Mate choice
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Mate choice is one of the primary mechanisms under which evolution can occur. It is characterized by a "selective response by animals to particular stimuli" which can be observed as behavior. In other
Mate choice is highly visible in lek mating. Here, black grouse males gather in a quagmire and the females then arrive and observe the male before choosing one.
Ronald Fisher in 1913
The peacock tail in flight, the classic example of a Fisherian runaway
A male satin bowerbird guards its bower from rival males in the hopes of attracting females with its decorations.
Reproductive success
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Reproductive success is an individual's production of offspring per breeding event or lifetime. This is not limited by the number of offspring produced by one individual, but also the reproductive suc
Mate choice
…desire mates who have a colourful plumage, then this trait will increase in frequency over time as male peacocks with a colourful plumage will have more reproductive success. Further investigation of this concept, has found that it is in fact the specific trait of blue and green colour near the eyespot that seems to increase…
A sperm fertilizing an egg in sexual reproduction is one stage of reproductive success.