms attracted 65% of the test weevils, pseudostems 30%, while 5% were non-respondents. Oviposition levels and the number of eggs per female were higher on young than old corms. Eclosion rates of < 1-day-old eggs inserted into corm pieces of residues (cultivar ‘Kisansa’, genome group AAA-EA) declined from 66% in residues collected < 2 days after harvest (DAH) to 58% in residues collected >30 DAH. To assess immature survival, < 1-day-old 1st instar larvae were put on banana corms of suckers and crop residues of the cultivar Kisansa in single rearing chambers. The number of surviving individuals was recorded at 3-day intervals until adults emerged. Survivorship was 12% on sword suckers, 10% on maiden suckers and 7% on flowered plants; and 12% on residues collected < 2 DAH and 5% on residues collected >30 DAH. Larval duration and mean days taken for adult emergence increased with plant and crop residue age. Females emerging from the different plant and residues treatments were similar in weight. The data suggest that all aged residues are suitable hosts for C. sordidus, suggesting that sanitation practices should be implemented soon after harvest.
    https://dx.doi.org/10.1017/S1742758409990324
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2877
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1017/S1742758409990324
    IITA Subjects
    Pests Of Plants; Plant Diseases; Genetic Improvement; Plant Genetic Resources; Plant Health; Plantain
    Agrovoc Terms
    Bananas; Banana Weevil; Cosmopolites Sordidus; Crop Residues; Crop Sanitation; Host Acceptance; Host Attraction
    Regions
    Africa; East Africa
    Countries
    Uganda
    Collections
    • Journal and Journal Articles4835
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