Concept
Aposématisme
Concepts associés (28)
Crypsis
In ecology, crypsis is the ability of an animal or a plant to avoid observation or detection by other animals. It may be a predation strategy or an antipredator adaptation. Methods include camouflage, nocturnality, subterranean lifestyle and mimicry. Crypsis can involve visual, olfactory (with pheromones) or auditory concealment. When it is visual, the term cryptic coloration, effectively a synonym for animal camouflage, is sometimes used, but many different methods of camouflage are employed by animals or plants.
Poisson-globe
Les poissons-globes (Tetraodontidae, en français Tétraodontidés ; du grec ancien tetra = quatre et odous = dent) ou poissons-ballons, sont une famille de poissons ayant la capacité de se gonfler. Une autre de leurs caractéristiques est de ne pas avoir de piquants, ce qui les distingue des poissons du genre Diodon qui en ont. La plupart des espèces contiennent des toxines extrêmement puissantes, comme le célèbre Fugu (nom générique donné aux espèces du genre Takifugu, qui fait partie de cette famille).
Müllerian mimicry
Müllerian mimicry is a natural phenomenon in which two or more well-defended species, often foul-tasting and sharing common predators, have come to mimic each other's honest warning signals, to their mutual benefit. The benefit to Müllerian mimics is that predators only need one unpleasant encounter with one member of a set of Müllerian mimics, and thereafter avoid all similar coloration, whether or not it belongs to the same species as the initial encounter.
Monarque (papillon)
Le monarque (Danaus plexippus) est une espèce principalement américaine de lépidoptères de la famille des Nymphalidae et de la sous-famille des Danainae. Ce grand papillon est célèbre pour ses migrations de grande ampleur en Amérique, où il se déplace par groupes de millions d'individus sur des distances pouvant atteindre , deux fois par an, d'août à octobre vers le sud (surtout au Mexique), et au printemps vers le nord. En français : le monarque, plus rarement le grand monarque ou le monarque américain.
Advertising in biology
Advertising in biology means the use of displays by organisms such as animals and plants to signal their presence for some evolutionary reason. Such signalling may be honest, used to attract other organisms, as when flowers use bright colours, patterns, and scent to attract pollinators such as bees; or, again honestly, to warn off other organisms, as when distasteful animals use warning coloration to prevent attacks from potential predators. Such honest advertising benefits both the sender and the receiver.
Disruptive coloration
Disruptive coloration (also known as disruptive camouflage or disruptive patterning) is a form of camouflage that works by breaking up the outlines of an animal, soldier or military vehicle with a strongly contrasting pattern. It is often combined with other methods of crypsis including background colour matching and countershading; special cases are coincident disruptive coloration and the disruptive eye mask seen in some fishes, amphibians, and reptiles.
Automimicry
In zoology, automimicry, Browerian mimicry, or intraspecific mimicry, is a form of mimicry in which the same species of animal is imitated. There are two different forms. In one form, first described by Lincoln Brower in 1967, weakly-defended members of a species with warning coloration are parasitic on more strongly-defended members of their species, mimicking them to provide the negative reinforcement learning required for warning signals to function. The mechanism, analogous to Batesian mimicry, is found in insects such as the monarch butterfly.
Chemical defense
Chemical defense is a strategy employed by many organisms to avoid consumption by producing toxic or repellent metabolites or chemical warnings which incite defensive behavioral changes. The production of defensive chemicals occurs in plants, fungi, and bacteria, as well as invertebrate and vertebrate animals. The class of chemicals produced by organisms that are considered defensive may be considered in a strict sense to only apply to those aiding an organism in escaping herbivory or predation.