干旱区生态环境知识资源中心(Arid): Impacts of dredging on biomarkers responses of caged bivalves in a semi-arid region (Ceara State, NE Brazil)

Arid

DOI	10.1016/j.marenvres.2019.104784
	Impacts of dredging on biomarkers responses of caged bivalves in a semi-arid region (Ceara State, NE Brazil)
	Moreira, Lucas B.1,2; Sasaki, Silvio T.3; Taniguchi, Satie 3; Bicego, Marcia C.3; Costa-Lotufo, Leticia V.1; Abessa, Denis M. S.2
通讯作者	Moreira, Lucas B.
来源期刊	MARINE ENVIRONMENTAL RESEARCH
ISSN	0141-1136
EISSN	1879-0291
出版年	2019
卷号	151
英文摘要	In this study, the performance of two native bivalves in responding to sediment resuspension was investigated during dredging operations of a semi-arid bay (Mucuripe, NE Brazil). The clam Anomalocardia flexuosa and the oyster Crassostrea rhizophorae were selected and caged in two sites influenced by the dredging plume. We assessed the bioaccumulation of metals and hydrocarbons in both species as biomarkers of exposure and then, biomarkers' responses were assessed in gills and digestive glands over a 28 days period, at 7 days intervals: the activities of phase I and II, and antioxidant enzymes, levels of lipid peroxidation and DNA strand breaks. Both transplanted bivalves accumulated Cu, polycyclic aromatic hydrocarbons (PAHs), and linear alkylbenzenes (LABs) in their whole-body tissues, whereas Ni, Pb and Zn accumulation was species-dependent. The exposure time set at day 28 was considered appropriate. Biomarkers exhibited time-related responses in both species, but gills exhibited a more sensitive response, indicating a function of barrier against the uptake of chemicals and also a relevant tissue to be targeted. In clams, Phase I and II enzymes (ethoxyresorufin O-deethylase and glutathione S-transferase) were induced during the period of intense dredging, while in oysters they were activated at the end of operations. Induction of antioxidant enzymes (glutathione peroxidase and glutathione reductase) and elevated levels DNA damage were observed in both exposure surveys. Clams and oysters were sensitive and responded to the exposure of resuspended sediments and the biomarkers of effects were associated with bioaccumulation of contaminants in the integrated analysis. These results indicate that The clam A. flexuosa and the oyster C. rhizophorae are suitable models to be used in monitoring programs or field exposure experiments in tropical regions.
英文关键词	Environmental management Environmental monitoring Marine pollution Sediment Tropical environments Tropical species
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000497258600018
WOS关键词	ENVIRONMENTAL RISK-ASSESSMENT ; OXIDATIVE STRESS BIOMARKERS ; SEDIMENT-QUALITY ; METAL BIOACCUMULATION ; ENZYMATIC BIOMARKERS ; ESTUARINE SYSTEM ; TRACE-METALS ; ORGANISMS ; TOXICITY ; EXPOSURE
WOS类目	Environmental Sciences ; Marine & Freshwater Biology ; Toxicology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology
EI主题词	2019-10-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310232
作者单位	1.Univ Fed Ceara, Inst Ciencias Mar, Fortaleza, Ceara, Brazil; 2.UNESP, Nucleo Estudos Poluicao & Ecotoxicol Aquat, Pca Infante D Henrique S-N, BR-11330900 Sao Vicente, SP, Brazil; 3.Univ Sao Paulo, Inst Oceanog, Sao Paulo, SP, Brazil
推荐引用方式 GB/T 7714	Moreira, Lucas B.,Sasaki, Silvio T.,Taniguchi, Satie,et al. Impacts of dredging on biomarkers responses of caged bivalves in a semi-arid region (Ceara State, NE Brazil)[J],2019,151.
APA	Moreira, Lucas B.,Sasaki, Silvio T.,Taniguchi, Satie,Bicego, Marcia C.,Costa-Lotufo, Leticia V.,&Abessa, Denis M. S..(2019).Impacts of dredging on biomarkers responses of caged bivalves in a semi-arid region (Ceara State, NE Brazil).MARINE ENVIRONMENTAL RESEARCH,151.
MLA	Moreira, Lucas B.,et al."Impacts of dredging on biomarkers responses of caged bivalves in a semi-arid region (Ceara State, NE Brazil)".MARINE ENVIRONMENTAL RESEARCH 151(2019).