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The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
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Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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Obtaining Specimens with Slowed, Accelerated and Reversed Aging in the Honey Bee Model
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Selectividad social en los chimpancés salvajes envejecidos

Alexandra G Rosati1, Lindsey Hagberg2, Drew K Enigk3

  • 1Departments of Psychology and Anthropology, University of Michigan, Ann Arbor, MI, USA. rosati@umich.edu zarin.machanda@tufts.edu.

Science (New York, N.Y.)
|October 23, 2020
PubMed
Resumen
Este resumen es generado por máquina.

Los chimpancés machos que envejecen desarrollan más amistades mutuas y cambian hacia interacciones sociales positivas. Esto sugiere que la selectividad social puede evolucionar sin un pensamiento futuro complejo, ofreciendo información evolutiva sobre los patrones de envejecimiento social humano.

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Área de la Ciencia:

  • Primatología
  • Antropología evolutiva
  • Ecología del comportamiento

Sus antecedentes:

  • La teoría de la selectividad socioemocional postula que los humanos priorizan las relaciones cercanas en el envejecimiento debido a la orientación temporal futura.
  • Comprender las raíces evolutivas del envejecimiento social requiere examinar a los primates no humanos.

Objetivo del estudio:

  • Para probar elementos clave de la teoría del envejecimiento social humano en chimpancés salvajes.
  • Investigar si la selectividad social surge sin una cognición compleja orientada al futuro.

Principales métodos:

  • Análisis longitudinal de datos sobre el comportamiento social de los chimpancés salvajes.
  • Examinar los cambios en la calidad de la amistad, los tipos de interacción social y la soledad con la edad.

Principales resultados:

  • Los chimpancés machos envejecidos exhiben amistades más mutuas y equitativas en comparación con los machos más jóvenes.
  • Los machos mayores pasan más tiempo solos pero también aumentan la socialización con parejas clave.
  • Se observa un cambio en la esperanza de vida de las interacciones agonísticas a las afiliaciones en los machos.

Conclusiones:

  • La selectividad social en el envejecimiento puede surgir independientemente de la cognición compleja del tiempo futuro.
  • Los patrones de envejecimiento social de los chimpancés proporcionan un contexto evolutivo para el comportamiento social humano.
  • Los hallazgos cuestionan la necesidad de una cognición orientada al futuro para desarrollar preferencias sociales relacionadas con la edad.