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Fecundity selection, also known as fertility selection, is the fitness advantage resulting from selection on traits that increases the number of offspring (i.e. fecundity). [1] Charles Darwin formulated the theory of fecundity selection between 1871 and 1874 to explain the widespread evolution of female-biased sexual size dimorphism (SSD ...
Mate choice is a major component of sexual selection, another being intrasexual selection. Ideas on sexual selection were first introduced in 1871, by Charles Darwin, then expanded on by Ronald Fisher in 1915. At present, there are five sub mechanisms that explain how mate choice has evolved over time.
Drosophila melanogaster (shown mating) is an important model organism in sexual conflict research.. Sexual conflict or sexual antagonism occurs when the two sexes have conflicting optimal fitness strategies concerning reproduction, particularly over the mode and frequency of mating, potentially leading to an evolutionary arms race between males and females.
Fecundity selection builds on that idea. This idea claims that the genetic selection of traits that increase an organism's fecundity is, in turn, advantageous to an organism's fitness. [10] Fecundity Schedule. Fecundity Schedules are data tables that display the patterns of birth amongst individuals of different ages in a population.
They found sampling biases, mathematical errors, and selective presentation of data. [ 10 ] A 2012 review by Zuleyma Tang-Martínez concluded that various empirical and theoretical studies, especially Gowaty's reproduction of Bateman's original experiment, pose a major challenge to Bateman's conclusions, and that Bateman's principle should be ...
The disposable soma theory of aging tells us that a longer lifespan will come at the cost of reproduction and thus longevity is not always correlated with high fecundity. [ 2 ] [ 3 ] Parental investment is a key factor in reproductive success since taking better care to offspring is what often will give them a fitness advantage later in life. [ 4 ]
Sexual selection is an evolutionary concept that has been used to explain why, in some species, male and female individuals behave differently in selecting mates. In 1930, Ronald Fisher wrote The Genetical Theory of Natural Selection, [3] in which he introduced the modern concept of parental investment, introduced the sexy son hypothesis, and introduced Fisher's principle.
Sexual cannibalism is when an animal, usually the female, cannibalizes its mate prior to, during, or after copulation. [1] This trait is observed in many arachnid orders, several insect and crustacean clades, [ 2 ] gastropods , and some snake species.