HOST PARASITE RELATIONSHIPS IN BEAR LAKE FISH AND INVERTEBRTES--UTAH AND IDAHO

熊湖鱼类和无脊椎动物中的宿主寄生虫关系——犹他州和爱达荷州

• 批准号: 6240565
• 负责人: CHERYL C HOGUE
• 金额: $ 6.16万
• 依托单位: CALIFORNIA STATE UNIVERSITY NORTHRIDGE
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6240565
• 关键词: Nematoda; animal population density; animal population study; fish; food chain; fresh water environment; gastrointestinal system; host organism interaction; parasitism

Bear Lake, one of the few natural lakes in Utah, possesses two interesting features: at least four endemic fish species live here, and many of the fishes in the lake use benthic invertegrates as a primary food source. Because of these features, Bear Lake provides an opportunity where relationships between parasites and their hosts can be studies in a community with a history of isolation and minimal external influences. Specific questions addressed in this study are: 1) Are fish helminth communities in Bear Lake stochastic, depauperate, and non-interactive or are they structured assemblages and interactive? And 2) Does the oligotrophic status of Bear Lake result in a parasite food web that is dominated by autogenic parasite species (species which use fish in the lake as both an intermediate and definitive host)? Parameters to quantify structure of helminth assemblages in Bear Lake fish include: prevalence, a diversity index, a dominance index, both qualitative and quantitative similarity indices, and site location of gastrointestinal helminths. A food web for Bear Lake parasites will be developed incorporating the interactions between fish definitive hosts, fish/benthic invertebrate intermediate hosts, and parasite infra- and component communities. Minority students involved in this project will study a natural host-parasite system. They will become knowledgeable and skillful in parasite ecology and learn fundamental aspects of interactions between parasites and their hosts that are applicable to most host- parasite systems including human host-parasite systems. Exposure to parasite ecological concepts will be especially useful to students that enter a biomedical field that involves studying the epidemiology of parasitic diseases of humans.

熊湖是犹他州为数不多的天然湖泊之一， 有趣的特征：至少有四种特有鱼类生活在这里， 湖中的许多鱼类以底栖无脊椎动物为主要食物来源， 食物来源由于这些特点，熊湖提供了一个 寄生虫和宿主之间的关系 在一个有着与世隔绝历史的社区中进行研究， 外部影响。 本研究所涉及的具体问题是：1） 熊湖的鱼类蠕虫群落是随机的，不稳定的， 是非交互式的，还是结构化的组合和交互式的？和 2)熊湖的贫营养状态会导致寄生虫食物吗 网是由自生寄生虫物种占主导地位（物种使用 鱼在湖中作为一个中间和最终宿主）？参数 量化熊湖鱼类蠕虫组合结构的方法包括： 流行率，多样性指数，优势指数，质量和 定量相似性指数和胃肠道的位置 蠕虫一个熊湖寄生虫的食物网将被开发出来 结合鱼类最终宿主、鱼类/底栖生物之间的相互作用 无脊椎动物中间宿主和寄生虫的基础和组成部分 社区. 参与该项目的少数民族学生将学习 自然宿主-寄生物系统 他们将变得知识渊博， 精通寄生虫生态学，了解相互作用的基本方面 适用于大多数宿主的寄生虫和宿主之间的关系， 寄生虫系统，包括人类宿主-寄生虫系统。 暴露于 寄生虫生态学的概念将是特别有用的学生， 进入生物医学领域，包括研究流行病学， 人类的寄生虫病