00000nam 2200000zi 4500 9.949231 CaOODSP 20250319101003 m o d f cr mn||||||||| 250318e198411##bcca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc Fs97-6/1330E-PDF Fs97-6/1330E Bams, R. A. (Robert A.) author. Japanese-style and gravel-box incubation of chum salmon (Oncorhynchus keta) compared at the fry stage / by R.A. Bams. Nanaimo, British Columbia : Department of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station, November 1984. ©1984 1 online resource (iv, 23 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 0706-6457 ; no. 1330 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 6-7). "Three successive broods of Big Qualicum River chum salmon (Oncorhynchus keta) were incubated and reared from fertilization to an early fry stage using two techniques: a Japanese-style hatchery technique (JSH), which uses ground water and keeper-channels, and a deep-substrate incubation technique (Box), which uses river water and a gravel medium. Both treatments were replicated each year. The combined effects of the higher temperatures and the lack of a deep gravel substrate resulted in time of development (to 50% emergence) being accelerated by 56 (+1) days in all JSH groups. At emergence, JSH fry were smaller and less advanced than the Box fry but survivals were the same. The JSH fry were ponded and fed Oregon moist pellets for the 8-wk time period created by the differences in techniques. This resulted in substantial size gain of these fry at the time of emergence of the Box fry. Their average fork lengths ranged from 54.5 to 60.4 mm (mean 57.5) vs. 35.8 to 36.9 mm (mean 36.4) in the Box fry; their mean wet weights ranged from 1503 to 2291 mg (mean 1955) vs. 400 to 433 mg (mean 412). Growth rates were calculated and all results are compared with other available sources"--Abstract, page iii. Includes abstracts in English and French. Chum salmon Eggs Incubation British Columbia Vancouver Island. Chum salmon British Columbia Vancouver Island Growth. Hatchery fishes British Columbia Vancouver Island. Fish culture British Columbia Vancouver Island. Saumon keta Œufs Incubation Colombie-Britannique Vancouver, Île de. Saumon keta Colombie-Britannique Vancouver, Île de Croissance. Poissons d'élevage Colombie-Britannique Vancouver, Île de. Pisciculture Colombie-Britannique Vancouver, Île de. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian technical report of fisheries and aquatic sciences ; no. 1330. (CaOODSP)9.504449 PDF 606 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-6/Fs97-6-1330-eng.pdf