16Herbivory - A n n o u n c e m e n ts Exam 3 next Monday,...

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1 Announcements Exam 3 next Monday, see study guide Field trips coming up Galbreath Apr 26 Pepperwood May 4 Deadlines Insect collection May 14 Field Journal May 12 Plant Insect Interactions Herbivory Plant Reproduction Domatia Evolution of Insect Herbivory • Early hexapods contact plant parts in soil • Vascular plants diversfied 300 MYA • Fossil traces of insect eating appear shorly thereafter • Early herbivores often beetles Cretaceous 145 – 65 mya Radiations Angiosperms Coleoptera Lepidoptera Hymenoptera
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2 How Insects Feed on Plants Challenges of Phytophagy Clinging to vegetation Subject to dessication Inferior diet Plant defenses Diet Breadth Monophages feed on one plant taxa Oligophages Feed on only a few plant taxa Polyphages Feed on many plant taxa How Insects Feed on Plants Chewing Mining Boring Mining and boring Sap sucking Gall induction Root or shoot feeding Flower feeding Seed predation
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This note was uploaded on 03/02/2012 for the course BIOLOGY 323 taught by Professor Rank during the Spring '08 term at Sonoma.

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16Herbivory - A n n o u n c e m e n ts Exam 3 next Monday,...

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