Adult sex ratio and operational sex ratio exhibit different temporal dynamics in the wild Article Swipe

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Biology Operational sex ratio Mating Sexual selection Population Sex ratio Range (aeronautics) Plover Mating system Demography Charadrius Zoology Ecology Habitat Composite material Materials science Sociology

María Cristina Carmona‐Isunza , Sergio Ancona , Tamás Székely , Alfonso P. Ramallo-González , Medardo Cruz‐López , Martín Alejandro Serrano‐Meneses , Clemens Küpper ·

YOU? · · 2016 · Open Access · · DOI: https://doi.org/10.1093/beheco/arw183 · OA: W2566630636

Lay Summary Sex ratios vary within wild populations, but these variations and the relationship of different sex ratio indices are rarely explored. Using data from a well-monitored polygamous bird population, we show that adult sex ratio (ASR, proportion of males in adult population) and operational sex ratio (OSR, ratio of sexually active males to females) fluctuate over the breeding season and these fluctuations are not correlated, suggesting that OSR is a poor predictor of ASR under polygamy.