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 550393
Title Effects of temperature and food source on reproduction and longevity of aphid hyperparasitoids of the genera Dendrocerus and Asaphes
Author(s) Boer, Jetske G. de; Salis, Lucia; Tollenaar, Ward; Heumen, Lisa J.M. van; Costaz, Thibault P.M.; Harvey, Jeffrey A.; Kos, Martine; Vet, Louise E.M.
Source BioControl 64 (2019)3. - ISSN 1386-6141 - p. 277 - 290.
DOI https://doi.org/10.1007/s10526-019-09934-4
Department(s) Biosystematics
Laboratory of Entomology
EPS
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Aphidius colemani - Fourth trophic level - Hymenoptera - Megaspilidae - Myzus persicae - Pteromalidae
Abstract

Hyperparasitoids of aphid parasitoids commonly occur in (sweet pepper) greenhouses, and can pose a threat to effective biological control of aphids. Here, we studied life history characteristics of laboratory colonies of Dendrocerus spp. Ratzeburg (Hymenoptera: Megaspilidae) and Asaphes spp. Walker (Pteromalidae) that originated from a commercial sweet pepper greenhouse. We aimed to clarify how these two hyperparasitoid taxa can coexist inside greenhouses. Hyperparasitoids of both taxa have a long lifespan that was extended significantly by food sources that are naturally available in a greenhouse environment, including aphid honeydew and sweet pepper flowers. Differences in sensitivity to decreased or increased temperatures did not appear to explain seasonal patterns in abundance of Dendrocerus spp. and Asaphes spp. in sweet pepper greenhouses. Instead, Dendrocerus spp. may have an advantage early in the season because it thrives on aphid honeydew, while Asaphes spp. may do better later in the season because of its long lifespan and extensive reproductive period.

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