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Recruitment in fish populations



Recruitment in fish populations



Fauna 36(1): 25-31



Stock recruitment models are frequently used in population dynamics. The underlying assumptions of the modes is that density-dependent mechanisms operate during the egg and larval stages when enormous mortalities occur. The recruitment curves describe a relationship between the abundance of spawning fish and the recruits they produce. Applications to actual fisheries are not so satisfactory. The dispersion of the points on the graph of recruits against spawners are usually ascribed to a strong influence of environmental conditions. Some other factors influencing recruitment. These include genetic composition, larval and spawning behavior and distributional pattern.

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