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Müllerian mimicry was proposed by the German zoologist and naturalist Fritz Müller (1821–1897). An early proponent of evolution, Müller offered the first explanation for resemblance between certain butterflies that had puzzled the English naturalist Henry Walter Bates in 1862.
Cancer in cats is the leading cause of death among cats. It is caused by uncontrolled cell growth, and affects a wide range of cell types and organs in the body. Feline cancer initially manifests as a lump or bump on any part of the body.
Mimicry is an evolved resemblance between an organism and another object, often an organism of another species. Mimicry may evolve between different species, or between individuals of the same species. Often, mimicry functions to protect from predators. [11] Mimicry systems have three basic roles: a mimic, a model, and a dupe.
Most of these octopuses use Batesian mimicry, selecting an organism repulsive to predators as a model. [33] [34] In Müllerian mimicry, two or more aposematic forms share the same warning signals, [27] [35] as in viceroy and monarch butterflies. Birds avoid eating both species because their wing patterns honestly signal their unpleasant taste. [28]
Based on phylogenic evidence, it is known that mimicry in the North American admirals was a driver of speciation. An essential condition for the evolution of mimicry was the presence and abundance of unpalatable models. Mimetic evolution also involved direct selection with the model acting as a "starting block" for the mimic to evolve against. [19]
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Müllerian mimicry is named after and discovered by him. This phenomenon concerns the resemblance between two or more unpalatable species which are protected from predators capable of learning . The protection is often a noxious chemical, perhaps gained from the larva eating a particular plant; or it may be a sting or other defence.
Müllerian may refer to: Müllerian mimicry, a type of mimicry or convergence named after Fritz Müller; Müllerian ducts, which enter the cloaca of an embryo (named after Johannes Peter Müller) Mullerian anomalies are structural anomalies caused by errors in embryonic müllerian duct development; Mixed Müllerian tumor