Antler - Sexual Selection

Sexual Selection

The principal means of evolution of antlers is sexual selection, which operates via two mechanisms: Male-male competition (behaviorally, physiologically) and female mate choice. Male-male competition can take place in two forms. First, they can compete behaviorally where males use their antlers as weapons to compete for access to mates; second, they can compete physiologically where males present their antlers to display their strength and fertility competitiveness to compete for access to mates. Males with the largest antlers are more likely to obtain mates and achieve the highest fertilization success due to their competitiveness, dominance and high phenotypic quality. Whether this is a result of male-male fighting or display, or of female choosiness differs depending on the species as the shape, size, and function of antlers vary between species.

Read more about this topic:  Antler

Other articles related to "sexual selection, selection, sexual":

Sexual Selection - Criticism
... species Darwin neglected a very important factor of natural selection – warning display (known also as aposematism) ... arsenal of visual, audio, olfactory and behavioral features as sexual selection ... Jordania, most of these warning displays were incorrectly attributed by the proponents of sexual selection to the forces of sexual selection ...
Theories Of Humor - Sexual Selection
... See also Sexual selection in human evolution Evolutionary psychologist Geoffrey Miller contends that, from an evolutionary perspective, humour would ... characteristics like humor evolved by sexual selection ...
Sexual Selection In Human Evolution - Sexual Dimorphism - Sexual Anatomy
... The theory of sexual selection has been used to explain a number of human anatomical features ... in humans, when it is present in other primates, may be due to sexual selection by females looking for an honest advertisement of good health in prospective mates ... penis size may have been subject to natural selection, rather than sexual selection, due to a larger penis' efficiency in displacing the sperm of rival ...
Sexual Selection In Human Evolution - Controversies
... The role of sexual selection in human evolution has been considered controversial from the moment of publication of Darwin's book on sexual selection (1871) ... Joan Roughgarden, citing many elements of sexual behavior in animals and humans, that cannot be explained by the sexual-selection model, suggested that the function of sex in human evolution was primarily social ... singing, dancing, body painting, wearing of clothes, Darwin (and proponents of sexual selection) totally neglected another important evolutionary force, intimidation of predators and ...
Sexual Selection In Human Evolution - Phenotype
... Sexual selection has continued to be suggested as a possible explanation for geographical variation in appearance within the human species in modern hypotheses, marriage practices ... unsuccessful in reproducing, and the result is strong selection of males for traits which are adaptive for successful reproduction ... He proposes a link to skin color through selection of males for testosterone-mediated traits which confer an ability to successfully compete for females ...

Famous quotes containing the word selection:

    Judge Ginsburg’s selection should be a model—chosen on merit and not ideology, despite some naysaying, with little advance publicity. Her treatment could begin to overturn a terrible precedent: that is, that the most terrifying sentence among the accomplished in America has become, “Honey—the White House is on the phone.”
    Anna Quindlen (b. 1952)