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Table 1 Main characteristics (mean ± standard deviation) of topshells and activities according to site and size

From: Circadian behaviour of Tectus (Trochus) niloticus in the southwest Pacific inferred from accelerometry

  New Caledonia Vanuatu
  Total Large Small Total Large Small
Specimens
N Topshell 10 9 1 8 4 4
Bd   120; 121.6 72.1 108.9 ± 25.9 132.3 ± 9.2 85.5 ± 5.1
Activity (per specimen)
24-h 414 ± 101 335 ± 85 484 ± 94 443 ± 151 327 ± 118 560 ± 66
Night 393 ± 98 319 ± 85 449 ± 99 429 ± 145 320 ± 119 539 ± 60
Dawn 1 ± 3 0 ± 1 2 ± 2 2 ± 5 0 ± 1 4 ± 6
Day 7 ± 11 5 ± 7 15 ± 13 9 ± 13 5 ± 4 14 ± 17
Dusk 13 ± 6 10 ± 5 17 ± 7 1 ± 2 2 ± 3 1 ± 2
Movement duration (min)
D/ 24-hour 131 ± 50 89 ± 25 188 ± 54 178 ± 103 88 ± 38 269 ± 53
  1. Specimens were defined by number (NTopshell) and Bd (mm). Specimens are considered as small when Bd < 100 mm or as large when Bd > 100 mm. Activities were defined as the average number of movements per individual