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

Magali Sabino (1, 2) , Nathalie Bodin (2, 3) , Rodney Govinden (2) , Rona Arrisol (2) , Carine Churlaud (1) , Heidi Pethybridge (4) , Paco Bustamante (1, 5)

1 LIENSs - LIttoral ENvironnement et Sociétés
2 SFA - Seychelles Fishing Authority (SFA)
3 SOS - Sustainable Ocean Seychelles
4 CSIRO Oceans and Atmosphere [Hobart]
5 IUF - Institut universitaire de France

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. population.

Mots clés: Minerals; Bioaccumulation; Marine resources; Nutritional health assessment; Food security; SIDS

Domaines: Ecotoxicologie

Magali Sabino, Nathalie Bodin, Rodney Govinden, Rona Arrisol, Carine Churlaud, et al.. The role of tropical small-scale fisheries in trace element delivery for a Small Island Developing State community, the Seychelles. Marine Pollution Bulletin, 2022, 181, pp.113870. ⟨10.1016/j.marpolbul.2022.113870⟩. ⟨hal-03773129⟩