00000nam 2200000zi 4500 9.878845 CaOODSP 20221107165344 m o d f cr bn||||||||| 190904s1978 nsca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-nf x6x7 Fs70-8/78-6E-PDF Bowering, W. R. (William Raymond), 1950- author. Trends in the witch fishery on St. Pierre Bank / by W.R. Bowering. [Dartmouth, N.S.] : [Canadian Atlantic Fisheries Scientific Advisory Committee], [1978] 1 online resource (10 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC res. doc. ; 78/6 "Not to be cited without author's permission." Digitized edtion from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 3). "Landings from this fishery have fluctuated from 500 tons in 1965 to almost 5,000 tons in1967. The landings from 1967 were on a steady decline (with the exception of 1973) until 1977 when the catch increased to 4,200 tons. This fishery, as with most witch fisheries in the Northwest Atlantic, is primarily a by-catch of other main fisheries such as redfish, American plaice and cod. Because of this and the fact that this species has a varied distribution pattern seasonally, any effort and catch per unit effort data have little real value in determining estimates of fishing mortality for this stock. Since the data are still insufficient to perform a virtual population type of analysis, this document is essentially a review of a previous yield-per-recruit assessment presented at last year's meeting with the addition of 1977 data"--Introduction. Issued also in print format. gccst Salt water fish gccst Fisheries Canada. Fisheries and Environment Canada. Canadian Atlantic Fisheries Scientific Advisory Committee. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 78/6. (CaOODSP)9.869616 PDF 548 KB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-78-6-eng.pdf