Factors predicting male fertilization success in an external fertilizer

  title={Factors predicting male fertilization success in an external fertilizer},
  author={St{\aa}le Liljedal and Geir Rudolfsen and Ivar Folstad},
  journal={Behavioral Ecology and Sociobiology},
In postcopulatory sexual selection both sperm competition and cryptic female choice are considered to be important selective agents, but their relative importance for male fertilization success has received little attention. We tested whether sperm quality, male spawning coloration, male heterozygosity, and genetic overlap with the female explained a male’s fertilization success in controlled in vitro fertilization competition trials between equal numbers of sperm from pairs of male Arctic… CONTINUE READING