Ecological and Evolutionary Interactions between Wild Crucifers and Their Herbivorous Insects(<SPECIAL ISSUE>THE 25TH SYMPOSIUM)

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概要

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• Insects feeding on ten species of wild crucifer were investigated. Differences in host plant range and insect community structure were examined with regard to anti-herbivore defense mechanisms. Most of the crucifer species deterred insect herbivory by disappearing in the summer or by lowering their intrinsic quality as food for insects. Species with these defense mechanisms were exploited by only a few specialized herbivorous insects that seemed to have counter defenses. The plants without these defense mechanisms were used by many herbivorous insect species. Rorippa indica lacked direct defenses, but supported a low total density of herbivore individuals. This crucifer has an indirect defense mechanism : ants attracted to floral nectar defended the plant from deleterious herbivores. Crucifers that disappeared seasonally lacked other anti-herbivore defense mechanisms. This suggests that the phenological response is an alternative other responses to herbivore attack.

• 種生物学会の論文

著者

• Yano Shuichi

  Lab. Of Entomology Faculty Of Agriculture Kyoto University

関連論文

• Ecological and Evolutionary Interactions between Wild Crucifers and Their Herbivorous Insects(THE 25TH SYMPOSIUM)

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