Table 1. Sex ratio with shell height of mussel Mytilus coruscus
Shell height (mm) | Number | Sex ratio (F:M) | Female (%) | Male (%) | Chi-square | p-value | Dominant sex |
Total | Female | Male |
20.1–30.0 | 35 | 14 | 21 | 1:1.50 | 40.00 | 60.00 | 1.40 | 0.310 | ♂ |
30.1–40.0 | 35 | 16 | 19 | 1:1.19 | 45.71 | 54.29 | 0.26 | 0.737 |
40.1–50.0 | 41 | 19 | 22 | 1:1.16 | 46.34 | 53.66 | 0.22 | 0.759 |
50.1–60.0 | 57 | 30 | 27 | 1:0.90 | 52.63 | 47.37 | 0.16 | 0.795 | ♀ |
60.1–70.0 | 35 | 23 | 12 | 1:0.52 | 65.71 | 34.29 | 3.46 | 0.084 |
70.1–80.0 | 16 | 6 | 10 | 1:1.67 | 37.50 | 62.50 | 1.00 | 0.461 | ♂ |
80.1–90.0 | 33 | 21 | 12 | 1:0.57 | 63.64 | 36.36 | 2.46 | 0.158 | ♀ |
90.1–100.0 | 36 | 24 | 12 | 1:0.50 | 66.67 | 33.33 | 4.00 | 0.061 |
100.1–110.0 | 30 | 18 | 12 | 1:0.67 | 60.00 | 40.00 | 1.20 | 0.365 |
110.1–120.0 | 32 | 28 | 4 | 1:0.14 | 87.50 | 12.50 | 18.00 | <0.001 |
120.1–130.0 | 13 | 12 | 1 | 1:0.08 | 92.31 | 7.69 | 9.31 | 0.003 |
130.1≤ | 14 | 12 | 2 | 1:0.17 | 85.71 | 14.29 | 7.14 | 0.012 |
Total | 377 | 223 | 154 | 1:0.69 | 59.15 | 40.85 | 12.63 | <0.001 |