NDLI: Selection Strategies of Parasitized Hosts in a Generalist Parasitoid Depend on Patch Quality but Also on Host Size

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Selection Strategies of Parasitized Hosts in a Generalist Parasitoid Depend on Patch Quality but Also on Host Size

Content Provider	Semantic Scholar
Author	Goubault, Marlène Fourrier, Julie Krespi, Liliane Poinsot, Denis Cortesero, Anne Marie
Copyright Year	2004
Abstract	Host rejection, superparasitism, and ovicide are three possible host selection strategies that parasitoid females can adopt when they encounter parasitized hosts. These differ in costs (in terms of time and energy required) and benefits (in terms of number and quality of offspring produced). Their relative payoff should vary with patch quality, (i.e., proportion of parasitized hosts present), and female choice between them should be adapted accordingly. We conducted behavioral observations to test the effect of the ratio of parasitized/unparasitized hosts present in a patch on the host selection strategies of Pachycrepoideus vindemmiae Rondani (Hymenoptera: Pteromalidae). This species being a generalist known to attack hosts of a great range of size, we also tested the impact of host size on female decisions with two host species differing greatly in size (Drosophila melanogaster and Delia radicum). We evaluated the adaptive value of each strategy in relation to host parasitization status and host size by measuring their duration and the potential number of offspring produced.
Starting Page	99
Ending Page	113
Page Count	15
File Format	PDF HTM / HTML
DOI	10.1023/B:JOIR.0000025135.94296.8d
Volume Number	17
Alternate Webpage(s)	http://www.parasitoides.univ-rennes1.fr/pdf/P04002.pdf
Alternate Webpage(s)	https://doi.org/10.1023/B%3AJOIR.0000025135.94296.8d
Journal	Journal of Insect Behavior
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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