Trawl Fishing Fleet Operations Used to Illustrate the Life Cycle of the Southern Brown Shrimp: Insights to Management and Sustainable Fisheries

The purpose of this study was to better understand the life cycle brown shrimp along Amazon Continental Shelf by using spatial and temporal trawl fleet activities. A total 208,121 specimens 1281 trawls were studied throughout course 13 years size composition. To investigate differences in length composition between fishing grounds, months, depth, a PERMANOVA analysis employed. geographic information system developed for environmental characterisation spatiotemporal distribution. Our findings show that industrial has close relationship with biological characteristics, following migration patterns different locations, depths during stages their cycle, acts on two-yearly cohorts. management measures limiting effort (number vessels) appear enough avoid overcapitalisation, but closed period proposed no-take zone insufficient what originally proposed. Ecosystem-based strategies should be addressed immediately because they would far more effective than traditional fishery-based promoting sustainable fishing.