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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc
045 |ax9x9
0861 |aFs97-4/2502E-PDF|zFs97-4/2502E
1001 |aNagtegaal, D. A. |q(Dick A.)|eauthor.
24510|aResults of rotary auger trap sampling in the Nanaimo River, 1999 / |cby D.A. Nagtegaal and E.W. Carter.
264 1|aNanaimo, British Columbia : |bFisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station, |c2000.
264 4|c©2000
300 |a1 online resource (vi, 24 pages) : |billustrations, map.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian manuscript report of fisheries and aquatic sciences, |y0706-6473 ; |v2500
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 8-10).
5203 |a"In 1999, a study of juvenile chinook salmon (Oncorhynchus tshawytscha) productivity was conducted by Fisheries and Oceans Canada, Pacific Biological Station together with the Nanaimo First Nations. The three key elements of this yearly project are: i) enumeration of juvenile out-migrants, ii) monitoring growth of hatchery and naturally-reared fry, iii) monitoring hatchery releases and interaction between hatchery and naturally-reared fry in the river. A rotary screw trap was used to estimate fry production. Bismarck Brown dyed naturally-reared fry were released above the trap site and recapture results of these marked fry were used to expand trap catches to estimate total production. The minimum estimate of production of naturally-reared juvenile chinook for the 1998 brood year was 25,424 (95%CL: 22,822 - 27,966). Minimal recapture data were obtained from hatchery fry. A total of 1,691 hatchery fry were recovered from three hatchery fry releases which occurred (May 9, 12 and 13) while the project was active. It was assumed that these hatchery fry emigrated out of the river shortly after release and those that remained in the river for a period of time did not migrate down to the trap site prior to the end of the project. The other hatchery release (May 28) occurred after the project completion. It is believed therefore that hatchery and naturally-reared fly interaction is minimal. Based on hatchery records, releases of chinook fry and smolts in 1999 totalled 608,425"--Abstract, page v.
546 |aIncludes abstracts in English and French.
650 0|aChinook salmon|xInfancy|zBritish Columbia|zNanaimo River.
650 0|aChinook salmon|xProductivity|zBritish Columbia|zNanaimo River.
650 0|aHatchery fishes|zBritish Columbia|zNanaimo River.
650 6|aSaumoneau quinnat|zColombie-Britannique|zNanaimo, Rivière.
650 6|aSaumon quinnat|xProductivité|zColombie-Britannique|zNanaimo, Rivière.
650 6|aPoissons d'élevage|zColombie-Britannique|zNanaimo, Rivière.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
7102 |aPacific Biological Station (1972- ), |eissuing body.
830#0|aCanadian manuscript report of fisheries and aquatic sciences ;|v2500.|w(CaOODSP)9.505211
85640|qPDF|s856 KB|uhttps://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-2502-eng.pdf