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    Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

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    Journal Article (1014.Kb)
    Date
    2022
    Author
    Loko, Y.
    Toffa, J.
    Gavoedo, D.M.
    Kitherian, S.
    Orobiyi, A.
    Tamò, M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Background Alloeocranum biannulipes Montr. and Sign.(Hemiptera: Reduviidae) is a predator present in stored yam chips and a promising biological control agent against Dinoderus porcellus Lesne (Coleoptera: Bostrichidae). Numerical responses of A. biannulipes to different densities (1, 2, 4, 6, and 8) of D. porcellus larvae were evaluated under ambient laboratory conditions (T°: 25 ± 2 °C; RH: 75–80%; photoperiod 12:12 h (L/D)). The number of consumed prey, duration of pre-oviposition and oviposition, number of eggs laid, pre-imaginal development times and mortality rate of the predator were recorded. Results The results revealed that A. biannulipes females preying on the highest larval density of D. porcellus (8) presented the highest predation rate (4.34 ± 0.18 larvae/predator/day), shortest pre-oviposition period (11.01 ± 0.57 days) and the highest oviposition period (15.83 ± 1.02 days). The daily number of eggs laid by A. biannulipes female (y) as a function of the number of D. porcellus larvae consumed (x) was modelled by the equation y = 0.158x2 – 0.4073x + 3.8151 (R2 = 0.571). The efficiency of prey conversion into eggs of A. biannulipes females decreased with increased prey density. The prey density did not affect the hatching rate of A. biannulipes eggs and the pre-imaginal development times. However, A. biannulipes nymphs fed with more (2 to 8) D. porcellus showed a significantly higher survival rate than those fed with a single larva. Conclusions The positive numerical response of A. biannulipes suggests that this predator could play a key role in biological control program against D. porcellus.
    https://dx.doi.org/10.1186/s41936-022-00267-w
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7391
    IITA Authors ORCID
    Manuele Tamòhttps://orcid.org/0000-0002-5863-7421
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1186/s41936-022-00267-w
    Research Themes
    Plant Production and Health
    IITA Subjects
    Agronomy; Food Security; Pests of Plants; Plant Breeding; Plant Diseases; Plant Health; Plant Production; Yam
    Agrovoc Terms
    Biological Control; Yams; Pests of Plants; Predators; Oviposition
    Regions
    Africa; West Africa
    Countries
    Benin (Dahomey)
    Journals
    The Journal of Basic and Applied Zoology
    Collections
    • Journal and Journal Articles4836
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