The article identifies the socioeconomic profile of sport fishermen and characterizes this production chain in the municipality of São Caetano de Odivelas, State of Pará. The research took place in July 2019, through the application of questionnaires to sport fishermen. The age of the fishermen ranged from 21 to 80 years old, 53% had completed higher education, 15% classified autonomous and businessmen, and 47% had monthly family income above four minimum wages. About 78% did not have the General Fishing Registry (GFP), 38% used a rod with a reel and had as main target species: snook (Centropomus sp.) and Acoupa weakfish (Cynoscion acoupa), that are caught mainly with natural bait. The purchase of food, fuel and lodging was carried out in the municipality itself, contributing to the circulation of capital. The region had 91 fisher guiding and 22 fishing points characterized as the main ones for the practice of the activity. It was concluded that sport fishing is an activity that effectively contributes to income generation in the municipality, mainly to the social actors involved. An adequate development policy would be important to strengthen this production chain and expand the positive impacts on the local economy.

Survival and growth of the native oyster Crassostrea gasar along the juvenile and adult phases were evaluated in three different stocking densities [low (D), medium (2D) and high (3D)] and in two grow-out systems (fixed and floating system). The fixed system consisted of a rack made with PVC, fixed from the bottom with wood sticks. The floating system consisted of floating bags suspended by a rack made with PVC and maintained submerged from the seawater surface by eight floats. Survival and shell height of oysters cultured after 30, 60 and 90 days were registered in each phase and in each grow-out system. Results showed that the grow-out system did not affect survival and growth of C. gasar in the juvenile and adult phases. The tested densities affected the survival of oysters cultured over time in both phases but did not affect oyster growth. At times analyzed, it was observed positive growth in juvenile oysters grow after 90 days of culture. However, in the adult phase, no growth was observed after 90 days of culture. Oyster yield was higher in the density 3D, in both juvenile and adult phases. These findings contributed to the development of the oyster C. gasar culture.

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