• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecosphere >Exploration of the 2016 Yellowstone River fish kill and proliferative kidney disease in wild fish populations
【24h】

Exploration of the 2016 Yellowstone River fish kill and proliferative kidney disease in wild fish populations

机译：野生鱼群中2016年黄石河鱼杀死和增殖性肾病的探索

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Proliferative kidney disease (PKD) is an emerging disease that recently resulted in a large mortality event of salmonids in the Yellowstone River (Montana, USA). Total PKD fish mortalities in the Yellowstone River were estimated in the tens of thousands, which resulted in a multi‐week river closure and an estimated economic loss of US$500,000. This event shocked scientists, managers, and the public, as this was the first occurrence of the disease in the Yellowstone River, the only reported occurrence of the disease in Montana in the past 25?yr, and arguably the largest wild PKD fish kill in the world. To understand why the Yellowstone River fish kill occurred, we used molecular and historical data to evaluate evidence for several hypotheses: Was the causative parasiteTetracapsuloides bryosalmonae a novel invader, was the fish kill associated with a unique parasite strain, and/or was the outbreak caused by unprecedented environmental conditions? We found thatT.?bryosalmonae is widely distributed in Montana and have documented occurrence of this parasite in archived fish collected in the Yellowstone River prior to the fish kill.T.?bryosalmonae had minimal phylogeographic population structure, as the DNA of parasites sampled from the Yellowstone River and distant water bodies were very similar. These results suggest thatT.?bryosalmonae could be endemic in Montana. Due to data limitations, we could not reject the hypothesis that the fish kill was caused by a novel and more virulent genetic strain of the parasite. Finally, we found that single‐year environmental conditions are insufficient to explain the cause of the 2016 Yellowstone River PKD outbreak. Other regional rivers where we documentedT.?bryosalmonae had similar or even more extreme conditions than the Yellowstone River and similar or more extreme conditions have occurred in the Yellowstone River in the recent past, yet mass PKD mortalities have not been documented in either instance. We conclude by placing these results and unresolved hypotheses into the broader context of international research onT.?bryosalmonae and PKD, which strongly suggests that a better understanding of bryozoans, the primary host ofT.?bryosalmonae , is required for better ecosystem understanding.
机译：增殖性肾脏疾病（PKD）是一种新兴疾病，最近导致黄石河（美国蒙大拿州）鲑鱼的大死亡率。黄石河中的PKD鱼类总体估计在成千上万的数千人中估计，导致多周的河流关闭，估计经济损失为500,000美元。这一事件震惊了科学家，经理和公众，因为这是黄石河疾病的第一次出现，唯一报告的蒙大拿疾病在过去的25？YR，并且可以说是最大的野生PKD鱼杀死世界。要了解为什么黄石河鱼杀死发生了，我们使用分子和历史数据来评估几个假设的证据：是致病性寄生虫，是一种新的侵略者，是一种与独特的寄生虫菌株相关的鱼类，和/或是前所未有的环境条件造成的爆发吗？我们发现 t.?bryosalmonae广泛分布在蒙大拿州，并在鱼杀死前在黄石河收集的存档鱼中记录了这种寄生虫。 t.?bryosalmonae具有最小的神奇人口结构，如从黄石河和遥远的水体取样的寄生虫的DNA非常相似。这些结果表明 T.?bryosalmonaae可能在蒙大拿州的地方。由于数据限制，我们无法拒绝鱼杀血液造成的寄生虫的遗传毒株引起的假设。最后，我们发现单年的环境条件不足以解释2016年黄石河PKD爆发的原因。我们记录的其他区域河流 t.?bryosalmonae的情况比黄石河流相似甚至更极端的条件，在最近的黄石河上发生了类似或更极端的条件，但尚未记录大众PKD死亡率无论如何。我们通过将这些结果和未解决的假设纳入更广泛的国际研究的更广泛的背景下，我们强烈表明对盐结核的更好理解，是 T.?bryosalmonae的主要宿主，是更好的生态系统理解所需。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号