Laboratório de Ciências Físicas, Universidade Estadual Do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Campos Dos Goytacazes, RJ, 28013-602, Brazil.
Laboratório de Ciências Ambientais, Universidade Estadual Do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Campos Dos Goytacazes, RJ, 28013-602, Brazil.
Biol Trace Elem Res. 2024 Mar;202(3):1279-1287. doi: 10.1007/s12011-023-03734-9. Epub 2023 Jun 21.
The potential use of elemental concentrations and element:calcium (Ca) ratios as indicators of provenance for bivalve mollusks on the Brazilian coast is evaluated herein for the first time. The approach was applied to shells of the mussel Perna perna (target of extractive fisheries) from geographically close areas but under distinct environmental and anthropogenic influences. Both concentrations of the elements normalized by Ca and the total concentrations can be applied to discriminate the mussels' origin. However, the canonical approach using the total concentrations indicated variations regarding the discriminatory power, and the concentrations of the elements normalized by Ca were more robust in differentiating the provenance of the shells. The origin of mussels was better discriminated by six elementary ratios: Al:Ca, Fe:Ca, K:Ca, Mg:Ca, Mn:Ca and Na:Ca. Thus, monitoring studies aiming to discriminate the origin of P. perna individuals along their distribution based on these elementary ratios of the shell are recommended.
本文首次评估了元素浓度和元素钙比值作为巴西沿海双壳类软体动物生源指标的潜在用途。该方法应用于地理上相近但受到不同环境和人为影响的贻贝（Perna perna）贝壳。通过 Ca 标准化的元素浓度和总浓度均可用于区分贻贝的来源。然而，使用总浓度的典型方法表明其区分能力存在差异，而通过 Ca 标准化的元素浓度在区分贝壳的生源方面更稳健。六种元素比值（Al:Ca、Fe:Ca、K:Ca、Mg:Ca、Mn:Ca 和 Na:Ca）能更好地区分贻贝的来源。因此，建议开展监测研究，根据贻贝壳中的这些元素比值来区分其分布范围内个体的生源。
