Nova Scotian Autumn Cod Spawning

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Abstract
Investigation by means of commercial and experimental fishing with baited gear, and gill nets, shows that sexually mature cod enter Halifax and St. Margaret bays in early October at a time when the resident cod have moved out to the mouths of these bays.Thereafter, until early December, these fish are taken in spawning condition on shoals at the heads of these bays.Tows with plankton nets take both cod eggs and larvae in and around these bays until late December, but none thereafter until about April.These autumn-spawning cod differ from the regular summer cod of these regions by having a much lower average vertebral count and by spawning in comparatively warm, shoal water at the heads of the bays instead of outside the bays in much cooler water in the late winter.

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