Knowra Animal coloration Animal coloration Animal coloration comprises the colors and patterns produced by pigments, microscopic structures, or both. It can support camouflage, communication, thermoregulation, and other functions.
Melanin : A group of pigments that produce brown, black, reddish, and other colors in animals and other organisms. Melanin supplies dark tones and can also strengthen or protect colored tissues.
Camouflage : Concealment achieved by reducing an organism’s detectability or recognition in its surroundings. Animal coloration can match backgrounds, break up outlines, or mislead observers.
Visible spectrum : The range of electromagnetic wavelengths detectable by the human visual system. Animal colors arise from interactions with light, though many species detect wavelengths humans cannot see.
Pigment : A substance that absorbs selected wavelengths of light and thereby contributes color. Pigments create coloration through selective absorption, unlike purely structural effects.
Sensory drive : Evolutionary change shaped by interactions between environmental conditions, sensory systems, and signal transmission. It explains how habitats and receiver vision can shape animal color signals.
Structural coloration : Color produced when microscopic structures selectively reflect, scatter, or interfere with light. Many bright animal colors arise from optical structures rather than pigments.
Aposematism : The use of conspicuous signals to advertise defenses such as toxicity or painful stings. Bright warning colors can teach predators to avoid defended prey.
Animal visual system : The sensory structures and neural processes animals use to detect and interpret visual information. A color pattern’s signal depends on the vision of the animal that sees it.
Structural color : Color produced by a material’s microscopic structure interacting with light rather than by selective pigment absorption. This is the optical alternative to pigment-based animal coloration.
Honest signaling : Communication in which a signal reliably conveys information about a sender’s condition or quality. Some color ornaments may reveal condition, but the reliability of particular signals requires explanation.
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