Abstract

One of the more important items of information required for an understanding of the dynamics of population numbers in marine fish stocks is the rate of replenishment of the stock through its reproductive process. It has been established for the Pacific pilchard, or California sardine (Sardinops caerulea), that some spawning seasons give rise to much larger year-classes than others (Clark, 1939), as measured at the time the year-class reaches commercial age....

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