Table 3 Data obtained from the tagged Atlantic salmon (AS) consumed by endothermic fish and data from the endothermic fish predators used in the linear discriminant analysis (ABFT = Atlantic bluefin tuna, PB = porbeagle).

From: Ocean predation and mortality of adult Atlantic salmon

  Tag ID Group Duration (d) Resolution (Δ t) Date % surf Diel amplitude (m) 95% (m) Max depth (m) TMax (°C) TE (°C) TD (°C) Most likely predator
AS 117454 Canada 47 15 min 17/6/12 66 43 32 135 26.9 17.9 9.9 ABFT
AS 117458 Canada 36 15 min 20/6/12 92 35 25 97 25.1 16.3 6.5 ABFT
AS 117463 Canada 25 15 min 8/6/12 99 6 14 22 21.9 11.5 7.4 ABFT
AS 128019 Canada 24 2 min 5/6/13 89 15 29 73 26.7 17.2 10.7 ABFT
AS 128023 Canada 35 15 min 30/6/13 71 161 123 215 26.9 13.7 5.5 PB
AS 136019 Canada 37 15 min 2/7/14 69 86 156 183 26.2 14.5 6.3 PB
AS 158494 Canada 26 15 min 25/6/16 35 116 48 188 26.5 17.4 9.7 PB
AS 148256* Canada 80 15 min 1/8/15 96 355 24.1 16.3 8.3
AS 34867* Ireland 159 30 min 23/8/11 100 11 29.1 18.6 8.8
AS 127792* Spain 19 15 min 1/4/13 59 737 27.8 16.9 9.2
AS 127793* Spain 25 15 min 7/4/13 85 260 25.0 13.4 9.9
AS 128004* Spain 8 15 min 21/3/13 98 204 23.6 11.8 4.8
AS 136038* Spain 8 15 min 25/3/14 49 565 26.9 14.6 9.4
ABFT 100864   18 30 s 11/9//10 87 0 25
ABFT 100905   34 30 s 1/9/10 98 6 16
ABFT 100906   25 30 s 1/9/10 94 −1 21
ABT 100913   14 30 s 12/9/10 70 2 28
PB 07A0946   96 10 s 16/7/08 45 40 196
PB 07A0946   13 10 s 19/10/08 19 −12 118
PB 08A0999   44 10 s 14/8/10 17 41 38
PB 08A0999   29 10 s 26/9/10 15 0 87
  1. Atlantic salmon denoted with an asterisk (*) were not included in the linear discriminant analysis. Duration indicates the time from release till predation for the Atlantic salmon (AS) and the length of the time series for the predators (ABFT and PB). Resolution indicates the temporal resolution of the tag data. Date indicates the time of predation for the Atlantic salmon (AS) and start of time series for the predators (ABFT and PB). %Surf is the proportion of time spent near the surface (<20 m), diel amplitude is the difference in maximum depth between day and night, and 95% is the 95th percentile of all recorded depths. TMax is the maximum stomach temperature of the predator, TE is the thermal excess, and TD is the maximum difference in stomach temperature.