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Field Experiments of Pollination Ecology: The Case of Lycoris sanguinea var. sanguinea
Published on: November 25, 2016
Are insect pollinators more generalist than insect herbivores?
Colin Fontaine1, Elisa Thébault, Isabelle Dajoz
1NERC Centre for Population Biology, Division of Biology, Imperial College London, , Silwood Park Campus, Ascot, Berkshire SL5 7PY, UK. c.fontaine@imperial.ac.uk
Proceedings. Biological Sciences
|June 12, 2009
Summary
The type of interaction, whether pollination or herbivory, significantly impacts species generalism in plant-insect communities. Pollinators interact broadly, while herbivores connect with more closely related plants.
Area of Science:
- Ecology
- Community Ecology
- Evolutionary Biology
Background:
- Generalist species are increasingly recognized for their significant role in community functioning and evolution.
- The type of interaction (trophic vs. mutualistic) is hypothesized to influence species generalization, but direct comparisons are lacking.
Purpose of the Study:
- To compare species generalization levels between plant-pollinator and plant-herbivore interactions.
- To investigate how interaction type affects various metrics of species generalism, including community distribution and phylogenetic diversity.
Main Methods:
- Analysis of 44 plant-insect networks representing pollination and herbivory communities.
- Comparison of non-quantitative, quantitative, and phylogenetic measures of species generalism.
Main Results:
- Interaction type significantly impacts species generalism across different measurement types.
- Pollinators generally interact with a wider and more even range of plant species than herbivores.
- Herbivores exhibit a stronger tendency to interact with plant species that are phylogenetically closer to each other compared to pollinators.
Conclusions:
- The type of interaction fundamentally shapes the structure and evolutionary dynamics of ecological communities.
- Understanding these interaction-specific differences is crucial for comprehending the functioning of multispecies assemblages.
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