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1 May 2011 Eggs and Egg Loads of Field-Collected Ctenoplematinae (Hymenoptera: Ichneumonidae): Evidence for Phylogenetic Constraints and Life-History Trade-Offs
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Abstract
Ctenoplematine Ichneumonidae were sampled with Malaise traps, primarily from central Texas, and dissected to explore variation in reproductive tract morphology, egg size, and egg load. A few species representing the subfamilies Xoridinae, Labeninae, Poemeniinae, Ophioninae, Banchinae, and Tryphoninae were examined for comparison. All ctenopelmatines were synovigenic, but egg size and egg load were highly variable among species. Eggs of koinobionts were always smaller than eggs of the idiobiont taxa Labena, Podoschistus, and Xorides, even after adjustment for body size. Egg loads of koinobionts were significantly larger than those of idiobionts. We discuss our findings in the context of the idiobiont/koinobiont dichotomy and associated life-history traits.
© 2011 Entomological Society of America
Heather M. Cummins, Robert A. Wharton and Aubrey M. Colvin "Eggs and Egg Loads of Field-Collected Ctenoplematinae (Hymenoptera: Ichneumonidae): Evidence for Phylogenetic Constraints and Life-History Trade-Offs," Annals of the Entomological Society of America 104(3), (1 May 2011). https://doi.org/10.1603/AN10123
Received: 10 August 2010; Accepted: 1 February 2011; Published: 1 May 2011
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