Population Biology and Management of the Alewife (Alosa pseudoharengus) in Maine

摘要

Field studies of anadromous alewife populations have demonstrated that juvenile growth rates are related to their abundance. The data agree with a hypothetical inverse parent-progeny relationship. Information on the production of juveniles at Damariscotta Lake, and from pond stocking experiments in 1977, suggests that the increase in production of juveniles resulting from an increase in spawning stock size is asymptotic at the levels the author has measured thus far. It is probable that, given the opportunity to overstock a lake with ripe adults, a dome-shaped reproduction curve could be demonstrated. Stocking experiments have demonstrated that the introduction of alewives, in some instances, may improve municipal drinking water quality.