Density-dependent warning coloration
نویسندگان
چکیده
منابع مشابه
Aposematic (Warning) Coloration in Plants
Aposematic (warning) coloration is a common defense in plants, although it was largely ignored before 2001. The fact that many aposematic animals use both plant-based pigments and sequestered poisonous molecules to become aposematic emphasizes the absurdity of neglecting the aposematic nature of so many plants. Similar to the situation in animals, aposematic coloration in plants is commonly yel...
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spatial frequencies (as projected onto the retina) and these will dominate perceptual grouping mechanisms. With increasing distance, the highest frequencies are lost, and the components of the visual scene to which the viewer is most sensitive change systematically [10]. The multi-scale processing of images has been exploited to create hybrid pictures that vary with distance in, for example, pe...
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Warning coloration is a widespread strategy to alert predators about prey unprofitability. The success of this strategy partly depends on predators being able to learn and recognize certain signals as indicators of toxicity, and theory predicts that this is easier if signals converge on similar colours. However, the diversity in warning signal form is astonishing, contradicting predictions. Her...
متن کاملConstrained camouflage facilitates the evolution of conspicuous warning coloration.
The initial evolution of aposematic and mimetic antipredator signals is thought to be paradoxical because such coloration is expected to increase the risk of predation before reaching a stage when predators associate it effectively with a defense. We propose, however, that constraints associated with the alternative strategy, cryptic coloration, may facilitate the evolution of antipredator sign...
متن کاملAposematic (warning) coloration associated with thorns in higher plants.
Aposematic coloration, a well-known phenomenon in animals, has been given little attention in plants. Here I discuss two types of conspicuousness of thorns which are typical of many plant species: (1) colorful thorns, and (2) white spots, or white and colorful stripes, associated with thorns in leaves and stems. Both types of aposematic coloration predominate the spine system of taxa rich with ...
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ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/16609