Relationships between tissue contaminants and defense-related characteristics of oysters (Crassostrea virginica) from five Florida bays
Relationships between tissue contaminants and defense-related characteristics of oysters (Crassostrea virginica) from five Florida bays
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DOI：
10.1016/s0166-445x(01)00161-8
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发表时间：
2001-11-12
影响因子：
4.5
通讯作者：
Long, ER
中科院分区：
文献类型：
--
作者：
Oliver, LM;Fisher, WS;Long, ER
将双壳类防御反应与污染物暴露联系起来的证据正在增加。污染物对免疫或防御反应的影响可能会影响生物体抵抗传染病的能力。本研究探讨了牡蛎组织中积累的外来化学物质与牡蛎体内防御活动和生理条件的各种指标之间的关系。对从佛罗里达州5个海湾的22个地点收集的单个牡蛎进行了国防相关和生理测量，并对每个地点收集的牡蛎组织进行了多环芳烃(PAHs)、多氯联苯(PCbs)、金属和某些杀虫剂的分析。不同海湾和海湾内不同地点的化学物质浓度、生理条件以及血细胞和血淋巴特征各不相同。海湾内的比较显示，与牡蛎防御相关的活动高度活跃的地点往往伴随着一种或多种外来化学物质的高组织浓度。跨海湾进行的相关分析表明，大多数与国防相关的特征与至少一种污染物之间存在显著的正相关关系，包括各种多环芳烃、多氯联苯和痕量金属分析物。结合最近的其他研究，这些结果强化了这样的假设，即某些外来化学物质可能与牡蛎血细胞活性升高有关，尽管对抗病能力的最终影响尚不清楚。爱思唯尔科学公司出版。
Evidence linking bivalve defense responses with pollutant exposure is increasing. Contaminant effects on immune or defense responses could influence the ability of an organism to resist infectious disease. This study explored relationships between xenobiotic chemicals accumulated in oyster (Crassostrea virginica) tissue and various measures of putative oyster internal defense activities and physiological condition. Defense-related and physiological measurements were made on individual oysters collected from 22 sites at five Florida bays and pooled oyster tissue from each site was analyzed for polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), metals and certain pesticides. Chemical concentrations, physiological condition, and hemocyte and hemolymph characteristics varied across bays and among sites within a bay. Within-bay comparisons showed that sites with high oyster defense-related activities often had accompanying high tissue concentrations of one or more classes of xenobiotic chemicals. Correlation analysis performed across bays demonstrated significant positive relationships between most defense-related characteristics and at least one contaminant, including various PAH, PCB and trace metal analytes. In combination with other recent studies, these results strengthen the hypothesis that certain xenobiotic chemicals may be associated with elevated oyster hemocyte activities, even though the ultimate influence on disease resistance remains unknown. Published by Elsevier Science B.V.