runaway$71406$ - traduzione in spagnolo
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runaway$71406$ - traduzione in spagnolo

SEXUAL SELECTION MECHANISM
Runaway evolution; Runaway sexual selection; Runaway selection
  • cryptic brown]]. <!-- David E. Hill and Jürgen C. Otto. Courtship display of the peacock spider Maratus aquilus (Araneae: Salticidae: Euophryini), December 2019.-->
  • sexually dimorphic]] species
  • The peacock tail in flight, the classic example of an ornament assumed to be a Fisherian runaway
  • The peacock, on the right, is courting the peahen, on the left.

runaway      
n. fugitivo, evasor, perseguido; desertor
run away         
WIKIMEDIA DISAMBIGUATION PAGE
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escaparse, correrse, darse a la fuga, desbocarse, fugarse, huir, pegar carrera
run away         
WIKIMEDIA DISAMBIGUATION PAGE
Runaways (disambiguation); Runaways; Runaway (movie); The Runaway; Runaway (film); Runaway (song); Run Away; Runaway (single); Runaway (disambiguation); Run-Away; Runaway (TV series); Runaway (novel); The Runaways (disambiguation); The run away; The run aways; The run-away; The run-aways; Run-away; Run-aways; Run Away (song); Runaway (short film); Runaway!; The Runaways (movie); Runaway (album); The Runaways (film); Runaways (song)
irse
escaparse
fugarse

Definizione

run away
Flee, fly, escape, elope.

Wikipedia

Fisherian runaway

Fisherian runaway or runaway selection is a sexual selection mechanism proposed by the mathematical biologist Ronald Fisher in the early 20th century, to account for the evolution of ostentatious male ornamentation by persistent, directional female choice. An example is the colourful and elaborate peacock plumage compared to the relatively subdued peahen plumage; the costly ornaments, notably the bird's extremely long tail, appear to be incompatible with natural selection. Fisherian runaway can be postulated to include sexually dimorphic phenotypic traits such as behavior expressed by a particular sex.

Extreme and (seemingly) maladaptive sexual dimorphism represented a paradox for evolutionary biologists from Charles Darwin's time up to the modern synthesis. Darwin attempted to resolve the paradox by assuming heredity for both the preference and the ornament, and supposed an "aesthetic sense" in higher animals, leading to powerful selection of both characteristics in subsequent generations. Fisher developed the theory further by assuming genetic correlation between the preference and the ornament, that initially the ornament signalled greater potential fitness (the likelihood of leaving more descendants), so preference for the ornament had a selective advantage. Subsequently, if strong enough, female preference for exaggerated ornamentation in mate selection could be enough to undermine natural selection even when the ornament has become non-adaptive. Over subsequent generations this could lead to runaway selection by positive feedback, and the speed with which the trait and the preference increase could (until counter-selection interferes) increase exponentially.

Modern description of the same mechanism using quantitative genetic and population genetic models was mainly established by Russell Lande and Mark Kirkpatrick in the 1980s, and are now more commonly referred to as the sexy son hypothesis.