The effects of body size and sexual dimorphism on the reproductive behaviour of sockeye salmon, Oncorhynchus nerka

  title={The effects of body size and sexual dimorphism on the reproductive behaviour of sockeye salmon, Oncorhynchus nerka
  author={Thomas P. Quinn and Chris J. Foote},
  journal={Animal Behaviour},
  • T. Quinn, C. Foote
  • Published 1 October 1994
  • Environmental Science, Biology
  • Animal Behaviour
Abstract Abstract. Factors associated with the evolution of sexual dimorphism in sockeye salmon were examined by relating individual behavioural correlates of reproductive success with morphological measurements in both sexes. Adult salmon were captured, measured and tagged, then released and observed in Iliamna Lake, Alaska. Males were generally larger than females (447 versus 428 mm) and had larger dorsal humps and more elongated jaws for their length. Indices of male reproductive success… 
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