Relating trophic ecology and Hg species contamination in a resident opportunistic seabird of the Bay of Biscay / Nere Zorrozua, Mathilde Monperrus, Asier Aldalur, Iker Castège, Beñat Diaz, Alexandra Egunez, Aitor Galarza, Jon Hidalgo, Emilie Milon, Carola Sanperaf, Juan Arizaga.
Contributor(s): Zorrozua, Nere
| Monperrus, Mathilde | Aldalur Zulaika, Asier | Castège, Iker | Díaz, Beñat | Egunez, Alexandra | Galarza Ibarrondo, Aitor | Hidalgo, Jon | Milon, Emilie | Sanpera, Carola | Arizaga, Juan | Aranzadi Zientzia Elkartea.
Material type: 
Computer fileCitation: Zorrozua, N., Monperrus, M., Aldalur, A., Castège, I., Díaz, B., Egunez, A., Galarza, A., Hidalgo, J., Milon, E., Sanpera, C., Arizaga, J., 2020. Relating trophic ecology and Hg species
contamination in a resident opportunistic seabird of the Bay of Biscay. Environm. Research 186, e109526. https://doi.org/10.1016/j.envres.2020.109526 Publisher: [S.l.]: Elsevier, 2020Content type: texto (visual) Media type: en línea Genre/Form: Artículo científicoOnline resources: Click here to access online Summary: Methylmercury (MeHg) is the most bioavailable and toxic form of the globally distributed pollutant Hg. Organisms of higher trophic levels living in aquatic ecosystems have potentially higher concentrations of MeHg. In this work, we analysed both MeHg and inorganic Mercury (Hg(II)) concentrations from dorsal feathers of chicks from ten colonies of Yellow-legged Gull (Larus michahellis) in the south-eastern part of the Bay of Biscay. Overall, we detected a high mean MeHg concentration that, however, differed among colonies. Additionally, based on stable isotopes analysis (δ13C and δ15N) and conducting General Linear Mixed Models, we found that chicks which were mostly/mainly fed with prey of marine origin had higher levels of MeHg. We propose Yellow-legged Gull as a reliable biomonitor for Hg species, as it is easy for sampling and in compliance with the Minamata convention on Mercury.
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Methylmercury (MeHg) is the most bioavailable and toxic form of the globally distributed pollutant Hg. Organisms of higher trophic levels living in aquatic ecosystems have potentially higher concentrations of MeHg. In this work, we analysed both MeHg and inorganic Mercury (Hg(II)) concentrations from dorsal feathers of chicks from ten colonies of Yellow-legged Gull (Larus michahellis) in the south-eastern part of the Bay of Biscay. Overall, we detected a high mean MeHg concentration that, however, differed among colonies. Additionally, based on stable isotopes analysis (δ13C and δ15N) and conducting General Linear Mixed Models, we found that chicks which were mostly/mainly fed with prey of marine origin had higher levels of MeHg. We propose Yellow-legged Gull as a reliable biomonitor for Hg species, as it is easy for sampling and in compliance with the Minamata convention on Mercury.
Zorrozua, N., Monperrus, M., Aldalur, A., Castège, I., Díaz, B., Egunez, A., Galarza, A., Hidalgo, J., Milon, E., Sanpera, C., Arizaga, J., 2020. Relating trophic ecology and Hg species
contamination in a resident opportunistic seabird of the Bay of Biscay. Environm. Research 186, e109526. https://doi.org/10.1016/j.envres.2020.109526
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