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Background
Abundance: Artificially high or low numbers of precocious males may harm wild populations through either competitive or genetic mechanisms.
Distribution: the impact hatchery precocious males have upon the wild population is influenced by proximity to spawning females, affecting reproductive success.
Size and Behavior: differences in size and behavior (dominance) between hatchery and wild precocious males may also influence proximity to female spawners, and reproductive success.
Notes: