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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.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.838419&sl=0

Publication information
Department/Agency
  • Canada. Fisheries and Marine Service. Research and Development Directorate.
  • Freshwater Institute (Canada)
  • Canada. Fisheries and Marine Service.
TitleLake whitefish (Coregonus clupeaformis (mitchill)) in Southern Indian Lake, Manitoba / by H.A. Ayles.
Series title
  • Technical report = Rapport technique ; no. 640
Publication typeMonograph - View Master Record
Language[English]
FormatDigital text
Electronic document
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.
Publishing information
  • 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.
Author / Contributor
  • Ayles, H.A.
Descriptionvi, 28 p. : maps, ill.
Catalogue number
  • Fs97-7/640E-PDF
Subject terms
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