Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 509856
Title Supplying high-quality alternative prey in the litter increases control of an above-ground plant pest by a generalist predator
Author(s) Muñoz-Cárdenas, Karen; Ersin, Firdevs; Pijnakker, Juliette; Houten, Yvonne van; Hoogerbrugge, Hans; Leman, Ada; Pappas, Maria L.; Duarte, Marcus V.A.; Messelink, Gerben J.; Sabelis, Maurice W.; Janssen, Arne
Source Biological Control 105 (2017). - ISSN 1049-9644 - p. 19 - 26.
Department(s) WUR GTB Gewasgezondheid
WUR GTB Gewasgezondheid Bodem en Water
Publication type Refereed Article in a scientific journal
Publication year 2017
Abstract Supplying predators with alternative food can have short-term positive effects on prey densities through predator satiation (functional response) and long-term negative effects through increases of predator populations (numerical response). In biological control, alternative food sources for predators are normally supplied on the crop plants; using the litter-inhabiting food web as a source of alternative food for plant-inhabiting predators has received less attention. We investigated the effect of supplying plant-inhabiting predatory mites with alternative prey (astigmatic mites) in the litter on pest control. Predator (Amblyseius swirskii) movement and population dynamics of the pest (western flower thrips) and predators were studied on rose plants in greenhouses. Predators commuted between the above-ground plant parts where they controlled thrips, and the litter, where they fed on alternative prey, although the latter were a superior diet. Predators controlled thrips better in the presence of the astigmatic mites than in their absence. We show that predatory mites can form a link between above-ground pests and the litter food web, and propose that adding alternative prey to the litter of ornamental greenhouses can result in higher predator densities and increased biological control.
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