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Cyanobacteria associated with tilapia production in fish tank network: investigating the presence of cyanotoxins in water and fish

Grant number: 15/13025-7
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): August 01, 2015
Effective date (End): January 31, 2018
Field of knowledge:Agronomical Sciences - Fishery Resources and Fishery Engineering - Aquaculture
Cooperation agreement: Innovation Fund Denmark
Principal researcher:Gianmarco Silva David
Grantee:Maria Fernanda Falcone Dias
Home Institution: Departamento de Descentralização do Desenvolvimento (APTA Regional). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil
Associated research grant:13/50504-5 - Improved quality of cultured fish for human consumption, AP.TEM


Currently, intensive fish production systems are an important source of animal protein due to the enlarged demand caused by the increase of the world population and the decrease of fish stocks. Despite this importance, the high density of fish in cages in São Paulo triggers a series of adverse effects of the production systems. Among them, the introduction of massive amounts of food used for fish feeding and the high concentration of excreta released by them favor the eutrophication of the waters, culminating in the increased growth of certain groups of cyanobacteria leading to blooms formation. This in turn can lead to production of cianotoxins (microcystins and saxitoxins, among others), which results in decreased commercial appeal and health risks for consumers of the fish products. In this sense, this proposal has the general objective to study the production and accumulation of cianotoxins in waterbodies hosting cages used for the production of tilápia. This information will provide a better understanding of the effects caused by cyanobacteria in cages used for tilápia production and also help in the development of best management practices of these systems in an attempt to reduce the growth of cyanobacteria. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RODRIGUES, MARIANNA VAZ; FRANCISCO, CLAIRE JULIANA; DAVID, GIANMARCO S.; DA SILVA, REINALDO JOSE; FALCONE-DIAS, MARIA FERNANDA; ARAUJO JUNIOR, JOAO PESSOA. Monitoring of Francisella noatunensis subsp orientalis in farmed Nile tilapia (Oreochromis niloticus) in Brazil. AQUACULTURE INTERNATIONAL, v. 26, n. 1, p. 127-138, . (15/13025-7, 13/50504-5, 14/13718-0, 14/15859-0)
FALCONE-DIAS, MARIA FERNANDA; RODRIGUES, MARIANNA VAZ; NIELSEN, JEPPE LUND; DE JONGE, NADIEH; JORGENSEN, NIELS O. G.; ALONSO, DIEGO PERES; DAVID, GIANMARCO S.; DA SILVA, REINALDO JOSE; ARAUJO JUNIOR, JOAO PESSOA. Occurrence of Cyanobacteria and microcystins in hydroelectric reservoirs used for fish farming. JOURNAL OF WATER AND HEALTH, v. 18, n. 6, p. 983-994, . (13/50504-5, 14/13718-0, 15/13025-7)

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