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Maternal correlates of brood sex ratio variation in the lekking lance-tailed manakin Chiroxiphia lanceolata

Silke Laucht, Auteur ; Emily H. DuVal, Auteur ; Bart Kempenaers, Auteur

Dans Journal of Avian Biology (39(2) MAR 2008)

Theory predicts that overall population sex ratios should be around parity. But when individual females can receive higher fitness from offspring of one sex, they may benefit by biasing their brood sex ratios accordingly. In lekking species, hig[...]

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