Abstract:
:Mercury (Hg) is a highly toxic element for living organisms and is known to bioaccumulate and biomagnify. Here, we analyze the response of benthic foraminifera communities cultured in mesocosm and exposed to different concentrations of Hg. Standard morphological analyses and environmental DNA metabarcoding show evidence that Hg pollution has detrimental effects on benthic foraminifera. The molecular analysis provides a more complete view of foraminiferal communities including the soft-walled single-chambered monothalamiids and small-sized hard-shelled rotaliids and textulariids than the morphological one. Among these taxa that are typically overlooked in morphological studies we found potential bioindicators of Hg pollution. The mesocosm approach proves to be an effective method to study benthic foraminiferal responses to various types and concentrations of pollutants over time. This study further supports foraminiferal metabarcoding as a complementary and/or alternative method to standard biomonitoring program based on the morphological identification of species communities.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Frontalini F,Greco M,Di Bella L,Lejzerowicz F,Reo E,Caruso A,Cosentino C,Maccotta A,Scopelliti G,Nardelli MP,Losada MT,Armynot du Châtelet E,Coccioni R,Pawlowski Jdoi
10.1016/j.marpolbul.2017.10.022subject
Has Abstractpub_date
2018-04-01 00:00:00pages
512-524issue
2eissn
0025-326Xissn
1879-3363pii
S0025-326X(17)30840-8journal_volume
129pub_type
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