Abstract：
: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.
journal_name
Environ Resjournal_title
Environmental researchauthors
Zorrozua N,Mathilde Monperrus,Asier Aldalur,Castège I,Diaz B,Egunez A,Galarza A,Hidalgo J,Milon E,Sanpera C,Arizaga Jdoi
10.1016/j.envres.2020.109526subject
Has Abstractpub_date
2020-07-01 00:00:00pages
109526eissn
0013-9351issn
1096-0953pii
S0013-9351(20)30419-9journal_volume
186pub_type
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