Data from: Post-spawning sexual selection in red and white Chinook salmon (Oncorhynchus tshawytscha)

Sarah J. Lehnert, Daniel D. Heath, Robert H. Devlin & Trevor E. Pitcher
Post-copulatory processes, including sperm competition and cryptic female choice (CFC), can play important roles in the maintenance of polymorphisms. In Chinook salmon (Oncorhynchus tshawytscha), color morphs (red and white) exist due to genetic polymorphisms affecting carotenoid deposition in flesh, skin, and gametes. We investigated the role of post-spawning sexual selection in maintaining the polymorphism in a mixed population. First, we compared sperm velocity differences in water between morphs. Next, we measured color-based CFC via 2...
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