Southern bluefin tuna parameters
| . | Trial . | . | . | . | . | . | . | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| . | 1 . | 2 . | . | 3 . | . | 4 . | Mean (N=4 or 6) . | |||||
| Mb (kg) | 9.4±1.6 | 9.9±0.9 | 11±1.3 | 11±1.4 | 10±0.4 | |||||||
| BL (cm) | 81±5 | 83±2 | 88±3 | 86±2 | 84±1.6 | |||||||
| T (°C) | 19.7–20.1 | 20.1–20.3 | 19.1–19.7 | 18.2–18.5 | 19.3±0.4 | |||||||
| Ur (BL s-1) | 0.71 | 1.4 | 0.78 | 0.83 | 0.92±0.15 | |||||||
| RMR (mg kg-1 h-1) | 300 | 456 | 355 | 354 | 366±32.5 | |||||||
| Feed trials | 1 | 1 | 2 | 1 | 2 | 1 | ||||||
| Ration (%Mb) | 5.7 | 6.0 | 8.5 | 2.1 | 6.8 | 4.1 | 5.5±0.9 | |||||
| IE (mJ) | 8.96 | 10.0 | 14.1 | 3.70 | 12.1 | 7.73 | 9.48±1.48 | |||||
| Usda (BL s-1) | 0.87 | 2.0 | 2.6 | 0.80 | 1.7 | 1.4 | 1.6±0.9 | |||||
| Usda duration (h) | 26 | 38 | 45+ | 20 | 45+ | 24+ | 33±4.5 | |||||
| Peak (mg kg-1 h-1) | 728 | 1240 | 1290 | 469 | 840 | 669 | 872±133 | |||||
| Factorial scope | 2.4 | 2.7 | 2.8 | 1.3 | 2.3 | 1.9 | 2.2±0.23 | |||||
| Duration (h) | 24 | 23 | 42 | 27 | 45+ | 25 | 31±4.0 | |||||
| Magnitude (kJ kg-1) | 99.2 | 130 | 192 | 30.7 | 148 | 74.9 | 112±23.2 | |||||
| Coefficient (%) | 31 | 38 | 40 | 26 | 39 | 33 | 35±2.2 | |||||
| . | Trial . | . | . | . | . | . | . | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| . | 1 . | 2 . | . | 3 . | . | 4 . | Mean (N=4 or 6) . | |||||
| Mb (kg) | 9.4±1.6 | 9.9±0.9 | 11±1.3 | 11±1.4 | 10±0.4 | |||||||
| BL (cm) | 81±5 | 83±2 | 88±3 | 86±2 | 84±1.6 | |||||||
| T (°C) | 19.7–20.1 | 20.1–20.3 | 19.1–19.7 | 18.2–18.5 | 19.3±0.4 | |||||||
| Ur (BL s-1) | 0.71 | 1.4 | 0.78 | 0.83 | 0.92±0.15 | |||||||
| RMR (mg kg-1 h-1) | 300 | 456 | 355 | 354 | 366±32.5 | |||||||
| Feed trials | 1 | 1 | 2 | 1 | 2 | 1 | ||||||
| Ration (%Mb) | 5.7 | 6.0 | 8.5 | 2.1 | 6.8 | 4.1 | 5.5±0.9 | |||||
| IE (mJ) | 8.96 | 10.0 | 14.1 | 3.70 | 12.1 | 7.73 | 9.48±1.48 | |||||
| Usda (BL s-1) | 0.87 | 2.0 | 2.6 | 0.80 | 1.7 | 1.4 | 1.6±0.9 | |||||
| Usda duration (h) | 26 | 38 | 45+ | 20 | 45+ | 24+ | 33±4.5 | |||||
| Peak (mg kg-1 h-1) | 728 | 1240 | 1290 | 469 | 840 | 669 | 872±133 | |||||
| Factorial scope | 2.4 | 2.7 | 2.8 | 1.3 | 2.3 | 1.9 | 2.2±0.23 | |||||
| Duration (h) | 24 | 23 | 42 | 27 | 45+ | 25 | 31±4.0 | |||||
| Magnitude (kJ kg-1) | 99.2 | 130 | 192 | 30.7 | 148 | 74.9 | 112±23.2 | |||||
| Coefficient (%) | 31 | 38 | 40 | 26 | 39 | 33 | 35±2.2 | |||||
Mb, body mass; BL, body length; T,water temperature; Ur, routine swimming velocity; RMR,calculated routine metabolic rate; IE, total ingested energy; Usda, mean swimming velocity during the SDA period; Usda duration, duration of elevated post-prandial swimming velocity
Values are means ± s.e.m. for the three fish used in each trial