Bocaccio (Sebastes paucispinis) COSEWIC assessment and status report: chapter 16

Appendices


Appendix 1: Authorities consulted

(Unless otherwise noted, all interviews were conducted in September-October 2001).

Amos, A. Hook-and-line fisher and Member of Hesquiaht First Nation and member of Nuh-Chah-Nulth Economic Development Council. Nuu-chah-nulth Tribal Council. PO Box 1383. Port Alberni, BC V9Y 7M2. 250-724-3131.

Beamish, R.J. Scientist with Fisheries and Oceans, Canada. Specialist in Strait of Georgia ecosystem. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7029.

Best, R.A. Former commercial troller. 1810 Argyle St., Nanaimo, B.C. V9S 3K7. 250-729-3990.

Best, R.N. Former commercial troller. 247 Villa Rd., Nanaimo, B.C. V9T 2P6. 250-751-2332.

Brown, T.J. Biologist with Fisheries and Oceans, Canada and recreational fisher. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7091.

Bryce, I. Commercial troller. 1985 Stewart Rd., Nanoose Bay, B.C. V9P 9E7. 250-468-5241.

Crabbe, F. Treaty Implementation Negotiator, Fisheries and Oceans, Canada and former commercial salmon troll fisher. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7267

Dickens, B. Trawl fisher. 1678 Admiral Tryon Blvd. Qualicum Beach, B.C. V0R 2T0. 250-752-1418.

Gillespie, G. Stock assessment biologist with shellfish and groundfish sections, Fisheries and Oceans, Canada. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7215.

Gorman, R. Trawl fisher. 6648 Hersham Ave, Burnaby. B.C. V5E 3K8. 604-525-1937.

Hein, K. Stock assessment with creel program, Fisheries and Oceans, Canada. Pacific Biological Station, Nanaimo, B.C. Canada. V9T 6N7. 250-756-7028.

MacCall, A. Groundfish Scientist. Southwest Fisheries Science Center, Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. Santa Cruz Laboratory, 110 Shaffer Road, Santa Cruz, CA 95060. 831-420-3900.

McDermid, T. Commercial trawl fisher, specialist in commercial fishing in Area 4B. 250-656-5565.

North, R. Sport fisher in Howe Sound and Strait of Georgia. 604-228-9919.

Palsson, W.A. Biologist. Senior Fish and Wildlife Biologist. Puget Sound Groundfish. Washington Department of Fish and Wildlife. 16018 Mill Creek Blvd. Mill Creek, WA 98012-1296. 425-379-2313.

Saunders, M.W. Biologist. Fisheries and Oceans, Canada. Pacific Biological Station, Nanaimo. B.C. V9T 6N7. 250-756-7154.

Whitaker, D. Parasitologist. Fisheries and Oceans, Canada. Pacific Biological Station. Nanaimo. B.C. V9T 6N7. 250-756-7025.

Wilkins, M.E. Biologist. Alaska Fisheries Science Center, Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. 7600 Sand Point Way N.E., Bin C15700, Building 4. Seattle, Washington 98115-0070. 206-526-4104.

 


Appendix 2: Collections examined

No collections were examined.

 


Appendix 3: Biomass estimation from the 3c and 3d shrimp survey

This section summarizes the survey and estimation procedures for bocaccio using data collected from the shrimp trawl surveys conducted off the West Coast of Vancouver Island (WCVI) since 1973 for Minor Areas 124, and 125 (Fig. 4). The systematic survey was established using grid patterns based on LORAN lines. Inner and outer boundaries were determined by fishing this grid system until shrimp catches were negligible or the bottom became too rough to trawl.

Over the history of the survey, there has been an evolution in the methodology. While sampling effort has been calibrated with respect to catchability of shrimp, there are no means to standardize catchability with respect to finfish. All tows were of 30 minutes duration, unless shortened due to gear malfunction. The distance traveled was calculated using the technology of the day. In the early years, this was start and stop LORAN locations while more recent surveys have used DGPS. This has resulted in a trend towards a shorter distance traveled for a 30-minute tow over the years. The estimation did not attempt to account for the errors or differences among surveys with respect to distance towed. There was also a modest variation in timing of the survey. Surveys were generally completed in the spring although an additional survey was conducted 1977 and 1978.

