pollination, crypsis, aposematic coloration, and mimicry
DESCRIPTION
Pollination, Crypsis, Aposematic Coloration, and Mimicry. 2-22-05. pollination. To transfer pollen from an anther to a stigma. stigma. anther. Orchid bees are both beautiful and good pollinators. Aposematic coloration. - PowerPoint PPT PresentationTRANSCRIPT
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Pollination, Crypsis, Aposematic Coloration, and Mimicry
2-22-05
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pollinationTo transfer pollen from an anther to a stigma
anther
stigma
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Orchid bees are both beautiful and good pollinators.
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Aposematic colorationconspicuous coloration or markings of an animal serving to warn off predators
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Chinese Red-bellied Newt
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Chinese Red-bellied Newt
If an animal has a dull back and bright undersides, the Unken Reflex may be used. They flash the bright colors, and frighten the predator.
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CrypsisCamouflage; blending in with surroundings
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Killdeer on nest
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The Fer-de-Lance relies on crypsis.
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VALUE OF COUNTERSHADING
• Many aquatic/marine animals are dark on top and light on the bottom. This is so predators approaching from the top see a dark back against a dark background, and predators from below see a light venter against a light sky.
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mimicrythe resemblance of an animal species to another species or to natural objects; provides concealment and protection from predators
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TYPES OF MIMICRY
• Batesian mimicry: The model is poisonous/venomous, and the mimic is harmless.
• Müllerian mimicry: The model is poisonous/venomous, and the mimic is, too.
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The mimic - Milk snake - non-venomous
The model - Coral snake - venomous
BATESIAN MIMICRY
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MORE NON-VENOMOUS BATESIAN MIMICS
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ANOTHER BATESIAN MIMIC.
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Mimicry is favored by selection and passed on to future generations (evolution)