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Assessment of energy expenditure during spawning by male sockeye salmon, Oncorhynchus nerka, at various sex ratios in the spawning ground



Assessment of energy expenditure during spawning by male sockeye salmon, Oncorhynchus nerka, at various sex ratios in the spawning ground



Journal of Ichthyology 26(1): 89-97



Data were obtained on the metabolic rate (oxygen consumption) and milt production of 66 large, medium and small (3, 2 and 1 yr of ocean life resp.) when mixed with at different sex ratios. The were studied in groups of a single age-class. On the basis of milt production and behavioural dominance, the of each age-class were divisible into 2 or 3 subgroups, designated alpha , beta and gamma.

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Accession: 001533055

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