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Table 2 Summary of confirmed foraging dives (N = 17) resulting in fish kills by 7 tagged northern resident killer whales over 4 years (2009–2012) of Dtag deployments

From: Fine-scale foraging movements by fish-eating killer whales (Orcinus orca) relate to the vertical distributions and escape responses of salmonid prey (Oncorhynchus spp.)

Tag ID Whale ID Sex Age (y) Date of kill (dd/mm/yyyy) Capture time (hh:mm:ss) Capture deptha (m) Fish species Fish ageb (European) Fish age (y)
oo09_234a A46 M 27 22/08/2009 18:46:35 101.6 Chinook 1.1 3
oo09_240a A37 M 32 28/08/2009 13:02:28 165.7 coho x.1 ≥2
oo09_240a A37 M 32 28/08/2009 13:29:29 119.4 coho 1.1 3
oo10_256a G64 F 10 13/09/2010 16:26:52 134.5 chum 0.4 5
oo10_256a G64 F 10 13/09/2010 16:44:18 123.7 * chum 0.4 5
oo10_265a G49 F 20 22/09/2010 17:46:02 130.5 chum 0.4 5
oo10_265a G49 F 20 22/09/2010 17:53:26 133.7 chum 0.3 4
oo11_246a G31 F 30 03/09/2011 13:24:46 201.9 Chinook 0.3 4
oo11_246a G31 F 30 03/09/2011 13:39:04 264.8 Chinook 0.3 4
oo11_246a G31 F 30 03/09/2011 14:43:15 131.1 Chinook 0.3 4
oo11_246a G31 F 30 03/09/2011 14:50:32 204.5 Chinook 0.3 4
oo11_246a G31 F 30 03/09/2011 15:05:47 180.7 Chinook 0.3 4
oo12_232a I106 ? 8 19/08/2012 15:43:54 0.7 † chum 0.3 4
oo12_232a I106 ? 8 19/08/2012 16:51:35 87.6 chum 0.2 3
oo12_235b A66 M 16 22/08/2012 14:36:49 102.7 * Chinook 0.1 2
oo12_235b A66 M 16 22/08/2012 15:43:56 6.6 * Chinook 0.2 3
oo12_235b A66 M 16 22/08/2012 15:57:38 0 † Chinook 0.3 4
  1. Capture times were determined using a combination of visual (sudden behavioral transitions in the 3-dimensional TrackPlot reconstructions of foraging dives) and acoustic (marked increases in tag hydrophone flow noise due to body acceleration) evidence
  2. aExcluding the two surface captures (†), all but three foraging dives (*, maximum depths = 141.4, 103.9 and 32.0 m, respectively) had estimated capture depths that corresponded to the maximum dive depth, as measured by the Dtag pressure sensor
  3. bFish ages are displayed according to the European system, which indicates the number of freshwater and marine annuli (rings) found in the fish scales, separated by a decimal point. Scales for which the number of annuli could not be determined are denoted by an “x” in place of a number