Plant-Herbivore Interactions and Theory of Coevolution(<SPECIAL ISSUE>THE 25TH SYMPOSIUM)
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概要
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We consider a mathematical model for the coevolution of a plant's defense against herbivores and the herbivore's ability to exploit the plant. The result of coevolution is predicted using the phase portrait of trait value dynamics and contour plots of fitnesses. The following results are derived : (1) The fitnesses of both plant and herbivore are higher at an "armless" state in which both plant and herbivore invest a minimum amount of energy and/or resources in defense and feeding respectively, than at the coevolutionarily stable state (CSS) ; (2) Perpetual increase in the trait values of both species may occur when the marginal costs of defense and feeding abilities decrease as these abilities increase ; (3) If the marginal costs of defense and feeding abilities increase as the abilities increase, there is a coevolutionary equilibrium with finite trait values ; (4) There may be more than one coevolutionarily stable state (CSS).
- 種生物学会の論文
著者
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Matsuda Hiroyuki
Department of Biotechnology, Graduate School of Engineering, Osaka University
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Abrams Peter
Department Of Ecology University Of Minnesota St. Paul
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Abrams Peter
Department Of Ecology And Evolutionary Biology University Of Toronto
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Matsuda Hiroyuki
Department Of Agricultural Chemistry The University Of Tokyo
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Matsuda Hiroyuki
Department Of Biology Farulty Of Science Kyushu University
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