Male size composition affects male reproductive variance in Atlantic cod Gadus morhua L. spawning aggregations |
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| Authors: | D. Bekkevold,&dagger |
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| Affiliation: | Danish Institute for Fisheries Research, Department of Inland Fisheries, Vejlsøvej 39, DK-8600 Silkeborg, Denmark |
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| Abstract: | 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. |
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| Keywords: | Gadus morhua male reproductive skew paternity assignment spawning behaviour sperm competition |
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