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首页> 外文期刊>Journal of Parasitology >HOST AGE, BUT NOT HOST LOCATION WITHIN A STREAM, IS CORRELATED WITH THE PREVALENCE OF GUT PARASITES IN WATER STRIDERS
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HOST AGE, BUT NOT HOST LOCATION WITHIN A STREAM, IS CORRELATED WITH THE PREVALENCE OF GUT PARASITES IN WATER STRIDERS

机译：寄主年龄，而不是寄宿在流水线内，与水PA中肠道寄生虫的患病率相关

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摘要

We tested for correlations between the geographic, demographic, and temporal distribution of an aquatic insect host and the prevalence of its gut parasites in southwestern Ohio. Trypanosomatids were present in Aquarius remigis collected from all 4 streams surveyed in the watershed. Prevalence declined dramatically from May to July and remained low through the fall. This pattern was consistent over all sites of our study, with no effect of stream, stream site (upstream vs. downstream), or host sex on prevalence. Stage, however, was strongly correlated with prevalence; adults were more likely to be infected than were nymphs. We argue that behavioral differences between the 2 age classes may account for the decline in prevalence; opportunities for transmission are highest in the spring, when mating activities increase adult host contact rates, and decline in the summer, when contact rates decrease.
机译：我们测试了水生昆虫寄主的地理，人口统计和时间分布与其在俄亥俄州西南部的肠道寄生虫患病率之间的相关性。从流域调查的所有4条溪流中收集的水瓶座鱼类中都存在锥虫。从5月到7月，患病率急剧下降，并在整个秋季一直保持较低水平。在我们研究的所有部位，这种模式都是一致的，溪流，溪流部位（上游与下游）或宿主性别对患病率没有影响。但是，阶段与患病率密切相关。成人比若虫更容易被感染。我们认为两个年龄段之间的行为差​​异可能是导致患病率下降的原因。在春季，当交配活动增加成年寄主的接触率时，传播的机会最高；而在夏季，当接触率降低时，传播的机会下降。

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