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El control de la reina de la relación sexual en las hormigas de fuego
1Laboratory of Ethology and Animal Cognition, FRE-CNRS 2382, University Paul-Sabatier, Toulouse Cedex 31062, France.
Science (New York, N.Y.)
|August 18, 2001
Resumen
Las reinas hormigas influyen en las relaciones sexuales de la colonia, desafiando la idea de que las trabajadoras siempre controlan la reproducción. Los intercambios de reinas revelaron que las reinas pueden manipular las relaciones sexuales controlando la puesta de huevos, lo que afecta a la crianza de hormigas obreras de machos y hembras.
Área de la Ciencia:
- Biología evolutiva Biología evolutiva.
- Ecología del comportamiento Ecología del comportamiento.
- Los insectos sociales son insectos sociales.
Sus antecedentes:
- La determinación del sexo haplodiploide en las hormigas crea un conflicto entre las reinas y las obreras sobre las relaciones sexuales óptimas de la colonia.
- Las relaciones sexuales sesgadas observadas con las hembras en muchas especies de hormigas sugieren que las trabajadoras a menudo dominan este conflicto.
Objetivo del estudio:
- Para investigar el papel de las reinas en la determinación de las relaciones sexuales de la colonia en la hormiga de fuego, Solenopsis invicta.
- Para probar si las reinas pueden anular el control de los trabajadores de la asignación de sexo.
Principales métodos:
- Intercambiaron reinas entre colonias de hormigas de fuego con distintas proporciones sexuales orientadas hacia los machos y las hembras.
- Monitoreó los sesgos de la proporción de sexos resultantes de las colonias adoptantes.
Principales resultados:
- Los intercambios de reinas rápidamente invirtieron los sesgos de la proporción de sexos de las colonias adoptantes.
- Se observaron diferencias significativas en la proporción de sexos de los huevos puestos por las reinas de las colonias especializadas de machos y hembras.
Conclusiones:
- Las reinas de Solenopsis invicta pueden ejercer control sobre las relaciones sexuales de la colonia.
- Las reinas pueden limitar la producción de crías femeninas para garantizar la crianza de sexuales masculinos, lo que influye en la proporción final de inversión sexual.
- Esta manipulación impulsada por la reina ayuda a explicar las relaciones de inversión sexual intermedias observadas en las hormigas.
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