The density of bocaccio in kg/m2 was calculated for all tows. These data, with the location of the center point of each tow, was imported into a GIS. The total area of fishable shrimp grounds for each survey area was then “masked” into a grid of 300 x 300-m cells. The catch density was then assigned to the appropriate grid cell using the center point location. The biomass indices were calculated by interpolating values for the blank grid cells and then summing the values in each grid within the larger masked area. Interpolation was conducted using with an inverse distance weighting procedure and a radial search routine. The size of the radius was chosen as the lower boundary of the third category determined within the “Find Distance” routine in the spatial analyst menu. The biomass calculations were made within the GIS software package (ArcView).

 


Appendix 4: Recorded landings and discards (t) by fishery and major area (offshore hake refers to catches in the joint venture and foreign nation supplemental fisheries)

Appendix 4: Recorded landings and discards (t) by fishery and major areas (4B and 3C) (nation and gear)
 Year 4B 3C
Canada Canada  Total Canada Canada USA Offshore hake  Total
Trawl landed Trawl discarded Trawl landed Trawl discarded Trawl USA Trawl catch
1966     0         0
1967     0         0
1968     0     0.08   0.08
1969     0     2.27   2.27
1970     0     78.69   78.69
1971     0     12.11   12.11
1972     0     9.26   9.26
1973     0     24.18   24.18
1974     0 0.37   8.16   8.53
1975     0 0.54   16.66   17.20
1976     0 2.59   45.58   48.17
1977     0 28.97   0.46   29.43
1978 0.06   0.06 3.81 3.06 1.49   8.36
1979 0.29   0.29 1.42 13.58 2.02   17.02
1980 0.05 0.02 0.07 3.03       3.03
1981 0.08   0.08 3.56       3.56
1982     0 1.56       1.56
1983 1.52   1.52 9.30       9.30
1984     0 14.90       14.90
1985     0 33.60 1.86     35.46
1986 0.43   0.43 81.48       81.48
1987     0 33.19       33.19
1988     0 288.95     4.34 293.29
1989 0.01   0.01 101.23     2.38 103.61
1990     0 81.08     2.31 83.39
1991 0.11   0.11 75.80 0.91   1.92 78.63
1992 0.25   0.25 148.92 0.90   2.46 152.28
1993 0.72 0.03 0.75 130.95     3.04 133.99
1994 0.29   0.29 97.07     6.57 103.64
1995 0.20   0.20 55.82 0.01   1.60 57.43
1996 0.08   0.08 39.80 0.07   2.93 42.80
1997 0.01   0.01 18.56 1.32   1.26 21.14
1998     0 30.06 0.58   1.41 32.05
1999     0 28.97 0.25   1.62 30.84
2000     0 24.11 0.35   0.22 24.68

 

