• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

    Intraguild predation and cannibalism between the predatory mites Neoseiulus neobaraki and N. paspalivorus, natural enemies of the coconut mite Aceria guerreronis

    Thumbnail
    View/Open
    S12NeglohIntraguildInthomNodev.pdf (294.8Kb)
    Date
    2012-11
    Author
    Negloh, K.
    Hanna, R.
    Schausberger, P.
    Type
    Journal Article
    Metadata
    Show full item record
    Abstract/Description
    Neoseiulus neobaraki and N. paspalivorus are amongst the most common phytoseiid predators of coconut mite, Aceria guerreronis, found in the spatial niche beneath coconut fruit bracts. Both predators may occur on the same coconut palms in Benin and Tanzania and are therefore likely to interact with each other. Here, we assessed cannibalism and intraguild predation (IGP) of the two predators in the absence and presence of their primary prey A. guerreronis. In the absence of the shared extraguild prey, A. guerreronis, N. neobaraki killed 19 larvae of N. paspalivorus per day and produced 0.36 eggs/female/day, while the latter species killed only 7 larvae of the former and produced 0.35 eggs/female/day. Presence of A. guerreronis only slightly decreased IGP by N. neobaraki but strongly decreased IGP by N. paspalivorus, which consumed 4–7 times less IG prey than N. neobaraki. Resulting predator offspring to IG prey ratios were, however, 4–5 times higher in N. paspalivorus than N. neobaraki. Overall, provision of A. guerreronis increased oviposition in both species. In the cannibalism tests, in the absence of A. guerreronis, N. neobaraki and N. paspalivorus consumed 1.8 and 1.2 conspecific larvae and produced almost no eggs. In the presence of abundant herbivorous prey, cannibalism dramatically decreased but oviposition increased in both N. neobaraki and N. paspalivorus. In summary, we conclude that (1) N. neobaraki is a much stronger intraguild predator than N. paspalivorus, (2) cannibalism is very limited in both species, and (3) both IGP and cannibalism are reduced in the presence of the common herbivorous prey with the exception of IGP by N. neobaraki, which remained at high levels despite presence of herbivorous prey. We discuss the implications of cannibalism and IGP on the population dynamics of A. guerreronis and the predators in view of their geographic and within-palm distribution patterns.
    http://dx.doi.org/10.1007/s10493-012-9581-6
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1805
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1007/s10493-012-9581-6
    IITA Subjects
    Pests Of Plants
    Agrovoc Terms
    Trophic Interactions; Eriophyidae; Phytoseiidae; Biological Control; Coconut
    Regions
    Africa; West Africa; East Africa
    Countries
    Benin; Tanzania
    Journals
    Experimental and Applied Acarology
    Collections
    • Journal and Journal Articles5283
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository