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Table 1 Shark summary data

From: A dawn peak in the occurrence of ‘knifing behaviour’ in blue sharks

Shark ID A B C D E Mean values (±SD)
Length of shark (fork length and total length in cm) 150, 180 118, 140 167, 205 134, 163 138, 167
Sex of shark F SJ M M F
Date tagged 17/9/10 7/9/12 19/9/12 25/9/13 25/9/13
Number of days tracked 120 70 212 314 74 200.0 (±120.4)
Number of days knifing events were recorded 162 191 40 131.0 (±80.1)
% of days knifing events were recorded 76.4 60.8 54.1 63.8 (±11.4)
Number of knifing events recorded 807 921 170 632.7 (±404.7)
Daily rate of knifing events (excl. of days when no knifing events were recorded) 5.0 4.8 4.3 4.7 (±0.4)
Maximum number of knifing events recorded (per day) 26 13 11 16.7 (±8.1)
Longest duration (days) no knifing events were detected 9 27 9 15.0 (±10.4)
  1. PSATs were attached to sharks A and B, and SPOTS were attached to sharks C–E
  2. F female, M male, SJ small juvenile