Eco-evolutionary dynamics in herbivorous insect communities mediated by induced plant responses |
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Authors: | Shunsuke Utsumi |
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Institution: | (1) Department of General Systems Studies, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan;(2) Department of Biology, University of Eastern Finland, POB 111, Joensuu, 80101, Finland;(3) Center for Ecological Research, Kyoto University, Otsu Shiga, 520-2113, Japan |
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Abstract: | It is increasingly recognized that the ecology of communities and evolution of species within communities are interdependent,
and researchers have been paying attention to this rapidly emerging field of research, i.e., through studies on eco-evolutionary
dynamics. Most of the studies on eco-evolutionary dynamics have been concerned with direct trophic interactions. However,
community ecologists have shown that trait-mediated indirect effects play an important role in shaping the structure of natural
communities. In particular, in terrestrial plant–insect systems, indirect effects mediated through herbivore-induced plant
responses are common and have a great impact on the structure of herbivore communities. This review describes eco-evolutionary
dynamics in herbivorous insect communities, and specifically focuses on the key role of herbivore-induced plant responses
in eco-evolutionary dynamics. First, I review studies on the evolution of herbivore traits relevant to plant induction and
discuss evolution in a community context mediated by induced plant responses. Second, I highlight how intraspecific genetic
variation or evolution in herbivore traits can influence herbivore community structure. Finally, I propose the hypothetical
model that induced plant responses supports eco-evolutionary feedback in herbivore communities. In this review, I argue that
the application of the indirect interaction web approaches into studies on eco-evolutionary will provide profound insights
into understanding of mechanisms of the generation and maintenance of biodiversity. |
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Keywords: | Community genetics Diffuse selection Eco-evolutionary feedback Herbivore-induced plant response Indirect interaction web Trait-mediated indirect effects |
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