BIOL 1902 Lecture Notes - Lecture 3: Papilio Canadensis, Wood Turtle, Painted Turtle
28 Mar 2016
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Document Summary
Deflect the attack to a non vital body part. Tails can look like an antenna on the head. Fake antennae & heads can serve as distraction of deflection structures. Painted turtle, map turtle, wood turtle: pull inside their shell. Snapping turtle (can"t pull inside their shell) Eastern tent caterpillar makes a silk tent. Hairs can be modified into stiff spines woolly bear. Hairs + poison = poison spins = chemical defences. Poisonous caterpillars are usually brightly coloured: milkweed tussock moth caterpillars, yellow jacket, milkweed beetle, warning colourations = aposematic colouration. Other animals attain chemicals by eating plants that contain them: monarch caterpillar, sequester cardiac glycoside poison from milkweeds. Photurls fireflies sequester steroidal toxins by eating male photinus fireflies. Photurls imitates the pattern of the other species female: aggressive mimicry. Chemical defences can be released from different parts of the body: sawfly larvae (terpenoids) orally, blister beetle release through legs cantharidin (a terpenoid)
