The 4Vn sentinel survey : 1994-2015 / by Timothy C. Lambert. : Fs97-6/3319E-PDF

"Initiated after the 1993 declaration of a moratorium on cod fishing in NAFO statistical subdivision 4Vn (Sydney Bight), this survey is conducted annually in September by commercial longliners under the supervision of the Department of Fisheries and Oceans. The key product of this survey is an abundance index for 4Vn cod. Although cod are targeted, data on other groundfish bycatch are also collected. A subsample of cod are taken ashore for processing where they are weighed and measured, otoliths removed and organ weights recorded along with identification of stomach contents. Thus, in addition to age, length and weight data, information on condition and diet are provided. Also as well as the abundance survey conducted in September, other fishing operations included the monitoring of the outward winter migration of cod from the Gulf of St. Lawrence and a monthly monitoring of cod in Sydney Bight from April to December"--Abstract, page iv.

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