Generalist predators disrupt parasitoid aphid control by direct and coincidental intraguild predation

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Generalist predators disrupt parasitoid aphid control by direct and coincidental intraguild predation.

Generalist predators and parasitoids are considered to be important regulators of aphids. The former not only feed on these pests, but might also consume parasitoids at all stages of development. This direct or coincidental interference affects the natural control of aphids, the scale of which is largely unknown, and it has rarely been examined under natural conditions. Here, molecular diagnost...

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Intraguild predation on Eretmocerus sp. nr. emiratus, a parasitoid of Bemisia tabaci, by three generalist predators with implications for estimating the level and impact of parasitism

Intraguild predation (IGP) is pervasive in many managed and unmanaged ecosystems and may have negative, neutral or positive effects on the biological control of pest insects. Both generalist predators and aphelinid parasitoids attack Bemisia tabac i (Gennadius) Biotype B ( B. argentifolii Perring & Bellows) on cotton in the southwestern USA. Free-choice and no-choice laboratory assays were cond...

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Intraguild Predation on the Whitefly Parasitoid Eretmocerus eremicus by the Generalist Predator Geocoris punctipes: A Behavioral Approach

Intraguild predation (IGP) takes place when natural enemies that use similar resources attack each other. The impact of IGP on biological control can be significant if the survival of natural enemy species is disrupted. In the present study, we assessed whether Geocoris punctipes (Hemiptera: Lygaeidae) engages in IGP on Eretmocerus eremicus (Hymenoptera: Aphelinidae) while developing on whitefl...

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Biological control of toxic cyanobacteria by mixotrophic predators: an experimental test of intraguild predation theory.

Intraguild predators both feed on and compete with their intraguild prey. In theory, intraguild predators can therefore be very effective as biological control agents of intraguild prey species, especially in productive environments. We investigated this hypothesis using the mixotrophic chrysophyte Ochromonas as intraguild predator and the harmful cyanobacterium Microcystis aeruginosa as its pr...

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ژورنال

عنوان ژورنال: Bulletin of Entomological Research

سال: 2011

ISSN: 0007-4853,1475-2670

DOI: 10.1017/s0007485311000551