Lecture 2 - body is shaped what they are looking like....

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Lecture 2 Habitats that have vertical lines tend to have animals with vertical lines o For example the American Bittern in cattail marsh o Background matching can include bark mimicry (ie. Eastern Screech-Owl or Gray Tree Frog). Can also be seasonal (ie. Snowshoe Hare) o Discreet patches of colour can also be used for concealment o Many songbirds have a stripe above the eye and a line through the eye for camouflage Called Disruptive Patterns – breaks up shape Can breast bands be Disruptive Patterns? Yes. Killdeer (Bird) What about chin straps? Yes. Or necklaces? Yes. Canada Goose Loon Leopard Frog have dark bands that line up – Coincident Disruptive Coloration Not only colour makes animals camouflaged. Shape does too (Question Mark Butterfly) is an angle-winged butterfly. When the wings are up, it looks like a dead leaf. Another angle-winged butterfly is a Mourning Cloak . Can also be called Dead leaf mimic (background mimicry) – the
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Unformatted text preview: body is shaped what they are looking like. Masquerade: disguise Twig Mimic: inchworm feed at night and hide during the day Thorn (or spine or prickle) mimic Tree Hopper Live Leaf mimic Luna Moth Camouflage can be noticeable and not an element of the background Spittlebug Fungus looking on trees or twigs Woolly Aphids Bird dropping mimic Giant Swallowtail butterfly or bird dropping moth Animal in ponds often use colour patterns for a different type of camouflage. Whirligig Beetles: some surface insects are BICOLOURED black above and white below White-tailed Deer are also dark above and light below. Why? o Countershading self-shadow concealment Camouflage is not fail proof. There is always natural selection working against as well. When plan A fails (camouflage fails), animals when then turn to plan B, Startle Patterns....
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This note was uploaded on 10/20/2011 for the course BIOL 1902 taught by Professor Runtz during the Fall '08 term at Carleton CA.

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