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Las señales olfativas influyen en la elección de la hembra en dos antílopes reproductores de lek
1Large Animal Research Group, Department of Zoology, Cambridge, UK.
Nature
|April 16, 1992
Resumen
Las hembras de los ungulados prefieren territorios específicos en las charcas, atraídas por señales olfativas en el suelo. La transferencia de suelo de territorios exitosos a territorios no exitosos aumentó las visitas y apareamientos femeninos diez veces, destacando el olor.
Área de la Ciencia:
- Etología Etología Etología.
- Comportamiento animal Comportamiento animal.
- Estrategias reproductivas estrategias reproductivas.
Sus antecedentes:
- El éxito de apareamiento en leks a menudo se atribuye a la elección femenina de fenotipos masculinos.
- Sin embargo, las hembras de ungulados muestran preferencia por el territorio independientemente de la presencia del macho.
- Se supone que las señales olfativas en el suelo influyen en la selección del territorio femenino.
Objetivo del estudio:
- Investigar el papel de las señales olfativas en la elección del territorio femenino en los leks.
- Para determinar si el suelo de los territorios exitosos atrae a las hembras a los no exitosos.
Principales métodos:
- La capa superior del suelo se transfirió entre territorios exitosos y no exitosos en leks de dos especies de antílopes reduncinos.
- Las visitas y la frecuencia de apareamiento de las hembras se registraron en los territorios manipulados.
Principales resultados:
- La transferencia de la capa superior del suelo de los territorios exitosos a los no exitosos dio como resultado un aumento de diez veces en el número de hembras y apareamientos en los territorios previamente no exitosos.
- Esto sugiere que las hembras se sintieron atraídas por el suelo por señales olfativas acumuladas del uso previo de las hembras.
Conclusiones:
- Las hembras unguladas son atraídas a los territorios por señales olfativas en el suelo, probablemente derivadas del uso previo de las hembras.
- Esta atracción olfativa puede influir significativamente en la variación del éxito del apareamiento entre los machos en leks.
- Los procesos estocásticos, impulsados por la atracción basada en el olor, pueden desempeñar un papel crucial en la dinámica de apareamiento de lek.
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