Table 1
The number of individuals, size ranges, and mean length with standard deviation (mean ± SD) of the Pacific bluefin tuna (Thunnus orientalis) collected from 2004 to 2013

Month

January

February

March

April

May

June

July

August

September

October

November

December

Total

Size ranges (mean ± SD)

Year

2004

87

12

72

126

217

72

11

597

40.6~115.7 cm (58.15 ± 15.05 cm)

2005

73

97

47

40

42

294

113

73

779

40.0~78.5 cm (51.18 ± 6.35 cm)

2006

1054

520

833

586

149

225

320

419

117

4223

31.0~82.4 cm (55.9 ± 11.11 cm)

2007

1383

1222

371

1

15

281

306

144

96

123

417

4359

23.1~146.9 cm (52.63 ± 10.04 cm)

2008

2409

1406

1425

713

800

728

1474

172

24

127

81

855

10,214

32.0~187.0 cm (58.08 ± 25.67 cm)

2009

1191

1028

2432

800

393

80

894

416

89

63

37

7468

30.0~171.0 cm (57.76 ± 20.35 cm)

2010

130

82

1413

344

302

46

107

188

51

2663

38.0~178.0 cm (73.84 ± 27.54 cm)

2011

113

210

598

375

95

288

119

112

89

36

466

91

2592

30.0~182.0 cm (46.89 ± 7.01 cm)

2012

824

1043

150

855

330

598

23

5

1

57

3886

34.0~168.0 cm (54.32 ± 15.01 cm)

2013

419

21

362

289

29

389

10

33

27

21

14

1614

19.0~193.0 cm (57.81± 18.75 cm)

Total

7596

5716

7643

3220

2069

3195

3319

1904

670

708

632

1723

38,395

Size ranges (mean ± SD)

19.0~82.1 cm (49.31 ± 8.25 cm)

31.0~158.0 cm (50.00 ± 29.58 cm)

31.7~171.0 cm (64.79 ± 29.58 cm)

35.0~193.0 cm (66.66 ± 30.43 cm)

34.0~168.0 cm (59.19 ± 22.80 cm)

39.0~169.0 cm (59.20 ± 16.18 cm)

23.1~115.7 cm (53.56 ± 8.31 cm)

30.0~187.0 cm (58.20 ± 8.33 cm)

30.0~68.0 cm (43.07 ± 8.26 cm)

36.0~72.1 cm (48.68 ± 9.04 cm)

40.0~125.0 cm (50.62 ± 8.33 cm)

38.0~81.0 cm (62.44 ± 12.78 cm)