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Bioenergetics modeling and sustainability indicators to analyze the environmental impact of tilapia production in cages and ponds in the Southeast Region of Brazil

Abstract

Flooded areas by reservoirs and rural properties are used for fish production and is an important economic and social alternative for local populations. However, waste released by aquaculture have become a concern for the sustainable development of the activity. In this context, this study aims to apply a bioenergetic mathematical model integrated with environmental indicators to simulate the waste load and environmental impact of Nile tilapia (Oreochromis niloticus) commercial farms operating with cages systems and earth ponds in southeast region of Brazil. A production data and information meta-analysis related to environmental variables from eight commercial farms processed through the application of environmental sustainability indicators (ISA). These data used for determining the thermal growth coefficient (TGC) of fish body and subsequent bioenergetic modeling the factorial design for setting effluent load generated from O. niloticus. Water, sediment, fish produced, diet used and greenhouse gases samples collected three times throughout the production cycle from each property. The values obtained and compared among systems in order to subsidize the definition of ISA for each project. The indicators will be transformed into scale performance and then the indices of environmental sustainability by linear combination will be calculated. These indices integrated with the nutritional bioenergetic model for the development of a mathematical model, which will carry out environmental impact simulations O. niloticus farms operating in cages systems and earth ponds. The results will help managers and aquaculture producers in planning and management of a sustainable activity. (AU)

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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

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Filed patent(s) as a result of this research project

PROCESSO DE OBTENÇÃO DE PARÂMETROS DE CULTIVO EM AQUICULTURA E USO DO MESMO BR102019023325-7 - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) . GUILHERME WOLFF BUENO ; FRANCISCO ERNESTO MORENO BERNAL ; RODRIGO ROUBACH - November 2019, 06