• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Comparative parasitology >Parasites and Diet of Trout-Perch (Percopsis omiscomaycus) from Northwest Territories, Canada, with Comments on the Range of Crepidostomum percopsisi Nelson, Choudhury and Dick 1997
【24h】

Parasites and Diet of Trout-Perch (Percopsis omiscomaycus) from Northwest Territories, Canada, with Comments on the Range of Crepidostomum percopsisi Nelson, Choudhury and Dick 1997

机译：来自加拿大西北地区的鳟鱼栖息地的寄生虫和饮食（Percopsis omiscomaycus），并评论了Crepidostomum percopsisi范围Nelson，Choudhury和Dick，1997年

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 trout-perch, Percopsis omiscomaycus (Walbaum), is a widely distributed species in North America. Despite several compound community surveys, the northernmost survey of trout-perch parasites is from southern Manitoba, Canada. A total of 42 parasite species have been reported from trout-perch, with 2 species being strictly host specific. During limnological surveys of Sid and Blitzen lakes, Northwest Territories, Canada, 4 parasite taxa were recovered from trout-perch: Protozoan cysts, Diplostomum sp., Proteocephalus sp., and Crepidostomum percopsisi. The present study area is approximately 1,547 km northwest of Dauphin Lake, which is the northernmost documented range for C. percopsisi. These data provide further support for Halvorsen's "constant fauna" as a general rule for north temperate fish parasite communities. Comparisons with other trout-perch surveys from more southern portions of the biogeographic range suggest that parasite composition, at least in small, nutrient- and species-poor lakes at northern latitudes have decreased richness, despite trout-perch having a diverse diet compared with more southern surveys. The intermediate host of C. percopsisi is unknown. Other Crepidostomum spp. are transmitted through Ephemerop-tera, which occur in the diet of the trout-perch from Blitzen and Sid lakes. However, the high prevalence of cladocerans in this study, similar to other published reports, might implicate cladocerans as a potential intermediate host for C. percopsisi.
机译：鳟鱼鲈鱼，Percopsis omiscomaycus（Walbaum），在北美是分布广泛的物种。尽管进行了几次社区综合调查，但鳟鱼栖息地寄生虫最北端的调查来自加拿大曼尼托巴南部。鳟鱼鲈共报告了42种寄生虫物种，其中2种是严格针对宿主的。在加拿大西北地区Sid和Blitzen湖的湖泊学调查中，从鳟鱼鲈鱼中回收了4种寄生虫类群：原生动物囊肿，双孢菌属，Proteocephalus sp。和Crepidostomum percopsisi。本研究区域位于Dauphin湖西北约1,547公里，这是Percopsisi记录的最北范围。这些数据进一步支持了Halvorsen的“恒定动物​​区系”，将其作为北部温带鱼类寄生虫群落的一般规则。与其他来自生物地理范围较南部地区的鳟鱼鲈鱼调查的比较表明，尽管鳟鱼鲈鱼饮食结构多样，至少在北部纬度的小型，营养贫乏和物种贫乏的湖泊中，寄生虫的成分已降低了丰富度。南方调查。 Percopsisi的中间宿主是未知的。其他Crepidostomum spp。是通过麻黄传播的，麻黄是从布里岑和西德湖的鳟鱼鲈的饮食中产生的。然而，与其他已发表的报道相似，本研究中锁骨的高发率可能暗示了锁骨是潜在的角膜梭菌的中间宿主。

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