| Autor: |
Senez-Mello TM; Postgraduate Program in Dynamics of Oceans and Earth, Federal Fluminense University, Niteroi, RJ, Brazil. thaise_senez@id.uff.br., Crapez MAC; Postgraduate Program in Dynamics of Oceans and Earth, Federal Fluminense University, Niteroi, RJ, Brazil., Ramos E Silva CA; Postgraduate Program in Dynamics of Oceans and Earth, Federal Fluminense University, Niteroi, RJ, Brazil.; Center for Study of Water, Biomass and Oil (NAB), Federal Fluminense University, Niteroi, RJ, Brazil., Silva ET; Department of Oceanography and Limnology, Federal University of Rio Grande do Norte, Natal, RN, Brazil., Fonseca EM; Postgraduate Program in Dynamics of Oceans and Earth, Federal Fluminense University, Niteroi, RJ, Brazil. |
| Jazyk: |
angličtina |
| Zdroj: |
Scientific reports [Sci Rep] 2020 Jan 14; Vol. 10 (1), pp. 246. Date of Electronic Publication: 2020 Jan 14. |
| DOI: |
10.1038/s41598-019-57152-w |
| Abstrakt: |
In this study, we analyzed the bioconcentration of Cd, Cr, Cu, Pb, Ni, and Zn in the soft tissue of transplanted oysters in two sites in the Potengi estuary for six months. Native oysters collected before and after the transplantation experiment provided the background for statistical analyses. Cd, Cr, and Ni showed a strong inverse correlation with oyster weight in both sites. Transplantation upstream of the estuary presented increasing concentrations of Zn, Cu, and Pb and condition index (CI) and decreasing trends for Cd and Ni, whereas Cr oscillated significantly. In the downstream transplantation, Cu, Pb, and Zn and the CI tended to decrease, whereas for Ni, Cd, and Cr, the concentrations increased. Spatiotemporal principal component analysis correlated these results mainly with proximity to the polluting source, seasonality, and previous exposure to heavy metals. These results helped interpret the responses provided by these biomonitors to environmental changes, whether they are natural or anthropogenic. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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