000 02273nam  2200337zi 4500
0019.937768
003CaOODSP
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008240506t19881988bcca||||ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|bfre|beng
0861 |aFS97-4/1977E-PDF|zFS97-4/1977E
1001 |aNagtegaal, D. A., |eauthor.
24512|aA Pilot study to estimate total chinook mortality associated with seine fishing in Johnstone Strait during 1986 / |cby D.A. Nagtegaal, P.J. Starr, and B. Riddell.
264 1|aNanaimo, British Columbia : |bDepartment of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station, |cMarch 1988.
264 4|c©1988
300 |a1 online resource (iv, 55 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian manuscript report of fisheries and aquatic sciences, |vNo. 1977
504 |aIncludes bibliographical references.
520 |aIn 1986 a pilot study was conducted in the Johnstone Strait sockeye seine fishery to assess total chinook mortality. Catch statistics presently recorded are determined from records of chinook sales and are suspected to underestimate the catch of small (3 to 5 lbs.) and adult (over 5 lbs.) chinooks, and seriously underestimate the total mortality of all chinook. Data were collected for catch per seine set by species and size categories of chinook, the number of sets made by vessels per day, and the total number of vessels per day active in the fishery. Calculation of total catch involved extrapolating the estimated mean catch per set over all sets made and incorporated the Monte-Carlo bootstrap technique to determine the mean catch estimate and 95% confidence interval.
546 |aIncludes abstract in French and in English.
650 0|aFishing nets.
650 6|aFilets de pêche.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
830#0|aCanadian manuscript report of fisheries and aquatic sciences ;|vNo. 1977|w(CaOODSP)9.505211
85640|qPDF|s982 KB|uhttps://publications.gc.ca/collections/collection_2024/mpo-dfo/Fs97-4-1977-eng.pdf