Open Access

Table 3

Monthly variations by Fork length class (FL, mm) in sex ratio of Auxis thazard landed in Southeastern Brazil between March 2018 and February 2019. χ2 = chi-square test.

  Number Frequency (%)      


FL (mm) F M F M χ2 p-value F:M
265 2 2 50.0 50.0 0.00 1.00 1:1
275 3 8 27.3 72.7 20.66 0.00 0.4:1
285 12 10 54.5 45.5 0.83 0.36 1.2:1
295 23 18 56.1 43.9 1.49 0.22 1.3:1
305 48 29 62.3 37.7 6.09 0.01 1.7:1
315 38 29 56.7 43.3 1.80 0.18 1.3:1
325 50 60 45.5 54.5 0.83 0.36 0.8:1
335 54 49 52.4 47.6 0.24 0.63 1.1:1
345 28 30 48.3 51.7 0.12 0.73 0.9:1
355 14 16 46.7 53.3 0.44 0.50 0.9:1
365 5 10 33.3 66.7 11.11 0.00 0.5:1
375 6 2 75.0 25.0 25.00 0.00 3.0:1
385 2 1 66.7 33.3 11.11 0.00 2.0:1
395 6 6 50.0 50.0 0.00 1.00 1:1
405 5 3 62.5 37.5 6.25 0.01 1.7:1
415 8 7 53.3 46.7 0.44 0.50 1.1:1
425 8 8 50.0 50.0 0.00 1.00 1:1
435 4 7 36.4 63.6 7.44 0.01 0.6:1
445 2 4 33.3 66.7 11.11 0.00 0.5:1
455 0 0 0.0 0.0
465 0 0 0.0 0.0
475 2 0 100.0 0.0 100 0.00
485 1 1 50.0 50.0 0.00 1.00 1:1
Mean 321 300 51.7 48.3 0.11 0.74 1.1

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