Abstract
Seawater contamination with metals, such as copper (Cu), is a notable local impact threatening coral reefs. Cu effects on biomarkers associated with photosynthesis, oxidative status and calcification were evaluated in the Brazilian coral Mussismilia harttii using a marine mesocosm facility. Polyps were kept under control conditions (1.9 μg L−1 Cu) or exposed to dissolved Cu (3.0, 4.8, and 6.7 μg L−1) for 12 days. Photochemical efficiency of the photosystem II of symbiotic algae (zooxanthellae) was measured and polyps were analyzed for antioxidant capacity, lipid peroxidation, DNA damage, and carbonic anhydrase Ca-ATPase, Mg-ATPase and (Ca,Mg)-ATPase activities after 12 days. Results highlighted the effects of Cu exposure, leading corals to an oxidative stress condition [increased total antioxidant capacity (TAC) and DNA damage] and a possible reduced calcification ability [decreased (Ca,Mg)-ATPase activity]. Therefore, biomarkers associated with oxidative status (TAC and DNA damage) and calcification [(Ca, Mg)-ATPase] are indicated as good predictors of corals health.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 248-257 |
| Number of pages | 10 |
| Journal | Marine environmental research |
| Volume | 130 |
| DOIs | |
| State | Published - 2017 |
Bibliographical note
Funding Information:The International Development Research Centre (IDRC, Ottawa, Canada; grant # 104519-003), Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES ? Programa Ci?ncias do Mar, Bras?lia, DF, Brazil; grant # 84/2010) and Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq ? Instituto Nacional de Ci?ncia e Tecnologia de Toxicologia Aqu?tica, Bras?lia, DF, Brazil; grant # 573949/2008-5) are acknowledged for their financial support. The Coral Vivo Project and its sponsors Petrobras, through the Petrobras Socio-environmental Program, and Arraial d'Ajuda Eco Parque are acknowledged for their support in field research. A. Bianchini is a research fellow from the Brazilian CNPq (Proc. # 307647/2016-1) and supported by the International Canada Research Chair Program from IDRC. L.F.B. Marangoni was a graduate fellow from CAPES.
Funding Information:
The International Development Research Centre (IDRC, Ottawa, Canada; grant # 104519-003), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES – Programa Ciências do Mar, Brasília, DF, Brazil; grant # 84/2010) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq – Instituto Nacional de Ciência e Tecnologia de Toxicologia Aquática, Brasília, DF, Brazil; grant # 573949/2008-5) are acknowledged for their financial support. The Coral Vivo Project and its sponsors Petrobras, through the Petrobras Socio-environmental Program, and Arraial d'Ajuda Eco Parque are acknowledged for their support in field research. A. Bianchini is a research fellow from the Brazilian CNPq (Proc. # 307647/2016-1) and supported by the International Canada Research Chair Program from IDRC. L.F.B. Marangoni was a graduate fellow from CAPES.
Publisher Copyright:
© 2017 Elsevier Ltd
Keywords
- Biomarkers
- Calcification
- Copper
- Coral
- Ecotoxicology
- Marine mesocosm
- Mussismilia harttii
- Oxidative stress
ASJC Scopus subject areas
- Oceanography
- Aquatic Science
- Pollution
