FA2008 - BILD 3 - Lecture 10 (Community Ecology - 02)

FA2008 - BILD 3 - Lecture 10 (Community Ecology - 02) -...

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11/6/08 1 B. Predation Predators - animals that eat prey (usually animals) Predation shapes many attributes - predators & prey – Claws, fangs, stingers, and poison of predators – crypsis, mimicry, shells, speed, acute senses of prey (+/-) Prey avoid predation 1. Cryptic coloration, or camouflage – Makes prey difficult to spot Figure 53.5 2. Aposematic coloration – Warns predators to stay away from prey Aposematic coloration
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11/6/08 2 3. Batesian mimicry – A palatable or harmless species mimics an unpalatable or harmful model (a) Hawkmoth larva (b) Green parrot snake Batesian mimicry 4. Müllerian mimicry – Two or more unpalatable species resemble each other (a) Cuckoo bee (b) Yellow jacket C. Herbivory (+/-) Herbivory The process in which an animal eats parts of a plant Result - mechanical and chemical defenses by plants anti-defense adaptations by herbivores
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11/6/08 3 Plant defenses - mechanical Rose stem Ocotillo spines Trichomes - sticky hairs Plant defenses - chemical nicotine caffeine cannabinoids in marijuana Herbivores have counter adaptations to plant defense Want to be a TA? Must have 3.0 GPA and completed 90 units
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This note was uploaded on 03/31/2009 for the course BILD 3 taught by Professor Wills during the Winter '07 term at UCSD.

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FA2008 - BILD 3 - Lecture 10 (Community Ecology - 02) -...

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