...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oecologia >Epidemiology of a Daphnia brood parasite and its implications on host life-history traits
【24h】

Epidemiology of a Daphnia brood parasite and its implications on host life-history traits

机译：水蚤群寄生虫的流行病学及其对宿主生活史特征的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

Parasites influence host life-history traits and therefore might crucially shape host populations in natural systems. In a series of laboratory experiments, we studied the impact of an oomycete brood parasite on its Daphnia (waterflea) host. We asked whether Daphnia dump the infected brood and subsequently are able to reproduce again as was occasionally observed in a preliminary study. No viable offspring developed from infected clutches, but 78% of the infected females produced healthy offspring after releasing the infected brood while molting. Neither those offsprings' development success nor their mothers' reproductive potential was affected by the brood parasite. However, infected Daphnia had a reduced life-span and suffered an increased susceptibility to another parasite, an unidentified bacterium. Additionally, we studied the prevalence of this brood parasite and the unidentified bacterium in a natural Daphnia assemblage in a pre-alpine lake, across changing demographic and environmental conditions. The brood parasite epidemic seemed to be host-density dependent. Our results show that the brood parasite's impact on the host population is enhanced when combined with the unidentified bacterium.
机译：寄生虫会影响宿主的生活史特征，因此可能会严重影响自然系统中的宿主种群。在一系列实验室实验中，我们研究了卵菌卵寄生虫对其蚤（水蚤）宿主的影响。我们问Daphnia是否抛弃了受感染的幼体，随后是否能够再次繁殖（如在初步研究中偶尔观察到的那样）。受感染的离合器没有后代生长，但是78％的被感染雌性在蜕皮时释放出受感染的亲体后产生了健康的后代。这些后代的发育成功和母亲的繁殖潜力都不受寄生虫的影响。但是，被感染的水蚤寿命缩短，对另一种寄生虫（一种未知细菌）的敏感性增加。此外，我们在人口变化和环境变化的情况下，研究了该高山寄生虫和未鉴定细菌在前高山湖泊中天然水蚤组合中的患病率。巢中的寄生虫流行似乎与宿主密度有关。我们的结果表明，当与未知细菌结合使用时，繁殖寄生虫对宿主种群的影响会增强。

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