Fortune Bay herring : a stock in the process of executing the limbo / by G.H. Winters and J.A. Moores. : Fs70-8/80-76E-PDF
"During the past pentad (1975-80) annual landings of herring in Fortune Bay averaged about 750 t compared with an average of 8000 t for the previous pentad (1969-74). Recently bar seines have replaced purse-seines as the major gear component. The moderate 1974 year-class continues to dominate removals; year-classes since 1974 have been extremely poor. Analyses of biomass levels based on gillnet catch-rate data (1978-80) indicate that the abundance of Fortune Bay herring have been relatively low since the mid-1970's due mainly to a combination of excessive fishing mortalities during the early 1970's and to a sequential production of extremely weak year-classes since then. Biomass levelsare projected to decline to an historical low of 2000 t in 1981. Management action should therefore be directed towards reducing the 1981 catch to the lowest practical level to ensure maximum egg deposition."--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.872481&sl=1
| Ministère/Organisme | Canada. Department of Fisheries and Oceans. |
|---|---|
| Titre | Fortune Bay herring : a stock in the process of executing the limbo / by G.H. Winters and J.A. Moores. |
| Titre de la série | CAFSAC research document ; 80/76 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Caption title. Digitized edtion from print [produced by Department of Fisheries and Oceans]. "Not to be cited without permission of authors." Includes bibliographical references (page 8). Includes abstract in French. |
| Information sur la publication | St. John's, Newfoundland. : Research and Resource Services, Northwest Atlantic Fisheries Centre, Department of Fisheries and Oceans, [1980]. |
| Auteur / Contributeur | Winters, G. H., author. Moores, J. A. (John A.), 1951- author. |
| Description | 1 online resource (17 pages) : illustrations, map. |
| Numéro de catalogue |
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| Descripteurs | Fisheries |