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) |