Opportunities and challenges for fish culture in Brazilian reservoirs

Josiane Ribolli, Evoy Zaniboni Filho, Janaína dos Santos Pedron

Resumo


Abstract: Aim: Aquaculture plays an important role in the world and in Brazil. Artificial construction of water bodies, such as ponds and reservoirs, has allowed for fish culture in net cages in those environments, generating conflicts over the use of these public waters. The producers are seeking to increase production, and the ecosystem is susceptible to the impacts caused by production activity. Therefore, the aim of this review was to identify questions about these conflicts (productivity x environment) and to indicate possible solutions to the main problems related to fish farming in reservoirs. Methods: A bibliographical survey was carried out on the main aspects of fish farming in net cages in Brazilian reservoirs, describing the risks and opportunities and discussing current directions for the activity. Discussion/Conclusions: The negative aspects associated with fish culture in net cages and the possible solutions were addressed, identifying mechanisms for reducing conflicts between environmental impacts and aquaculture production. Potential solutions include the use of native species or sterile species, implementation of monitoring systems of the surrounding area, adoption of measures to reduce the accidental escape of fish, use of multitrophic culture systems, use of highly digestible diets with appropriate food management, and use of computer programs that incorporate current and historical environmental data to calculate carrying capacity and choose the most appropriate location for production. Finally, we discuss actions that can contribute to fish farming development in a safe and economically and environmentally viable manner.

Palavras-chave


eutrophication; impacts; net cage; oligotrophic; pollution.

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Licença Creative Commons
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional.

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