Tendency of desirable prey species to take on the appearance of less desirable prey species.

Batesian mimicry is seen particularly among . This is so presumably because butterflies otherwise can be "" to predator birds, though also because certainly butterflies have legitimately displayed aposematic coloration that is useful for other species to copy.

Batesian mimicry is also see with otherwise desirably prey displaying the black and yellow coloration otherwise displayed by . Note in any case that Batesian mimicry only works to the extent that the ratio of less desirable prey to desirable prey is sufficiently high that predators can to avoid a particular form of aposematic coloration.

The above considerations of ratios of less desirable to more desirable prey types can be viewed as a form of community frequency-dependent selection where those alleles giving rise to aposematic coloration are selected for only to the extent that they are associated sufficiently often with lower desirability. Similarly, see also Müllerian mimicry.

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