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Small-scale spatial resource partitioning in a hyperparasitoid community

Content Provider	Springer Nature Link
Author	Harvey, Jeffrey A. Snaas, Helen Malcicka, Miriama Visser, Bertanne Bezemer, T. Martijn
Copyright Year	2014
Abstract	Plant-herbivore-natural enemy associations underpin ecological communities, and such interactions may go up to four (or even more) trophic levels. Here, over the course of a growing season, we compared the diversity of secondary hyperparasitoids associated with a common host, Cotesia glomerata, a specialized larval endoparasitoid of cabbage butterfly caterpillars that in turn feed on brassicaceous plants. Cocoon clusters of C. glomerata were pinned to ~30 Brassica nigra plants by pinning them either to branches in the canopy (~1.5 m high) or to the base of the stem near the ground. The cocoons were collected a week later and reared to determine which hyperparasitoid species emerged from them. This was done in four consecutive months (June–September). Cocoons placed in the canopy were primarily attacked by specialized winged hyperparasitoids (Lysibia nana, Acrolyta nens), whereas cocoons on the ground were attacked by both winged and generalist wingless hyperparasitoids (Gelis acarorum, G. agilis), although this changed with season. There was much more temporal variation in the diversity and number of species attacking cocoons in the canopy than on the ground; the abundance of L. nana and A. nens varied from month to month, whereas P. semotus was only prevalent in August. By contrast, G. acarorum was abundant in all of the samples placed near the ground. Our results show that hyperparasitoids partition host resources at remarkably small vertical spatial scales. We argue that spatial differences in the distribution of natural enemies can contribute to the diversity patterns observed in the field.
Starting Page	393
Ending Page	401
Page Count	9
File Format	PDF
ISSN	18728855
Journal	Arthropod-Plant Interactions
Volume Number	8
Issue Number	5
e-ISSN	18728847
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-07-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acrolyta nens Brassica nigra Competition Gelis sp. Lysibia nana Multitrophic interactions Niche Pieris brassicae Entomology Invertebrates Plant Sciences Ecology Behavioural Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Insect Science Agronomy and Crop Science

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Small-scale spatial resource partitioning in a hyperparasitoid community

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Data from: Spatial and temporal diversity in hyperparasitoid communities of Cotesia glomerata on garlic mustard, Alliaria petiolata (Dataset)

Root herbivore effects on above-ground herbivore, parasitoid and hyperparasitoid performance via changes in plant quality

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