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Future increases in atmospheric CO 2 may not lead to enhanced plant performance, as has been predicted, when herbivory is considered as an interactive factor. This study provides experimental evidence that herbivory by the diamondback moth, Plutella xylostella , either decreased or suppressed the...
I use age ratios of males (1) to examine latitudinal and longitudinal variation in survival in Hermit and Townsend's Warblers, both Neotropical migrants, (2) to show that the estimates for male survival are significantly lower for Townsend's Warblers than for Hermit Warblers, and (3) to show that...
Inbreeding, which is common in plants, may increase the vulnerability of populations to natural enemies. Similarly, natural enemies may increase the expression of inbreeding depression in their hosts, resulting in altered selection on host mating-system evolution. To examine effects of inbreeding...
The nonlethal effects of predation threat can be pervasive but are also easily overlooked. We investigated effects of predation threat on feeding by guppies ( Poecilia reticulata ), and how threat-induced temporal shifts in feeding activity affect reproductive behavior and growth. Contrary to the...