Fish mouth dimensions and size selectivity in a Portuguese longline fishery |
| |
| Authors: | K Erzini J M S Gonçalves L Bentes P G Lino |
| |
| Institution: | Unidade de Ciěncias e Tecnologias dos Recursos Aquáticos (UCTRA), Universidade do Algarve, 8000 Faro, Portugal |
| |
| Abstract: | The relationship between fish total length (TL) and mouth size in six species was investigated in light of the implications for the modelling of size selectivity of hooks. Significant non-linear relationships were found in three species, suggesting that optimal size at capture is not a linear function of hook size. These results strongly support the choices made in modelling skew-normal selectivity with optimal size at capture as a function of hook size. |
| |
| Keywords: | |
|
|