Appendix 4: Continued (3D and 5A) (nation and gear)
 Year 3D 5A
Canada Canada USA Canada Offshore hake  Total Canada Canada USA Offshore hake  Total
Trawl landed Trawl discarded Trawl landed Troll landed Trawl catch Trawl landed Trawl discarded Trawl USA Trawl catch
1966           0         0
1967     51.96     51.96 0.22   88.91   89.13
1968 1.43   32.73     34.16 2.03 3.63 13.37   19.03
1969 1.03   86.22     87.25 1.11   246.68   247.79
1970 3.04   126.39     129.43 0.39   54.88   55.27
1971     19.89     19.89     36.45   36.45
1972     63.00     63.00     11.21   11.21
1973     74.07     74.07     170.47   170.47
1974 3.01   27.01     30.02 1.48   203.58   205.06
1975     20.07     20.07 3.41   249.98   253.39
1976 6.24   155.74     161.98 8.24   178.74   186.98
1977 10.14   10.74     20.88 17.41   30.28   47.69
1978 19.15   0.52     19.67 74.88 1.16 13.26   89.30
1979 31.78   35.27     67.05 42.60 1.74 42.16   86.50
1980 11.63         11.63 27.03       27.03
1981 7.47         7.47 13.94       13.94
1982 9.78         9.78 24.38 2.42     26.80
1983 30.84 5.90       36.74 28.76       28.76
1984 50.08         50.08 42.52       42.52
1985 128.08 0.10       128.18 85.25       85.25
1986 22.90         22.90 157.00       157.00
1987 172.73         172.73 166.45 4.76     171.21
1988 300.58       0.60 301.18 233.82       233.82
1989 228.98 0.45     2.70 232.13 162.26 0.23     162.49
1990 185.79       0.40 186.19 256.40 0.54     256.94
1991 241.93 0.45     0.48 242.86 304.24       304.24
1992 208.91       0.02 208.93 258.46       258.46
1993 322.57       1.28 323.85 250.06       250.06
1994 172.88 0.02     4.09 176.99 117.72 1.06     118.78
1995 112.75 0.09       112.84 146.67 0.50     147.17
1996 57.88 0.31       58.19 51.34 0.27     51.61
1997 41.83 0.66       42.49 72.10 0.21     72.31
1998 57.75 0.13       57.88 74.00 0.09     74.09
1999 66.59 0.20       66.79 53.47 0.27     53.74
2000 64.54 1.48   0.01   66.03 45.58 0.01   2.63 48.22

 

Appendix 4: Continued (5B and 5C) (nation and gear)
 Year 5B 5C
Canada Canada USA Offshore hake  Total Canada Canada  Total
Trawl landed Trawl discarded Trawl USA Trawl catch Trawl landed Trawl discarded
1966         0     0
1967     19.84   19.84     0
1968     48.61   48.61     0
1969 3.22   474.06   477.28     0
1970     41.98   41.98     00
1971     103.63   103.63     0
1972     130.31   130.31     0
1973     475.20   475.20     0
1974     464.09   464.09     0
1975     211.51   211.51     0
1976 18.96   63.82   82.78 0.05   0.05
1977 24.50   192.48   216.98 0.23   0.23
1978 58.43 3.40     61.83 7.44 0.45 7.89
1979 108.06 9.78 61.74   179.58 67.65   67.65
1980 59.81 33.57     93.38 18.78 4.79 23.57
1981 35.85 9.07     44.92 3.31 0.12 3.43
1982 33.91 18.42     52.33 1.39 0.48 1.87
1983 64.55 0.45     65.00 4.59 0.02 4.61
1984 35.87       35.87 14.05 2.27 16.32
1985 74.54       74.54 70.87 4.54 75.41
1986 194.78       194.78 25.76 0.23 25.99
1987 246.38       246.38 57.77   57.77
1988 388.63 3.63     392.26 35.92   35.92
1989 175.09 1.41     176.50 43.29   43.29
1990 378.50       378.50 95.61   95.61
1991 367.84       367.84 45.75   45.75
1992 196.96       196.96 50.96   50.96
1993 239.49       239.49 49.27   49.27
1994 111.20 0.11     111.31 46.74   46.74
1995 92.91 0.17     93.08 63.93   63.93
1996 61.47 1.41     62.88 18.54 0.22 18.76
1997 53.91 0.05     53.96 11.58   11.58
1998 55.20 0.22     55.42 10.53 0.01 10.54
1999 46.10 0.11     46.21 11.54 0.02 11.56
2000 106.01 0.09   3.71 109.81 6.65 0.01 6.66

 

