00000cam 2200000zi 4500 9.958022 CaOODSP 20251205143212 m o d f cr mn||||||||| 251205t19931993bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x8x9 Fs97-4/2184E-PDF Fs97-4/2184E Yamanaka, Kae Lynne, 1958- author. 1992 research catch and effort data on nearshore reef-fishes in British Columbia Statistical Area 12 / by K.L. Yamanaka and L.J. Richards. Nanaimo, British Columbia : Biological Sciences Branch, Department of Fisheries and Oceans, Pacific Biological Station, 1993. ©1993 1 online resource (iv, 77 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 2184 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 6-7). "As part of a research program in support of stock assessments for nearshore reef-fishes, a hook and line survey was conducted in statistical area 12 (Johnstone Strait) in June 1992. The results are presented in this report, and the 1992 data are compared with data from similar surveys conducted in 1986, 1987 and 1988. Research CPUE data were collected by angling with trolling rods and reels, using frozen herring as bait. Three depth intervals (5-40 m, 41-70 m, and 71-100 m) were fished at most sites. Quillback and total rockfish CPUE were higher at most depth/site locations in the 1992 survey than in the 1986-88 surveys. Quillback rockfish, kelp greenling, yellowtail rockfish and copper rockfish were the dominant species in the catch. Quillback rockfish length increased with depth. Median lengths of quillback and copper rockfish, kelp greenling and lingcod decreased between the 1986-88 surveys and the 1992 survey. Median age of quillback rockfish also decreased between the 1986-88 surveys and the 1992 survey, in part due to the recruitment of a strong 1985 year-class (age 7). This strong year-class accounts for the increase in CPUE between the 1986-88 and 1992 surveys"--Abstract, page iii. Includes abstracts in English and French. Reef fishes British Columbia Johnstone Strait. Fisheries Catch effort British Columbia Johnstone Strait. Fish surveys British Columbia Johnstone Strait. Poissons des récifs Colombie-Britannique Johnstone, Détroit de. Pêches Mortalité par pêche Colombie-Britannique Johnstone, Détroit de. Inventaires ichtyologiques Colombie-Britannique Johnstone, Détroit de. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 2184. (CaOODSP)9.505211 PDF 769 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-2184-eng.pdf