[en] Identifying suitable aquatic organisms for biomonitoring of marine waters is crucial for effective environmental management. In this study, for the first time in the region, starfish were used as bioindicator of water quality to evaluate the Galician coast, with rich biodiversity and one of the largest maritime import hubs in Europe. For this purpose, this study focused on two common starfish species in the area: Marthasterias glacialis and Asterias rubens. Samples were collected between January and February 2021 from eight specific locations along the Galician coast, each characterized by unique features and varying levels of anthropogenic pressure. The analysis included 17 organochlorine pesticides (OCPs), as well as 17 trace elements. Notably, and for the first time in this context, saponins and marine toxins (including amnesic, lipophilic and paralytic toxins) were also analyzed in all collected samples. The results revealed that concentrations of inorganic and organic compounds in starfish were comparable to those found in other organisms traditionally used as bioindicators in the same region, such as mussels and oysters. Moreover, the obtention of saponin content at different sampling sites allows for comparisons among areas, making it possible to assess whether significant differences exist. Based on the levels of anthropogenic pressures, interspecies variations and the sensitivity of these organisms to these pollutants, this study concludes that starfish have strong potential as bioindicators for monitoring water quality along the Galician coast. They could be integrated into existing coastal monitoring programs, such as those under the Marine Strategy Framework Directive, providing complementary information alongside traditional bioindicators.
Disciplines :
Chemistry
Author, co-author :
Turull, Marta; Environmental Chemistry Department, Institute of Environmental Assessment and Water Research (IDÆA-CSIC), E-08034, Barcelona, Spain. Electronic address: marta.turull@idaea.csic.es
Budiño, Belén; Technology Center of the Aquaculture Cluster (CETGA), Punta de Couso, s/n Aguiño, E-15965, Ribeira, A Coruña, Spain
Savarino, Philippe ; Université de Mons - UMONS > Faculté des Sciences > Service de Synthèse et spectrométrie de masse organiques
Gerbaux, Pascal ; Université de Mons - UMONS > Faculté des Sciences > Service de Synthèse et spectrométrie de masse organiques
Rambla-Alegre, Maria; Institute of Agrifood Research and Technology (IRTA), Ctra Poble Nou km 5.5, E-43540, Sant Carles de la Ràpita, Spain
Cabaleiro, Santiago; Technology Center of the Aquaculture Cluster (CETGA), Punta de Couso, s/n Aguiño, E-15965, Ribeira, A Coruña, Spain
Díez, Sergi; Environmental Chemistry Department, Institute of Environmental Assessment and Water Research (IDÆA-CSIC), E-08034, Barcelona, Spain. Electronic address: sergi.diez@idaea.csic.es
Language :
English
Title :
Spatial distribution of pollutants along the Galician coast: Insights from starfish bioindicators.
S836 - Synthèse et spectrométrie de masse organiques
Research institute :
Biosciences
Funders :
Centres de Recerca de Catalunya MITECO Fundación Biodiversidad Generalitat de Catalunya
Funding text :
This work was funded by the project \u201CStrategies for the Valorization of the Starfish\u201D (ACUISTAR), with the support of Fundaci\u00F3n Biodiversidad, Ministerio para la Transici\u00F3n Ecol\u00F3gica y el Reto Demogr\u00E1fico, through Programa Pleamar co-financed by Fondo Europeo Mar\u00EDtimo y de Pesca (FEMP). The authors acknowledge support from the CERCA Programme/Generalitat de Catalunya, and thank Laura Ferreres and Anna Safont for their technical support. We also gratefully acknowledge the technical assistance of Alicia L\u00F3pez and Bel\u00E9n Fandi\u00F1o, and the collaboration of the Fishermen's Guilds (Cofrad\u00EDas de Pescadores) of Galicia.
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