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Table 3 Modal groups of size frequency distributions of males H. planatus fitted by least squares through the procedure described by Bas et al. (2005)

From: Moult cycle and growth of the crab Halicarcinus planatus (Brachyura, Hymenosomatidae) in the Beagle Channel, southern tip of South America

Mes 0 1 2 3 4 5 6 7 χ 2 P
Nov-06   3.50 ± 0.55 0.26 4.81 ± 0.17 0.06 6.19 ± 0.48 0.21 8.08 ± 0.54 0.20 9.51 ± 0.03 0.01 10.50 ± 0.30 0.13 12.80 ± 0.98 0.11 7.27 0.99
Dec-06 1.86 ± 0.12 0.01 3.52 ± 0.52 0.22 5.06 ± 0.40 0.15 6.48 ± 0.62 0.15   8.48 ± 0.58 0.22 10.00 ± 0.65 0.23 12.86 ± 0.73 0.03 3.18 0.99
Jan-07   3.50 ± 0.62 0.33 5.00 ± 0.40 0.25 6.31 ± 0.30 0.18 7.50 ± 0.50 0.10 8.80 ± 0.50 0.11 10.30 ± 0.30 0.04   5.95 0.99
Feb-07   3.01 ± 0.01 0.00 3.86 ± 0.20 0.12 5.24 ± 0.65 0.38 7.10 ± 0.42 0.20 8.49 ± 0.38 0.15 10.80 ± 0.90 0.08   5.37 0.99
Mar-07   3.90 ± 0.60 0.37   6.13 ± 1.04 0.44   8.59 ± 0.35 0.10 9.64 ± 0.20 0.07 11.43 ± 0.04 0.01 0.47 1.00
Apr-07   3.35 ± 0.40 0.16 4.80 ± 0.70 0.39   7.33 ± 0.69 0.28 8.78 ± 0.22 0.07 10.15 ± 0.60 0.11   3.12 0.99
May-07   2.78 ± 0.17 0.03 4.13 ± 0.42 0.29 5.85 ± 0.60 0.32 7.50 ± 0.30 0.12 8.50 ± 0.00 0.00 9.80 ± 0.50 0.20   5.23 0.99
June-07   3.57 ± 0.50 0.29 4.95 ± 0.42 0.32 6.16 ± 0.17 0.10 7.55 ± 0.44 0.18 9.03 ± 0.04 0.01 10.19 ± 0.50 0.10   3.93 0.99
July-07   3.81 ± 0.60 0.36 5.11 ± 0.37 0.16 6.20 ± 0.30 0.14 7.30 ± 0.28 0.10 8.30 ± 0.33 0.09 9.52 ± 0.27 0.08 12.10 ± 0.80 0.06 6.22 0.99
Aug-07   2.77 ± 0.25 0.03 3.91 ± 0.35 0.23 5.08 ± 0.33 0.22 6.45 ± 0.42 0.17 7.57 ± 0.30 0.10 9.40 ± 0.89 0.16 11.90 ± 0.14 0.09 4.69 0.99
Sept-07   2.96 ± 0.18 0.05 3.81 ± 0.28 0.16 5.11 ± 0.47 0.36 6.38 ± 0.37 0.17 7.59 ± 0.55 0.19 9.36 ± 0.19 0.03 10.60 ± 0.75 0.04 8.46 × 10−12 1
Oct-07   3.31 ± 0.19 0.11 4.72 ± 0.45 0.38 6.25 ± 0.42 0.20 7.51 ± 0.36 0.13 9.30 ± 0.73 0.17 11.39 ± 0.13 0.02   0.16 1
  1. Size (in mm CW) ± standard deviation and proportions of modal groups are shown. Critical value χ 2 = 27.58. χ 2 statistic, P associated probability of goodness of fit