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首页> 外文期刊>Environmental toxicology and chemistry >Crude Oil Toxicity to Fiddler Crabs (Uca longisignalis and Uca panacea) from the Northern Gulf of Mexico: Impacts on Bioturbation, Oxidative Stress, and Histology of the Hepatopancreas
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Crude Oil Toxicity to Fiddler Crabs (Uca longisignalis and Uca panacea) from the Northern Gulf of Mexico: Impacts on Bioturbation, Oxidative Stress, and Histology of the Hepatopancreas

机译：墨西哥北部湾对提琴蟹（Uca longisignalis和Uca panacea）的原油毒性：对生物扰动，氧化应激和肝胰腺组织学的影响

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摘要

The intensive drilling and extraction of fossil fuels in the Gulf of Mexico result in a considerable risk of oil spills impacting its coastal ecosystems. Impacts are more likely to be far-reaching if the oil affects ecosystem engineers like fiddler crabs, whose activities modify biogeochemical processes in the sediment. The present study investigated effects of oil on the fiddler crabs Uca longisignalis and Uca panacea, which are important as ecosystem engineers and as prey for a wide variety of species. The present study used mesocosms and microcosms to investigate the effects of crude oil on fiddler crab burrowing and to assess cellular and tissue damage by the oil. Fiddler crabs were exposed for periods of 5 or 10 d to oil concentrations up to 55 mg/cm(2) on the sediment surface. Their burrowing was delayed, their burrows were smaller, and they transported less sediment in the presence of oil. The hepatopancreas had elevated levels of oxidative stress and a higher abundance of blister cells, which play a role in secretory processes. Interspecific differences were observed; most effects were strongest in U. panacea, though burrowing was more strongly affected in U. longisignalis. The present study demonstrates that crude oil is likely to impact fiddler crabs and many species that depend on them for their diet or for the ecological changes that result from their burrowing. (C) 2017 SETAC
机译：墨西哥湾对化石燃料的密集钻探和开采导致大量漏油风险影响其沿海生态系统。如果石油影响像小提琴蟹这样的生态系统工程师，其影响会改变沉积物中的生物地球化学过程，那么影响就可能更深远。本研究调查了油对招潮蟹Uca longisignalis和Uca panacea的影响，这些螃蟹作为生态系统工程师和多种物种的猎物很重要。本研究使用中宇宙和微观世界来研究原油对招蟹的挖洞的影响，并评估该油对细胞和组织的损害。招潮蟹暴露于沉积物表面的油浓度高达55 mg / cm（2）的时间为5或10 d。他们的洞穴被推迟了，他们的洞穴较小，并且在有油的情况下，它们的泥沙输送量减少了。肝胰脏具有较高的氧化应激水平和较高的水泡细胞丰度，这在分泌过程中起作用。观察到种间差异；尽管穴居在长柄乌贼中受到的影响更大，但在万能药中大多数作用最强。本研究表明，原油很可能会影响招潮蟹和许多依赖它们的饮食或因挖洞而引起的生态变化的物种。 （C）2017年SETAC

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