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Table 2 Summary of tag attachment durations for 10 tag attachment configurations for humpback whales (Megaptera novaeangliae) and blue whales (Balaenoptera musculus), grouped for statistical analysis as suction cup, suction cup with dart, two darts with petals, four darts (without petals), and four darts (with petals)

From: Testing tag attachments to increase the attachment duration of archival tags on baleen whales

Tag configurations Humpback whales Blue whales
N Median duration (h) Duration range (h) Reaction binsa Placement scoresb N Median duration (h) Duration range (h) Reaction bins Placement scores
Suction cup (rigid) 11 3.40 0.32–6.82 2, 2, 2, 3, 3, 4, 4, 5, 5, 5 10 10.86 0.33–24.25 1, 1, 1, 1, 2, 2, 2, 2, 2, 4
Suction cup (semirigid) with short stainless steel dart 4 0.38 0.00–2.54 1, 2, 2      
Darts—two with petals
Titanium—two short 3-petals darts 2 4.73 1.47–8.00 2, 5 1, 1      
Titanium—two long 6-petal darts 1 6.92 5 2      
Darts—four without petals
Stainless steel—four conical darts 1 0.00 3 1 0.25 2 2
Stainless steel—four triangular barbs 2 0.95 0.65–1.25 2 2, 2 1 0.03 2 3
Darts—four with petals
Titanium—two long 6-petal/two short 3-petal darts 1 64.52 2 2 3 115.21 75.38–308.95 2, 2, 2 1, 2, 3
Titanium—four long 6-petal darts 4 10.04 0.02–49.92 4, 4, 4, 5 1, 2, 3 1 393.60 2 2
Stainless steel—four long 3-petal darts 2 40.93 40.23–41.63 1, 3 1, 2 1 51.58 4 1
Stainless steel—four long 6-petal darts 3 10.26 2.63–46.24 2, 5, 5 1, 2, 3 3 259.21 38.13–392.40 2, 2, 4 1, 2, 2
  1. See “Methods”: Sample Collection for Reaction Bins and Placement Scores scoring definitions
  2. aThree tagging events were unable to be scored. Total numbers in reaction bins do not match sample size
  3. bTwo tagging events could not be scored for placement. Total numbers in placement scores do not match sample size