...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Parasitology >Unpredicted transmission strategy of Gyrodactylus salaris (Monogenea: Gyrodactylidae): survival and infectivity of parasites on dead hosts.
【24h】

Unpredicted transmission strategy of Gyrodactylus salaris (Monogenea: Gyrodactylidae): survival and infectivity of parasites on dead hosts.

机译：Salarys（monogenea：Gyrodactylidae）的意外传播策略：死寄主上寄生虫的存活和传染性。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The viviparous monogenean Gyrodactylus salaris continues to devastate Norwegian Atlantic salmon populations despite the extreme measures taken to control this pathogen. Increased understanding of parasite biology is needed to develop alternative control and management strategies of wild Atlantic salmon. We have examined temperature-dependent survival of G. salaris, both on and off the host. At 18 degrees C, survival off the host was 1 day, but at 3 degrees C parasites survived for 4 days. However, in contrast to assumptions made by earlier authors, many parasites remained with their host following its death. Ultrastructural evidence indicated that G. salaris individuals can feed on a dead host, and laboratory tests demonstrated that worms on their hosts more than double their life-span compared with individuals maintained off the host. Experimental infections also demonstrated that establishment and subsequent population growth of parasites previously maintained on dead hosts for 3 days, was similar tothat of parasites transferred directly between living hosts. Hence, for G. salaris, dead infected hosts may increase the chances of successful transmission and be a potential important infection source in rivers and hatcheries.
机译：尽管采取了极端措施来控制这种病原体，但单胎单生回旋线虫仍继续破坏挪威大西洋鲑的种群。为了开发野生大西洋鲑鱼的替代控制和管理策略，需要对寄生虫生物学有更多的了解。我们已经研究了在宿主体内和宿主外G. salaris的温度依赖性存活。在18摄氏度时，宿主的存活时间为1天，但在3摄氏度时，寄生虫存活了4天。但是，与早期作者的假设相反，寄主死后，许多寄生虫仍留在寄主身上。超微结构的证据表明，G。salaris个体可以以死的宿主为食，实验室测试表明，与宿主以外的个体相比，宿主上的蠕虫的寿命是其两倍以上。实验性感染还表明，先前在死宿主上维持3天的寄生虫的建立及其随后的种群增长与直接在活宿主之间转移的寄生虫相似。因此，对于沙门氏菌，死亡的感染宿主可能增加成功传播的机会，并可能成为河流和孵化场的潜在重要感染源。

著录项

相似文献

  • 外文文献
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