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Male size composition affects male reproductive variance in Atlantic cod Gadus morhua L. spawning aggregations

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Estimates of Atlantic cod Gadus morhua reproductive success, determined using experimental spawning groups and genetic paternity assignment of offspring, showed that within-group variance in male size correlated positively with the degree of male mating skew, predicting a decrease in male reproductive skew with decreasing size variation among males under natural conditions.

Keywords: Gadus morhua; male reproductive skew; paternity assignment; spawning behaviour; sperm competition

Document Type: Research Article


Publication date: 2006-09-01

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