Cephalopods have two main defence strategies: the first consists on reducing the odds of being detected by a predator, while the second focuses on avoiding capture.
Juan Francisco Ruiz +2 more
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A snake of a different color: physiological color change in Arizona black rattlesnakes [PDF]
Coloration may serve a variety of behavioral (e.g., crypsis, communication) and physiological (e.g., thermoregulation, protection) functions for terrestrial ectotherms. However, optimal coloration for a given function may vary over environments (spatial
Jeffrey J. Smith, Melissa Amarello
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There is more to the picture than meets the eye: adaptation for crypsis blurs phylogeographical structure in a lizard [PDF]
Aim: We examined dorsal coloration in and genetic relationships among Iberian populations of the lizard Psammodromus algirus to determine the extent to which the current distribution of phenotypic variation is correlated with phylogeographical history or
Díaz, José A. +5 more
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The evolutionary ecology of decorating behaviour [PDF]
Many animals decorate themselves through the accumulation of environmental material on their exterior. Decoration has been studied across a range of different taxa, but there are substantial limits to current understanding.
Berke SK +8 more
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« A sauts et à gambades » : de cette formule des Essais, la critique a souvent conclu au décousu de leur écriture. Notre travail montre qu'il n'en est rien dans de nombreux chapitres des Essais, en s'appuyant sur l'idée de « cryptique » chez Ramus (Dialectique, 1555) et Canaye (L'Organe, 1589) et sur le concept rhétorique de ductus ou progression du ...
openaire +2 more sources
We conducted a study on interpopulation variation of colour patterns in two congeneric chameleon species, which have an analogous life history. Both species are able to rapidly change colour pattern, and their context-dependent colour patterns often vary
Tammy Keren-Rotem +9 more
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Selection for social signalling drives the evolution of chameleon colour change.
Rapid colour change is a remarkable natural phenomenon that has evolved in several vertebrate and invertebrate lineages. The two principal explanations for the evolution of this adaptive strategy are (1) natural selection for crypsis (camouflage) against
Devi Stuart-Fox, Adnan Moussalli
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Functional significance of highly variable colouration in the shore skink (Oligosoma smithi) : a thesis presented in partial fulfilment of the requirements for the degree of Doctor in Philosophy in Ecology at Massey University, Albany, New Zealand [PDF]
Variation in animal colouration is attributed to several biological functions, a key one being camouflage. Background-matching is a camouflage strategy where prey conceal themselves from predators by resembling their immediate backgrounds.
Baling, Marleen
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Gloger's Rule or Historical Conjecture? Tests in Mammals
Gloger's rule states that homeotherms are darker at lower latitudes; however, a number of 19th‐century naturalists also suggested that animals are more brightly coloured in the tropics than in temperate regions. Using phylogenetic comparative methods, we
Natasha Howell, Tim Caro
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Egg colouration in mountain bluebirds (Sialia currucoides): A sexually selected indicator of female quality? [PDF]
An adaptive explanation for the blue-green colouration of some avian eggshells has long interested researchers and naturalists alike. Unlike brown and maculated eggs that probably evolved through selection for crypsis, blue-green eggs would likely appear
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