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The evolution of gregariousness in parasitoid wasps

Mayhew, P.J. (orcid.org/0000-0002-7346-6560) (1998) The evolution of gregariousness in parasitoid wasps. Proceedings of the Royal Society B: Biological Sciences. pp. 383-389. ISSN 1471-2954

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Data are assembled on the clutch-size strategies adopted by extant species of parasitoid wasp. These data are used to reconstruct the history of clutch-size evolution in the group using a series of plausible evolutionary assumptions. Extant families are either entirely solitary, both solitary and gregarious, or else clutch size is unknown. Parsimony analysis suggests that the ancestors of most families were solitary, a result which is robust to different phylogenetic relationships and likely data inadequacies. This implies that solitariness was ubiquitous throughout the initial radiation of the group, and that transitions to gregariousness have subsequently occurred a minimum of 43 times in several, but not all lineages. Current data suggest that species-rich and small-bodied lineages are more likely to have evolved gregariousness, and contain more species with small gregarious brood sizes. I discuss the implications of these data for clutch-size theory.

Item Type: Article
Copyright, Publisher and Additional Information: © 1998 The Royal Society
Keywords: clutch size,parasitoid,Hymenoptera,evolution,life histories,gregariousness
Institution: The University of York
Academic Units: The University of York > Biology (York)
Depositing User: Repository Officer
Date Deposited: 13 Jun 2006
Last Modified: 07 Aug 2016 00:05
Published Version: http://dx.doi.org/10.1098/rspb.1998.0306
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/1281

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