What question did this study set out to answer?

To evaluate whether combining stable isotope ratios and trace element profiling can accurately determine the geographical provenance and production system (wild versus farmed) of Amazonian pirarucu (Arapaima gigas).

August 14, 2026Isotopes in Environmental and Health Studies

A multi-tracer approach using stable isotopes and elements to assess provenance of Arapaima gigas

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Authors

GFGilmar Antonio Silva Filho FCFábio José Viana Costa CNClésia C. Nascentes

Discussion

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Overview

Chemical profiling reveals accurate discrimination of wild and farmed Arapaima gigas, highlighting a robust framework for seafood traceability and fisheries conservation.

Key Points

To evaluate whether combining stable isotope ratios and trace element profiling can accurately determine the geographical provenance and production system (wild versus farmed) of Amazonian pirarucu (Arapaima gigas).
Analyzed dorsal muscle tissue from 79 reference fish of known origin, including farmed fish from intensive aquaculture and wild-caught fish from the Amazon and Tocantins–Araguaia river basins in Brazil.
Assessed 52 blind commercial samples purchased from retail establishments in the Brazilian Federal District to evaluate practical market utility.
Quantified δ¹³C, δ¹⁵N, and trace element mass fractions (including Cs and Sr) and modeled origin discrimination using linear discriminant analysis (LDA).
Stable isotope ratios, particularly δ¹³C, effectively separated farmed fish from wild populations across different river basins.
Trace element analysis showed significant differences in cesium (Cs) and strontium (Sr) concentrations between wild river basins, enabling complete discrimination of reference groups under cross-validation.
Commercial market samples exhibited widespread dispersion within the discriminant space, indicating heterogeneous sourcing and potential mixing across supply chains.

Cite This Study

Filho et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec775b70b84ec8b913cf2 https://doi.org/10.1080/10256016.2026.2710121

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August 14, 2026Isotopes in Environmental and Health Studies

A multi-tracer approach using stable isotopes and elements to assess provenance of Arapaima gigas

View Full Paper

Ask AI

Bookmark

Authors

GFGilmar Antonio Silva Filho FCFábio José Viana Costa CNClésia C. Nascentes

Discussion

Member takes

Overview

Chemical profiling reveals accurate discrimination of wild and farmed Arapaima gigas, highlighting a robust framework for seafood traceability and fisheries conservation.

Key Points

To evaluate whether combining stable isotope ratios and trace element profiling can accurately determine the geographical provenance and production system (wild versus farmed) of Amazonian pirarucu (Arapaima gigas).
Analyzed dorsal muscle tissue from 79 reference fish of known origin, including farmed fish from intensive aquaculture and wild-caught fish from the Amazon and Tocantins–Araguaia river basins in Brazil.
Assessed 52 blind commercial samples purchased from retail establishments in the Brazilian Federal District to evaluate practical market utility.
Quantified δ¹³C, δ¹⁵N, and trace element mass fractions (including Cs and Sr) and modeled origin discrimination using linear discriminant analysis (LDA).
Stable isotope ratios, particularly δ¹³C, effectively separated farmed fish from wild populations across different river basins.
Trace element analysis showed significant differences in cesium (Cs) and strontium (Sr) concentrations between wild river basins, enabling complete discrimination of reference groups under cross-validation.
Commercial market samples exhibited widespread dispersion within the discriminant space, indicating heterogeneous sourcing and potential mixing across supply chains.

Cite This Study

Filho et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec775b70b84ec8b913cf2 https://doi.org/10.1080/10256016.2026.2710121

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