Gerival Network – Impacts of artisanal fishing of white shrimp Litopenaeus schmitti Olair Rodrigues Garcia Junior, Evandro Severino Rodrigues, Alvaro Luiz Diogo Reigada

Abstract

This study aims to characterize the impact of artisanal fishing in the estuary, using the gerival net, on the capture of white shrimp, Litopenaeus schmitti, over a 12-month period (June 2015 to May 2016). Monthly captures of the species occurred with the aid of the gerival net, in 20- to 30-minute casts, depending on the tides. A total of 1,021 individuals were captured, with a biomass reaching 3,934.72 g. The average length of the cephalothorax was 25.20 mm, with a minimum of 12.94 mm and a maximum of 38.84 mm. It is estimated that in 9 months, a single fisherman, working 20 days, will capture approximately 100,000 juveniles, which will not have the chance to complete their life cycle.