Skin color sockeye and kokanee morphs of the Pacific salmon
(Oncorhynchus nerka) raised in a low carotenoid environment.
Arguments
source
Craig, J.K. and C. Foote. 2001. Countergradient variation and
secondary sexual color: phenotypic convergence promotes genetic divergence
in carotenoid use between sympatric anadromous and nonanadromous morphs of
sockeye salmon (Oncorhynchus nerka). Evolution 55: 380-391.