00000nam 2200000zi 4500 9.950071 CaOODSP 20250414103743 m o d f cr mn||||||||| 250414e198807##bcca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre Fs97-6/1632E-PDF Fs97-6/1632E Bilton, H. T., author. The body area and size that chinook, coho, and chum salmon fry first form their scales / by H.T. Bilton. Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, July 1988. ©1988 1 online resource (iv, 17 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 0706-6457 ; no. 1632 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 6). "Scales were removed from 25 body positions from each of 100 chinook, 160 coho, and 130 chum fry over the period of March 15 to June 26, 1985. The entire left side of each fry was examined for the presence and distribution of scales. Scale samples were removed from each fish from designated body positions and were subsequently studied under the microscope at a magnification of 250 times. The total number of circuli were counted and recorded. The results indicated that scales began forming on chinook and coho fry when they had reached between 39-41, and 37-40 mm, respectively. There was some suggestion that chum fry formed their scales at 41-42 mm. In each of the three species, scales first formed just above and below the lateral line. For chinook fry, scales first extended from the mid-point of the dorsal fin posteriorally to the caudal fin. For chum fry, scales first appeared in the area of the preferred scale and extended posteriorally to the caudal fin. Unlike the other two species, the area of scale formation for coho was much more limited, first appearing in a relatively narrow area, at a point mid-way between the operculum and the origin of the dorsal fin. In all three species, scales subsequently formed outwards, towards the back and the belly"--Abstract, page iii. Includes abstracts in English and French. Pacific salmon Infancy. Pacific salmon Size. Pacific salmon Anatomy. Scales (Fishes) Saumoneau du Pacifique. Saumons du Pacifique Taille. Saumons du Pacifique Anatomie. Écailles de poisson. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian technical report of fisheries and aquatic sciences ; no. 1632. (CaOODSP)9.504449 PDF 592 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-6/Fs97-6-1632-eng.pdf