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Comentario sobre "Bateman en la naturaleza: la depredación de la descendencia reduce el potencial de selección
1Animal Ecology, Department of Ecology and Genetics, Uppsala University, Norbyvägen 18D, SE75236 Uppsala, Sweden. goran.arnqvist@ebc.uu.se
Science (New York, N.Y.)
|May 4, 2013
Resumen
La selección sexual y la selección natural no están estrechamente relacionadas en los cuernos grandes. La conclusión anterior se basó en las tasas de supervivencia juvenil que varían anualmente, no en presiones de selección.
Área de la Ciencia:
- Ecología Ecología Ecología.
- Biología evolutiva Biología evolutiva.
- Comportamiento animal Comportamiento animal.
Sus antecedentes:
- Investigaciones previas sugirieron una estrecha relación entre la selección sexual y la selección natural en los cuernos grandes silvestres.
- Esta relación fue reportada por Byers y Dunn en 2012.
Objetivo del estudio:
- Para reevaluar la estrecha relación informada entre la selección sexual y la selección natural en los cuernos grandes.
- Para demostrar que la conclusión anterior se basó en un artefacto metodológico.
Principales métodos:
- Análisis de los datos sobre las poblaciones silvestres de cuerno grande.
- Examen estadístico de la relación entre la mortalidad juvenil y las tasas de supervivencia en diferentes años.
Principales resultados:
- La mortalidad juvenil y las tasas de supervivencia juvenil están negativamente correlacionadas a lo largo de los años.
- Esta correlación negativa a lo largo de los años, no las presiones de selección, explica el patrón observado.
Conclusiones:
- La conclusión de que la selección sexual y la selección natural están estrechamente relacionadas en los cuernos grandes es incorrecta.
- La relación informada anteriormente es un artefacto de la variación interanual en la supervivencia y la mortalidad juveniles.
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