期刊
DISEASES OF AQUATIC ORGANISMS
卷 99, 期 2, 页码 139-144出版社
INTER-RESEARCH
DOI: 10.3354/dao02458
关键词
Ichthyophonus; Pacific herring; Horizontal transmission; Parasite
资金
- North Pacific Research Board [1015]
- Exxon Valdez Oil Spill Trustee Council [10100132-I]
- US Geological Survey Fisheries and Aquatic Resources Program
The parasite Ichthyophonus is enzootic in many marine fish populations of the northern Atlantic and Pacific Oceans. Forage fishes are a likely source of infection for higher trophic level predators; however, the processes that maintain Ichthyophonus in forage fish populations (primarily clupeids) are not well understood. Lack of an identified intermediate host has led to the convenient hypothesis that the parasite can be maintained within populations of schooling fishes by waterborne fish-to-fish transmission. To test this hypothesis we established Ichthyophonus infections in Age-1 and young-of-the-year (YOY) Pacific herring Clupea pallasii (Valenciennes) via intraperitoneal (IP) injection and cohabitated these donors with naive conspecifics (sentinels) in the laboratory. IP injections established infection in 75 to 84% of donor herring, and this exposure led to clinical disease and mortality in the YOY cohort. However, after cohabitation for 113 d no infections were detected in naive sentinels. These data do not preclude the possibility of fish-to- fish transmission, but they do suggest that other transmission processes are necessary to maintain Ichthyophonus in wild Pacific herring populations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据