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Table 5 Estimates of YPR, SPR, and reference points under different harvesting strategies for male O. stewartii stock

From: Stock assessment and management implications of an endemic fish, Oxygymnocypris stewartii, in the Yarlung Zangbo River in Tibet, China

Management policy M (year−1) F max (year−1) F 25% (year−1) F 40% (year−1) YPRcurrent (g) YPRmax (g) YPR25% (g) YPR40% (g) SPRcurrent (%)
Current policy 0.12 0.22 0.22 0.13 185.50 208.42 208.42 195.64 9.17
0.21 0.43 0.31 0.18 107.44 107.46 106.07 96.16 17.92
0.29 0.82 0.45 0.23 63.84 67.94 65.92 57.15 28.78
Policy 1 0.12 0.11 0.13 0.08 44.95 134.78 132.59 130.90 1.15
0.21 0.14 0.15 0.09 37.31 63.80 63.61 60.06 3.19
0.29 0.17 0.17 0.11 30.53 37.78 37.78 35.50 7.03
Policy 2 0.12 0.15 0.16 0.10 110.23 168.97 168.58 161.56 3.31
0.21 0.22 0.20 0.12 76.44 85.11 84.91 77.55 7.69
0.29 0.32 0.24 0.14 53.29 53.48 52.61 46.15 14.43
Policy 3 0.12 0.36 0.39 0.20 239.59 242.55 242.41 230.99 20.28
0.21 1.24 0.86 0.32 115.91 121.65 121.18 110.15 34.21
0.29 3.36 0.58 58.68 74.03 72.77 65.25 48.42
Policy 4 0.12 0.09 0.13 0.08 16.82 112.58 106.44 111.67 4.18
0.21 0.11 0.16 0.10 13.96 45.42 42.06 45.34 8.63
0.29 0.12 0.21 0.12 11.42 22.41 19.17 22.41 14.92
Policy 5 0.12 0.12 0.16 0.10 44.09 137.97 132.60 136.60 5.61
0.21 0.14 0.21 0.13 30.58 57.47 53.85 57.30 11.62
0.29 0.16 0.28 0.16 21.32 28.95 25.29 28.95 19.84
Policy 6 0.12 0.18 0.22 0.13 127.27 183.02 180.24 178.21 9.76
0.21 0.24 0.32 0.18 73.72 82.36 80.35 80.48 18.83
0.29 0.30 0.46 0.24 43.80 44.32 41.67 43.76 29.95
Policy 7 0.12 0.36 0.39 0.20 239.59 242.55 242.41 230.99 20.28
0.21 1.24 0.87 0.32 115.91 121.65 121.22 110.15 34.21
0.29 3.36 0.58 58.68 74.03 72.77 65.25 48.42
Policy 8 0.12 0.10 0.16 39.45 91.88 85.69 29.36
0.21 0.16 0.33 32.75 45.03 38.52 37.85
0.29 0.22 0.61 26.79 29.40 19.38 43.74
Policy 9 0.12 0.15 0.20 94.35 113.46 111.48 30.98
0.21 0.40 0.51 65.42 65.51 64.87 41.22
0.29 0.52 1.13 45.61 46.98 41.90 49.28
Policy 10 0.12 1.06 0.29 139.67 149.43 131.09 35.28
0.21 1.27 1.87 80.90 96.46 95.05 48.72
0.29 1.57 48.06 66.16 59.82
Policy 11 0.12 5.46 1.11 107.30 208.46 145.79 41.86
0.21 51.91 119.64 58.44
0.29 26.28 74.03 71.60
  1. –: no data