Local and landscape-scale effects on multiparasitoid coexistence
Abstract
We studied the resource use of four parasitoid species of the gall inducer Diplolepis rosae at landscape and local scale to evaluate their responses to resource patterns. Parasitism rates and parasitoid incidence for some of the species showed correlations with local, of some species with landscape characteristics or for some species with both. Overall parasitism rate was influenced by landscape structure, land use and local characteristics with the exception of herbivore host abundance. Habitat fragmentation diminished only the overall parasitism rate. Overall parasitoid incidence was determined only by land use. Differences between species-specific and overall responses highlight the importance of species characteristics when considering multiparasitoid communities, and support both fine and coarse partitioning between coexisting species sharing the same community.
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