Lake whitefish (Coregonus clupeaformis (mitchill)) in Southern Indian Lake, Manitoba / by H.A. Ayles. : Fs97-7/640E-PDF
The spawning and population characteristics of lake whitefish, (Coregonus clupeaformis), from Southern Indian Lake, are discussed. Whitefish spawn in shallow areas of rock and boulders. Temperature appears to trigger the spawning act. Whitefish (males and femailes) mature at an average age of 8.8 years. Growth and condition are good for lake whitefish in most regions of this large and complex lake. Different year class strengths appear to exist. Mortality rates vary from 0.43-0.70. The flow of the Churchill River through this lake has a strong influence on the productivity of the lake and therefore on the available commercial yield of whitefish. Commercial fishing of whitefish yields, on the average, 400, 000 kilograms per year.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.838419&sl=1
| Ministère/Organisme | Canada. Fisheries and Marine Service. Research and Development Directorate. Freshwater Institute (Canada) Canada. Fisheries and Marine Service. |
|---|---|
| Titre | Lake whitefish (Coregonus clupeaformis (mitchill)) in Southern Indian Lake, Manitoba / by H.A. Ayles. |
| Titre de la série | Technical report = Rapport technique ;no. 640 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | "This is the eighty-ninth Technical Report from the Research and Development Directorate, Freshwater Institute, Winnipeg, Manitoba." Digitized edition from print. Includes bibliographic references. Electronic monograph in PDF format. |
| Information sur la publication | Winnipeg : Department of the Environment, Fisheries and Marine Service, Research and Development Directorate = Ministère de l'Environnement, Service des Pêches et des Sciences de la mer, Direction de la Recherche et Développement, 1976. |
| Auteur / Contributeur | Ayles, H.A. |
| Description | vi, 28 p. : maps, ill. |
| Numéro de catalogue |
|
| Descripteurs | Lakes Freshwater fish |
Demander des formats alternatifs
Pour demander une publication dans un format alternatif, remplissez le formulaire électronique des publications du gouvernement du Canada. Utilisez le champ du formulaire «question ou commentaire» pour spécifier la publication demandée.- Date de modification :