This project aims to investigate whether simultaneous exposure to okadaic acid and to oxybenzone, an active ingredient in sunscreens, could increase the interdiction period for snail (Donax trunculus) capture and consumption by “overloading” the metabolic pathways that ensure the elimination of this marine biotoxin. Likewise, the possibility that natural substances that act as UV filters (such as the components of certain marine macroalgae) may not have such an effect on the elimination of okadaic acid will be studied. If this hypothesis is confirmed, the use of “greener” sunscreens (with macroalgae in their composition) would be recommended, as an alternative to the common oxybenzone present in many products that contain UV sunscreens.
As a positive impact of the BLOOM & TOXIN project, an improvement in coastal water quality is expected by reducing oxybenzone levels, allowing a reduction in the time spent fishing and catching shellfish, and an increase in its quality. These improvements are also expected to have a positive impact on local tourism, also encouraging the cultivation of bivalves and algae under controlled conditions.
Funding: Universidade de Aveiro (Portugal)
