Spawning stock characteristics and cod recruitment success in the southern Gulf of St. Lawrence / D.P. Swain and G.A. Chouinard.: Fs70-1/2000-148E-PDF

Recruitment rate (defined here as R, the abundance of 3 year old cod, divided by S, the biomass of the spawning stock that produced them) has varied widely for cod in the southern Gulf of St. Lawrence. In particular, the rate of recruitment was remarkably high from the mid 1970s to the early 1980s. Variation in the recruitment rate R/S, may reflect variation in early survival of cod, or variation in the quantity or quality of eggs produced by a unit of spawning stock biomass. This paper tests two predictions related to effects of spawner characteristics on recruitment rate. First, a positive correlation between recruitment rate and measures of the age of spawners (i.e., mean age, proportion of older fish, age diversity) is predicted. The second prediction is of a positive correlation between recruitment rate and measures of the mean size and condition of spawners.

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Publication information
Department/Agency Canada. Department of Fisheries and Oceans.
Canada. Canadian Stock Assessment Secretariat.
Title Spawning stock characteristics and cod recruitment success in the southern Gulf of St. Lawrence / D.P. Swain and G.A. Chouinard.
Series title Canadian Stock Assessment Secretariat research document, 1480-4883 ; 2000/148
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Includes bibliographic references (p. 7).
Publishing information Ottawa : Fisheries and Oceans Canada, 2000.
Author / Contributor Swain, D. P.
Chouinard, G. A. (Ghislain André)
Description 14 p. : fig., graphs, tables.
Catalogue number
  • Fs70-1/2000-148E-PDF
Subject terms Fisheries resources
Salt water fish
Fishing area
Fisheries management
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