Appendix 4: Continued (5D and 5E) (nation and gear)
 Year 5D 5E
Canada Canada Offshore hake  Total Canada Canada Offshore hake Canada  Total
Trawl landed Trawl discarded Trawl catch Trawl landed Trawl discarded Trawl catch Troll landed
1966 4.51     4.51         0
1967       0         0
1968       0         0
1969       0         0
1970 0.63     0.63         0
1971       0         0
1972 9.02     9.02         0
1973 2.37     2.37         0
1974       0         0
1975 1.58 0.45   2.03         0
1976 14.84     14.84         0
1977 52.88 6.58   59.46 1.37       1.37
1978 46.19 1.63   47.82 14.31 0.08     14.39
1979 46.90 9.75   56.65 3.63 0.12     3.75
1980 18.28 0.02   18.30 0.45 0.01     0.46
1981 3.92 11.79   15.71 0.27 0.32     0.59
1982 7.69 0.10   7.79 0.52       0.52
1983 1.75 1.36   3.11 0.09       0.09
1984 9.56     9.56         0
1985 7.44     7.44 0.33       0.33
1986 10.84     10.84 7.25       7.25
1987 22.95     22.95 5.39       5.39
1988 18.29     18.29 48.15       48.15
1989 22.57     22.57 44.03       44.03
1990 19.00 11.34   30.34 1.48       1.48
1991 13.97 1.91   15.88 8.17       8.17
1992 72.53 0.45   72.98 11.81       11.81
1993 89.71     89.71 42.34       42.34
1994 41.19     41.19 8.77       8.77
1995 27.97     27.97 7.71       7.71
1996 17.33 0.16   17.49 8.49 0.03     8.52
1997 17.30 0.18   17.48 5.48 0.05     5.53
1998 15.62 0.05   15.67 5.61 0.13     5.74
1999 6.68 0.01   6.69 3.28 0.45     3.73
2000 6.70 0.02 0.18 6.90 5.43 0.02 0.49 0.37 6.31

 

Appendix 4: Continued (Unknown and Grand Total) (nation and gear)
 Year Unknown  Grand Total
Canada Canada  Total
Trawl landed H & L landed
1966     0 4.51
1967     0 160.93
1968     0 101.88
1969     0 814.59
1970     0 306.00
1971     0 172.08
1972     0 222.80
1973     0 746.29
1974     0 707.70
1975     0 504.20
1976     0 494.80
1977     0 376.04
1978     0 249.32
1979     0 478.49
1980     0 177.47
1981     0 89.70
1982     0 100.65
1983     0 149.13
1984     0 169.25
1985     0 406.61
1986     0 500.67
1987     0 709.62
1988     0 1322.91
1989     0 784.63
1990     0 1032.45
1991     0 1063.48
1992     0 952.63
1993     0 1129.46
1994     0 607.71
1995   29.24 29.24 539.57
1996 13.45 23.19 36.64 296.97
1997 3.61 11.20 14.81 239.31
1998 4.17 10.30 14.47 265.86
1999 4.21 13.34 17.55 237.11
2000 6.54 19.45 25.99 294.60

 


Appendix 5: Data sources used for the preparation of the Bocaccio status report

Catch and landings data

  1. GFCatch. Canadian trawl landings, 1954-1995 (Rutherford 1999).
  2. PacHarvTrawl. Canadian trawl landings, 1996-2000. SQL Server database, Groundfish Section, Stock Assessment Division, Science Branch, Fisheries and Oceans, Canada. Pacific Biological Station.
  3. PacHarvHL. Canadian hook and line landings, 1995-2001. SQL Server database, Groundfish Section, Stock Assessment Division, Science Branch, Fisheries and Oceans, Canada. Pacific Biological Station.
  4. Pacharv3. Canadian troll landings from sales slips, 1982-2001. Oracle database, Regional Data Unit, Information Management, Corporate Services Branch, Fisheries and Oceans, Canada.
  5. U.S.trawl landings from Canada and Washington, 1967-1979, from Tagart and Kimura (1982).
  6. U.S.trawl landings from Canada and Washington, 1980, unpublished data from Washington State Department of Fish and Wildlife (Jack Tagart, pers. comm. Appendix 1)
  7. PACFIN. U.S.commercial landings from Washington, Oregon and California, 1981-2000 (www.psmfc.org/pacfin/data.html).
  8. AKFIN. U.S. commercial landings from Alaska, 1991-1998 (www.psmfc.org/akfin/Reports/reports.html).
  9. Washington Department of Fish and Wildlife. Commercial trawl landings for 1980.

Biological data

  1. GFBio. Biological samples and research cruise database, Groundfish Section, Stock Assessment Division, Science Branch, Fisheries and Oceans, Canada. Pacific Biological Station.

 

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