Abstract
The Patos Lagoon estuary is considered a suitable aquaculture site because it is a sheltered ecosystem, which favors cage and pen rearing. The viability of whitemouth croaker (Micropogonias furnieri) production in cages has not been investigated. Therefore, this work had the objective to evaluate growth and survival of M. furnieri in rearing conditions in the wild, in cold and warm seasons. Cages (3 x 3 x 1.2 m; length x width x height) were installed near a pier at the Saco do Justino inlet in the Patos Lagoon estuary (Rio Grande- RS). Whitemouth croaker survival during the cold season was 76%, while during warm season it was 67%. At the end of the winter rearing period a specific growth rate of 0.40%/day was achieved, while during the warm it averaged 0.81%/day. Estuarine cage culture of whitemouth croaker can be done all year round, but it is important to improve survival and growth, during the cold season.
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