Table 1 Summary statistics for eight narwhals instrumented with stomach temperature pills (STPs) in August 2012 and 2013
From: Stomach temperature of narwhals (Monodon monoceros) during feeding events
Year | Whale ID no. | Sex | Length | Estimated mass | Duration of STP record | Duration of contact with satellite transmitter | Temperature drop/threshold of STP | Time between release and first feeding event | Average temperature, non-feeding | Lowest temperature during feeding events | Average temperature during feeding events | Average duration of feeding events | Feeding events | Feeding rate | Range of depths at feeding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cm | kg | Hours | Days | °C | Minutes | °C (n) | °C | °C | Minutes | n | Events/24 h | m | |||
2012 | 22849 | M | 335 | 700 | 15 | 42 | 10/33 | 133 | 34.5 (490) | 25.0 | 31.6 | 3.3 | 5 | 8.0 | 40–216 |
22850 | M | 400 | 1,028 | 414 | 45 | 5/33 | 829 | 36.2 (11,700) | 24.0 | 30.2 | 10.7 | 45 | 2.6 | 23–553 | |
22853 | M | 278 | 467 | 10 | 45 | 10/33 | 171 | 35.4 (375) | 16.5 | 31.2 | 7.5 | 2 | 4.8 | 38–166 | |
24638 | F | 400 | 867 | 13 | 36 | 5/33 | 321 | 35.4 (410) | 23.4 | 29.6 | 6.2 | 8 | 14.8 | 3–252 | |
2013 | 3963 | M | 400 | 1,028 | 24 | 80 | 0.6/34 | 37 | 35.2 (1,117) | 10.5 | 29.5 | 9.5 | 13 | 13.0 | 0–240 |
3964 | M | 356 | 799 | 30 | 84 | 0.6/33 | 161 | 35.5 (1,285) | 29.0 | 33.3 | 13.7 | 18 | 14.4 | 13–383 | |
3965 | F | 420 | 959 | 191 | 83 | 0.6/34 | 362 | 35.8 (8,169) | 25.8 | 33.8 | 14.5 | 94 | 11.8 | 5–832 | |
6335 | M | 390 | 974 | 47 | 62 | 0.6/34 | 21 | 35.7 (1,708) | 29.4 | 33.3 | 11.2 | 19 | 9.7 | 16–610 |