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Reproduction and population dynamics of the brown bullhead ictalurus nebulosus in the riviere aux pins breeding grounds st lawrence river near montreal quebec canada



Reproduction and population dynamics of the brown bullhead ictalurus nebulosus in the riviere aux pins breeding grounds st lawrence river near montreal quebec canada



Canadian Journal of Zoology 60(1): 31-39



Two trap nets set in Riviere aux Pins, near its confluence with the St. Lawrence River, permitted the capture and subsequent marking or tagging of adult brown bullhead to study their reproductive biology and population dynamics. Spawning activity is examined in relation to water temperature and water level which, in 1976 and 1977, was controlled by means of a log weir, to enhance northern pike reproductive success. The study of sex ratio, sexual maturity, gonadosomatic ratio, and fecundity served to characterize the Riviere aux Pins bullhead spawning population. The results of the captures, markings, taggings and recaptures led to the evaluation of total mortality, several aspects of exploitation by sport fishing, movements, population density, biomass, production and yield.

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Reproduction and population dynamics of the brown bullhead, Ictalurus nebulosis (Le Sueur) in the spawning place of the Riviere aux Pins, Saint Lawrence Rivers, near Montreal (Quebec). Canadian journal of zoology = Journal canadien de zoologie 60(1): 31-39, 1982

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