期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 579, 期 -, 页码 797-804出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.11.026
关键词
Polycyclic aromatic hydrocarbons (PAHS); Deepwater Horizon; Weathering; Cardiac function
资金
- Gulf of Mexico Research Initiative [SA-1520]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1543301] Funding Source: National Science Foundation
Following exposure to weathered and non-weathered oil, lethal and sub-lethal impacts on red drum larvae were assessed using survival, morphological, and cardiotoxicity assays. The LC50 for red drum ranged from 14.6 (10.3-20.9) to 213 (19.1-23.8) mu g l(-1) Sigma PAH with no effect of exposure timing during the pre-hatch window or oil weathering. Similarly, morphological deformities showed dose responses in the low ppb range. Cardiac output showed similar sensitivity resulting in a major 70% reduction after exposure to 2.6 mu g l(-1) Sigma PAH. This cardiac failure was driven by reduced stroke volume rather than bradycardia, meaning that in some species, cardiac function is more sensitive than previously thought. After the Deepwater Horizon oil spill, much of this type of work has primarily focused on pelagic species with little known about fast developing estuarine species. These results demonstrate similarity sensitivity of the red drum as their pelagic counter parts, and more importantly, that cardiac function is dramatically reduced in concert with pericardial edema. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据