Essay About Isotopic Ecology (δ13c and δ15n) of Fish Farming Species: Possible Consequences for Human Consumption

Authors

  • Rodrigo de Jesus Silva Universidade Federal do Acre
  • Bernardo Berenchtein Produção e Nutrição de Não Ruminantes Instituto de Ciências Sociais, Educação e Zootecnia Universidade Federal do Amazonas Campus do Baixo Amazonas - Parintins/AM
  • Mauricio Lamano Ferreira CENA, Universidade de São Paulo, Campus de Piracicaba, Av. Centenário 303, Piracicaba, SP, 13416-000, Brasil
  • Luiz Antonio Martinelli CENA, Universidade de São Paulo, Campus de Piracicaba, Av. Centenário 303, Piracicaba, SP, 13416-000, Brasil

DOI:

https://doi.org/10.5902/2179460X18431

Keywords:

diet fish, isotopic signal, source environments

Abstract

This study aims to assess changes of the isotopic signal - δ13C and δ15N - of muscle tissue among fish species of natural and breeding environments as a way to understand the relationship between habitat, diet and trophic composition of these watersports animals. Thus, we used four different species of fishes, being the peacock bass and tuna from different natural environments and the salmon and tilapia of breeding environments or fattening farms. From this, excepting the species of tuna the values of δ13C of Tilapia was significantly larger than others - peacock bass, salmon and tambaqui - while for the values of δ15N the species of Tilapia were significantly the lowest of all. Furthermore, the hatchery species of Tilapia and Salmon considerably had the lower variability. These results together suggest a significant difference in isotopic signal between species of hatchery and natural environments, reflecting different diets and composition of food chains according to the source environment of species.

 

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References

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MANETTA, G.I., BENEDITO-CECILIO, E.; MARTINELLI, L.A. Carbon sources and trophic position of the main species of fishes of Baía River, Paraná River floodplain, Brazil. Brazilian Journal Biology, v. 63, n. 2, p. 283-290, 2003.

MARTINELLI, L.A.; OMETTO, J.P.H.B.; FERRAZ, E.S. et al. Desvendando Questões Ambientais com Isótopos Estáveis. São Paulo: Oficina de Textos, 2009.

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Published

2016-01-31

How to Cite

Silva, R. de J., Berenchtein, B., Ferreira, M. L., & Martinelli, L. A. (2016). Essay About Isotopic Ecology (δ13c and δ15n) of Fish Farming Species: Possible Consequences for Human Consumption. Ciência E Natura, 38(1), 24–31. https://doi.org/10.5902/2179460X18431

Issue

Vol. 38 No. 1 (2016)

Section

Biology-Ecology

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