Sex ratio estimation and survival analysis for Orthetrum coerulescens (Odonata, Libellulidae)

@inproceedings{Kry2004SexRE,
  title={Sex ratio estimation and survival analysis for Orthetrum coerulescens (Odonata, Libellulidae)},
  author={M M M K{\'e}ry and Lucienne Juillerat},
  year={2004}
}
There is controversy over whether uneven sex ratios observed in mature dragonfly populations are a mere artifact resulting from the higher observability of males. Previous studies have at best made indirect inference about sex ratios by analysis of survival or recapture rates. Here, we obtain direct estimates of sex ratio from capture–recapture data based on the Cormack–Jolly–Seber model. We studied Orthetrum coerulescens (Fabricius, 1798) at three sites in the Swiss Jura Mountains over an… CONTINUE READING