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

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

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Adult sex ratio (ASR, the proportion of adult males in the adult population) and operational sex ratio (OSR, the proportion of sexually active males in the mating pool) are fundamental properties of breeding populations and they are often linked to mating systems and sexual selection. However, ASR and OSR emerge via different routes in a population and may exhibit different temporal patterns. Here, we use data from a well-monitored polygamous snowy plover Charadrius nivosus population sampled over 3 consecutive breeding seasons to investigate whether temporal changes in ASR relate to changes in OSR. We found that snowy plovers exhibited malebiased ASR and OSR. Consistent with theoretical expectations, OSR was more variable than ASR. However, there was no consistent relationship between OSR and ASR: In only 1 of the 3 study years we found a weak positive relationship (r = 0.22). The lack of association was corroborated by time series analyses and sensitivity tests. Our work therefore suggests that ASR and OSR exhibit different temporal patterns in a polygamous population, and we call for further theoretical and empirical studies that analyze their relationship across a range of different breeding systems.

Original languageEnglish
Pages (from-to)523-532
Number of pages10
JournalBehavioral Ecology
Volume28
Issue number2
Early online date2 Jan 2017
DOIs
Publication statusPublished - 1 Apr 2017

Fingerprint

sex ratio
reproductive strategy
breeding population
sexual selection
breeding season
Charadrius alexandrinus
Charadrius
Charadriidae
time series
breeding
mating systems
time series analysis
testing
test

Keywords

  • Adult sex ratio
  • Mating system
  • Operational sex ratio
  • Social environment
  • Temporal variation
  • Within-season variation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

Carmona-Isunza, M. C., Ancona, S., Székely, T., Ramallo-González, A. P., Cruz-López, M., Serrano-Meneses, M. A., & Küpper, C. (2017). Adult sex ratio and operational sex ratio exhibit different temporal dynamics in the wild. Behavioral Ecology, 28(2), 523-532. https://doi.org/10.1093/beheco/arw183

Adult sex ratio and operational sex ratio exhibit different temporal dynamics in the wild. / Carmona-Isunza, Mariá Cristina; Ancona, Sergio; Székely, Tamás; Ramallo-González, Alfonso P.; Cruz-López, Medardo; Serrano-Meneses, Martín Alejandro; Küpper, Clemens.

In: Behavioral Ecology, Vol. 28, No. 2, 01.04.2017, p. 523-532.

Research output: Contribution to journalArticle

Carmona-Isunza, MC, Ancona, S, Székely, T, Ramallo-González, AP, Cruz-López, M, Serrano-Meneses, MA & Küpper, C 2017, 'Adult sex ratio and operational sex ratio exhibit different temporal dynamics in the wild', Behavioral Ecology, vol. 28, no. 2, pp. 523-532. https://doi.org/10.1093/beheco/arw183
Carmona-Isunza MC, Ancona S, Székely T, Ramallo-González AP, Cruz-López M, Serrano-Meneses MA et al. Adult sex ratio and operational sex ratio exhibit different temporal dynamics in the wild. Behavioral Ecology. 2017 Apr 1;28(2):523-532. https://doi.org/10.1093/beheco/arw183
Carmona-Isunza, Mariá Cristina ; Ancona, Sergio ; Székely, Tamás ; Ramallo-González, Alfonso P. ; Cruz-López, Medardo ; Serrano-Meneses, Martín Alejandro ; Küpper, Clemens. / Adult sex ratio and operational sex ratio exhibit different temporal dynamics in the wild. In: Behavioral Ecology. 2017 ; Vol. 28, No. 2. pp. 523-532.
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