00000cam 2200000zi 4500 9.964914 CaOODSP 20260807090337 m o d f cr mn||||||||| 260807e198004##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc x7x7 Fs97-4/1562E-PDF Fedorenko, A. Y., author. Inches Creek chum pilot project, 1970-1978 / by A.Y. Fedorenko AND D.D. Bailey. Vancouver, B.C. : Enhancement Services Branch, Fisheries and Marine Service, Department of Fisheries and Oceans, April 1980. 1 online resource (vii, 47 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Fisheries and Marine Service manuscript report ; 1562 Series statement on title page should read: Canadian manuscript report of fisheries and aquatic sciences. Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 38-39). "The main objective of the Inches Creek chum facility during 1970-1978 was to evaluate the upwelling gravel incubation technique for chum (Oncorhynchus keta) production. In particular, the effects of different egg densities, flows, and planting methods on egg-to-fry survival were tested. The mean annual production of 0.8 million chum fry represented an average egg-to-fry survival of 77%, or an 11 fold increase over the wild Inches Creek fry survival. Mean size of unfed fry was 38.1 mm and 336 mg at release. Mean size of reared 1978 brood year fry was 55.3 mm and 1.3 g. To date, the project has succeeded in tripling the annual Inches Creek chum escapement to approximately 6 - 8,000 adults since 1974. Marine survival of combined wild and hatchery fry from Inches Creek was higher than that of the wild Fraser River chum fry (0.9 - 1.8% vs 0.4 - 1.0%). In the future, all fry will be reared prior to release. Other changes include the use of surface-planting at higher egg densities instead of gravel-layer planting"--Abstract, page vi. Includes abstracts in English and French. Chum salmon Eggs Incubation British Columbia. Chum salmon Productivity British Columbia. Hatchery fishes British Columbia. Hatchery releases British Columbia. Escapement (Fisheries) British Columbia. Saumon keta Œufs Incubation Colombie-Britannique. Saumon keta Productivité Colombie-Britannique. Poissons d'élevage Colombie-Britannique. Lâchers de poissons d'élevage Colombie-Britannique. Échappée (Pêches) Colombie-Britannique. Canada. Department of Fisheries and Oceans, issuing body. Canada. Department of Fisheries and Oceans. Pacific Region. Enhancement Services Branch, issuing body. Canadian manuscript report of fisheries and aquatic sciences ; 1562. (CaOODSP)9.505211 PDF 1.61 MB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-1562-eng.pdf