The role of tropical small-scale fisheries in trace element delivery for a Small Island Developing State community, the Seychelles

Sabino, Magali A.; Lamboy, Nathalie Bodin; Govinden, Rodney; Arrisol, Rona; Churlaud, Carine; Pethybridge, Heidi; Bustamante, Paco

The role of tropical small-scale fisheries in trace element delivery for a Small Island Developing State community, the Seychelles

2022

The concentrations of 13 trace elements were determined in 1032 muscles of 54 small-scale fisheries species collected from the Seychelles waters between 2013 and 2019. Overall, profiles were dominated by zinc (Zn) > arsenic (As) > iron (Fe) > copper (Cu) > selenium (Se), with the spiny lobsters, spanner crab and octopus exhibiting the highest levels of As, Cu and Zn while fish had higher Fe concentrations. Both taxonomy-dependent processes and ecological factors explained the interspecific differences of trace element profiles observed. A benefit-risk assessment revealed that crustaceans and cephalopods were good sources of Cu and Zn. One portion of any fish could provide 30–100 % of daily Se needs, and one portion of demersal and pelagic teleost fish could bring 5–20 % of Cu, Fe and Zn needs, especially for young adult and adult women. Finally, our analysis showed that there was very low health risks associated with small-scale fisheries consumption for the Seychelles population.

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