Table 2. Comparison of fishers’ harvests and fishers’ harvests plus unharvested individuals found in the underwater census in two fishing areas sampled within the Infiernillo Channel for two species of callo de hacha.

Paredones fishing area† Hona iyat fishing area‡
Groups compared Atrina tuberculosa Pinna rugosa Abundance ratio Atrina tuberculosa Pinna rugosa Abundance ratio
Composition of fishers’ harvests + underwater census 81.35%
(397)§
18.65%
(91)
5:1 70.32%
(263)
29.68%
(111)
2:1

Composition of fishers’ harvests
93.72%
(343)
6.28%
(23)
15:1 94.74%
(198)
5.26%
(11)
18:1

†The groups were significantly different (χ² = 58.15827, df = 1, p < 0.0001).
‡The groups were significantly different (χ² = 106.1547, df = 1, p < 0.0001).
§The number of individuals is provided in parentheses.