BIOL 1902 Lecture Notes - Lecture 3: Swallowtail Butterfly, Papilio Cresphontes, Skink
22 Jun 2014
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Lecture 3: masquerade: where part of the body imitates environment, startle patterns: plan b , ring-necked snake, startle pattern of yellow on the underbelly, giant swallowtail caterpillar, startle structure. Antenna pops out and looks like a snake tongue: osmetaria releases chemical odor and coloured antenna like structure suddenly, beavers, startle sound. Deflection pattern from a specific part of the body. Lose tails after a while: five lined skink. Leaf roller: caterpillars, grubs, spiders, galls, swellings on a plant, generally caused by insects, sumac gall aphids, generally hundreds of insects inside, protective structure. Most birds don"t like hairy caterpillars because it doesn"t digest well. Under attack they curl into balls which means they get protected: woolly bear caterpillars. Modified into stiff spines from soft hair when attacked: mammals use hair as defense, porcupines. Like zip ties they are hard to untie, they work themselves into the muscle which is why they"re so hard to remove.
