Impacts of bycatch from beach seining: a case study of a shrimp fishery in Brazil

It is commonly assumed that beach seining (BS) is more sustainable than bottom trawling because it involves non-motorized operations and limited fishing power. However, no scientific evidence supports this assumption. To address this gap, we evaluated the impact of beach seining, taking a small-scale shrimp fishery in northeast Brazil. Data collected monthly from December 2016 to November 2017 and in literature, were assessed (BS 31,001 individuals, 119 species, 37 families, and 19 orders; BT 6,031 individuals, 58 species, 20 families, and 14 orders). Beach seining demonstrated a lower proportion of bycatch (BS 1:2.3; BT 1:3.2), higher total shrimp catch (BS 87.2 t; BT 65 t), and greater species diversity than bottom trawling catches (BS 119; BT 58). Other aspects were closer associated with bottom trawling, such as the composition of dominant families (Sciaenidae and Pristigasteridae), the proportion of rare species (BS 30%; BT 24%) juveniles (BS 11g; BT 13g), the risk of species extinction, and the composition of ecological guilds. Despite their social significance, both fishing gears showed similar ecological indicators and adverse effects. The findings establish that the ecological concerns related to the impact of bottom trawling are also applicable to beach seine.


bottom trawl, small-scale fisheries, artisanal fisheries, food security, discard, ecological guild

Full Text

Publisher's official version
141 Mo
Table SI.
13284 Ko
How to cite
Passarone RAFAELA, Frédou THIERRY, Lira ALEX S., Pelage Latifa, Eduardo LEANDRO N., Santos LUCAS, Craveiro CECÍLIA, Silva EMANUELL F., Lucena-Frédou FLÁVIA (2024). Impacts of bycatch from beach seining: a case study of a shrimp fishery in Brazil. Anais Da Academia Brasileira De Ciencias. 96 (2). 14p..,

Copy this text