(Leptonychotes weddellii)
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WEDDELL SEAL (Leptonychotes weddellii) |
| BODY MASS: 400-600 Kg | DEEPEST DIVE: 741 m (REF 1) |
| BODY SIZE: 250-290 cm | LONGEST DIVE: 4020 s (REF 9) |
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| McMURDO SOUND (77°51'S - 166°46'E) |  |
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1990-91: Dive depth: max= 741 m (N=16 females) 1990-91: Dive duration: max= 2550 s (N=16 females) 1990-91: (Satellite-linked time-depth recorders SLTDRs, SMRU, Res. 3m, samping= 10s) |
REF 1 |
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2000: Dive depth: gd-avg= 250.4 ± 23.9 m, max= 405.8 m (N=8 seals) 2000: Dive duration: gd-avg= 956.3 ± 147.7 s, max= 1764 s (N=8 seals) 2000: (UWE1000-PD2GT, Little Leonardo, 22x124mm, sampling= 1s, res. 0.24m) |
REF 2 |
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2000: Dive depth: gd-avg= 231.9 ± 94.4m (N=4 females at "Big Razorback") 2000: Dive depth: gd-avg= 295.2 ± 76.3m (N=4 females at "Turks Head") 2000: (Video-TDR, DSL-1000DV, Little Leonardo, 2 cylinders of 230x52mm each, 3400g) 2000: (Acc. ± 5 m, sampling= 1 s) |
REF 3 |
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1987?: Dive duration: max= 1980 s (N=4 seals) 1987?: (Observation of surfacing on an isolated ice hole) |
REF 4 |
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1963-65: Dive depth: max= 600 m (N=31 adults and subadults) 1963-65: Dive duration: max= 2600 s (N=31 adults and subadults) 1963-65: (Tsurumi-Seikikosaku maximum depth recorder + ultrasonic depth transmitter) 1963-65: (manometer tube for maximum depth + smoked glass disc time depth recorder) |
REF 5 |
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1992-94: Dive depth: avg= 105.8 ± 8.2 m (N=19 weaned pups) 1992-94: Dive duration: avg= 5.67 ± 0.02min, max=780s (N=19 weaned pups) 1992-94: (SLTDR 05W or SDR-T6, Wildlife Computers, Res. 3m, sampling= 10s) 1992-94: Dive depth: avg= 118.5 ± 17.6 m (N=15 yearlings) 1992-94: Dive duration: avg= 7.27 ± 0.07 min, max=960 s (N=15 yearlings) 1992-94: (TDR, Wildlife Computers, Res. 3m, sampling= 10s) 1990-91: Dive depth: avg= 163.1 ± 13.4 m (N=8 females) 1990-91: Dive duration: avg= 12.73 ± 0.03 min, max=2280 s (N=8 females) 1990-91: (SLTDR 05W, Wildlife Computers, Res. 3m, sampling= 60s) |
REF 6 |
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1998-99: Dive depth: avg= 261.8 ± 68.4m, max= 386 m (N= 5 females) 1998-99: Dive duration: avg= 26.14 ± 10.92min, max= 3744 s (N=5 females) 1998-99: 58 dives with 10 or more fixes were non-randomly selected from the 5 females 1998-99: (Vemco depth-modulated acoustic transmitter, 60-76.8kHz, 16×115mm, 33g) |
REF 7 |
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1968+69: Day dive depth: avg-max= 506.3 ± 199.3m, max= 600m (N=4 seals) 1968+69: Twilight dive depth: avg-max= 200 ± 144.2m, max= 360m (N=3 seals) 1968+69: Night dive depth: avg-max= 97 ± 82 m, max= 230 m (N= 5 seals) 1968+69: (Oceanographic maximum depth recorder, 390g, 55x115mm, Res. 10m) |
REF 8 |
| DRESCHER INLET (72°52'S - 19°26'W) | |
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1998: Dive depth: mode at 400 m, max= 450 m (N=8 seals) 1998: Dive duration: max= 4020 s (N=8 seals) 1998: (TDR, Driesen+Kern, 120x180 mm, sampling= 8s, res. ca. 3.1m) |
REF 9 |
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2003: Under ice shelf dive depth: avg-max= 152.9 ± 23.6m (N=12 dives) 2003: Demersal dive depth: avg-max= 413.4 ± 13.4m (N=19 dives) 2003: Pelagial dive depth: avg-max= 117 ± 47.4m (N=35 dives) 2003: (Video-TDR, DSL-1000DV, Little Leonardo, 2 cylinders of 230x52mm each, 3400g) 2003: (Acc. ± 5 m, sampling= 1 s, all dives performed by 4 females) |
REF 10 |
| REFERENCES |
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