Principi del handicap

El principi del handicap és una hipòtesis proposta originalment en 1975 pel biòlec Amotz Zahavi per a explicar cóm l'evolució pot fer que es produïxquen senyals de bones intencions entre animals que tenen una motivació òbvia per a enganyar a l'atre o per a enganyar-se mútuament.

S'ha sugerit que vehículs de lux són senyals de handicap

El principi del handicap sugerix que eixes senyals deuen comportar un cost per al portador, puix tals senyals consistixen en alguna característica que no pot ser afrontada per atres individus. Per eixemple, en el cas de la selecció sexual, la teoria sugerix que els individus en gran eficàcia biològica mostren este estatus per mig d'un comportament desventajoso o una constitució física que merma les seues qualitats en atres terrenys. L'idea central és que les traces de la selecció sexual actuen com a senyals d'ostentació, mostrant la capacitat de donar-se el lux de desperdiciar un recurs simplement per malbarat. El receptor sap que la traça indica calitat perque individus de calitat inferior no poden permetre's el lux de tals malbarats extravagants. Per eixemple, la coa del pavo real permet discernir la calitat del mascle, pero al mateix temps és una extremitat engorrosa i pesada.

Vore també

• Aposematismo

Referències

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34.^ For footage of this, see Attenborough, D. (1990) The Trials of Life, Episode 10. BBC