NAFO posted on November 01, 1980 10:14
Terry D. Beacham
Department of Fisheries and Oceans, Marine Fish Division
P. O. Box 1006, Dartmouth, Nova Scotia, Canada B2Y 4A2
Stephen J. Nepszy
Ontario Ministry of Natural Resources, Lake Erie Research Station
R. R. No.2, Wheatley, Ontario, Canada NOP2PO
Source - Journal of Northwest Atlantic Fishery Science, Volume 1: 49-54
ISSN-0250-7408
Beacham, T.D. and Nepszy, SJ. 1980. Some Aspects of the Biology of White Hake, Urophycis tenuis, in the Southern Gulf of St. Lawrence. J. Northw. Atl. Fish. Sci. 1: 49-54. https://doi.org/10.2960/J.v1.a5
Abstract
Various aspects of the biology of white hake in the southern Gulf of St. Lawrence were investigated from commercial and research survey data collected between 1965 and 1978. Nominal catches have generally declined from an annual average of 5,400 metric tons in 1960-69 to 4,800 tons in 1970-78. Length compositions of white hake landed by otter trawlers indicate a higher proportion of larger fish in the mid- 1970's than in the mid-1960's, the difference probably being due to a change in fishing practices. There was no difference in the length-weight relationships of males and females, but males attained sexual maturity at smaller sizes than did females. Comparable length-at-age data for Div. 4T and 4X show considerably faster growth in Div. 4X, indicating that growth may be inversely related to temperature. Limited observations on fecundity indicate that white hake may be among the most fecund on the commercially- exploited fishes in the Northwest Atlantic.
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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - December 1980
Publication Type - Journal Article
Descriptors - biological characteristics, Gulf of St. Lawrence, white hake
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Citation: Beacham, T.D. and Nepszy, SJ. 1980. Some Aspects of the Biology of White Hake,
Urophycis tenuis, in the Southern Gulf of St. Lawrence. J. Northw. Atl. Fish. Sci. 1: 49-54. https://doi.org/10.2960/J.v1.a5