Research Document - 2004/112
Preliminary results from the groundfish and shrimp multidisciplinary survey from August 2004 in the northern Gulf of St. Lawrence
By Bourdages, H., D. Archambault, B. Morin,
A. Fréchet, L. Savard, F. Grégoire, R. Dufour
Abstract
As a result of the delays in putting the CCGS Alfred Needler into operation, the August 2004 multidisciplinary groundfish and shrimp survey in the northern Gulf of St. Lawrence was conducted aboard the CCGS Teleost, which itself suffered major damage, delaying the start of the mission. The survey was conducted between August 15 and September 2, corresponding to a period that was just over half of the time initially planned. A total of 130 tows were made throughout the area, 95% of which were successful.
Summary findings for catch rates, catch rate distributions and size frequency distributions are presented for 14 species, including the 4 species targeted by the survey (cod, Greenland halibut, redfish and Northern shrimp). However, the 2004 findings are preliminary and must be considered as such until laboratory analyses and data validation have been completed.
With the exception of data on the spatial distribution of catches, data obtained during this survey cannot be compared with data obtained during previous missions aboard the CCGS Alfred Needler until conversion indices for each species will be calculated using data obtained during comparative missions.
Data gathered in 2004 on the catch distribution of the various species indicate a pattern similar to those observed in previous years aboard the CCGS Alfred Needler.
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