Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum

ABSTRACT Macrobrachium amazonicum is the native freshwater prawn species with the greatest potential for captive production in Brazil. The stable isotope carbon and nitrogen technique (δ13C and δ15N) is efficient to determine the contribution of different food sources to a given or...

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Autores principales:	Heldt,Ademir, Suita,Sabrina, Dutra,Fabrício Martins, Pereira,Alexandre Leandro, Ballester,Eduardo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	Amazon river prawn isotopes fractionation nutritional composition aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200282
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spelling	oai:scielo:S0718-560X20190002002822019-06-04Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicumHeldt,AdemirSuita,SabrinaDutra,Fabrício MartinsPereira,Alexandre LeandroBallester,Eduardo Amazon river prawn isotopes fractionation nutritional composition aquaculture ABSTRACT Macrobrachium amazonicum is the native freshwater prawn species with the greatest potential for captive production in Brazil. The stable isotope carbon and nitrogen technique (δ13C and δ15N) is efficient to determine the contribution of different food sources to a given organism. We used this technique to estimate the contribution of the food sources in the biomass gain of M. amazonicum. Fish fillets were used to determine the isotopic fractionation between juveniles of M. amazonicum and a standard food source. Juvenile M. amazonicum were submitted to four treatments with different food availability to determine their contributions; T1: without soil substrate and with feed supply; T2: without soil substrate and feed supply; T3: with soil substrate, feed supply and addition of an aquatic macrophyte (Elodea sp.); and, T4: with soil substrate, aquatic macrophytes and without feed supply. Periphyton, plankton and precipitated organic material were present in all treatments. The isotopic fractionation was 0.57 ± 0.07 (carbon) and 2.14 ± 0.18 (nitrogen). The prawn fed with ration presented growth 2.4 and 2.82 times higher in the treatments without substrate (T1) and with substrate and macrophytes (T3), respectively. The contribution of the food sources reinforces omnivore in prawn. The benthic organisms and feed supply were fundamental for the better growth performance of M. amazonicum. Estimating the effective contributions of food sources can help in developing diets more adequate for the species, increasing productivity, reducing costs and reducing the environmental impact of waste substances.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.2 20192019-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200282en10.3856/vol47-issue2-fulltext-8
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Amazon river prawn isotopes fractionation nutritional composition aquaculture
spellingShingle	Amazon river prawn isotopes fractionation nutritional composition aquaculture Heldt,Ademir Suita,Sabrina Dutra,Fabrício Martins Pereira,Alexandre Leandro Ballester,Eduardo Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum
description	ABSTRACT Macrobrachium amazonicum is the native freshwater prawn species with the greatest potential for captive production in Brazil. The stable isotope carbon and nitrogen technique (δ13C and δ15N) is efficient to determine the contribution of different food sources to a given organism. We used this technique to estimate the contribution of the food sources in the biomass gain of M. amazonicum. Fish fillets were used to determine the isotopic fractionation between juveniles of M. amazonicum and a standard food source. Juvenile M. amazonicum were submitted to four treatments with different food availability to determine their contributions; T1: without soil substrate and with feed supply; T2: without soil substrate and feed supply; T3: with soil substrate, feed supply and addition of an aquatic macrophyte (Elodea sp.); and, T4: with soil substrate, aquatic macrophytes and without feed supply. Periphyton, plankton and precipitated organic material were present in all treatments. The isotopic fractionation was 0.57 ± 0.07 (carbon) and 2.14 ± 0.18 (nitrogen). The prawn fed with ration presented growth 2.4 and 2.82 times higher in the treatments without substrate (T1) and with substrate and macrophytes (T3), respectively. The contribution of the food sources reinforces omnivore in prawn. The benthic organisms and feed supply were fundamental for the better growth performance of M. amazonicum. Estimating the effective contributions of food sources can help in developing diets more adequate for the species, increasing productivity, reducing costs and reducing the environmental impact of waste substances.
author	Heldt,Ademir Suita,Sabrina Dutra,Fabrício Martins Pereira,Alexandre Leandro Ballester,Eduardo
author_facet	Heldt,Ademir Suita,Sabrina Dutra,Fabrício Martins Pereira,Alexandre Leandro Ballester,Eduardo
author_sort	Heldt,Ademir
title	Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum
title_short	Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum
title_full	Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum
title_fullStr	Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum
title_full_unstemmed	Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum
title_sort	stable isotopes as a method for analysis of the contribution of different dietary sources in the production of macrobrachium amazonicum
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200282
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Stable isotopes as a method for analysis of the contribution of different dietary sources in the production of Macrobrachium amazonicum

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