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首页> 外文期刊>Journal of Parasitology >GEOGRAPHIC ANALYSIS OF HOST USE, DEVELOPMENT, AND HABITAT USE OF AN ACANTHOCEPHALAN SPECIES, LEPTORHYNCHOIDES THECATUS
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GEOGRAPHIC ANALYSIS OF HOST USE, DEVELOPMENT, AND HABITAT USE OF AN ACANTHOCEPHALAN SPECIES, LEPTORHYNCHOIDES THECATUS

机译：棘皮动物物种，钩丝虫纲的寄主使用，发育和生境使用的地理分析

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摘要

Leptorhynchoides thecatus (Linton, 1891), an acanthocephalan parasite of freshwater fishes, varies in host use, development, and habitat use throughout North America. Spatial structure of these characteristics was examined from data extracted from the literature. Geographic patterns were inferred from point comparisons using correllograms and then tested with Moran's I statistic for global and local significance, and visually from regional means within major river drainages. Species of Micropterus Lacepède, 1802 (black basses) were common hosts in most regions, except the Lower Mississippi and South Atlantic regions where species of Lepomis Rafinesque, 1819 (sunfishes) were common hosts. Development, described as the proportions of adults relative to cystacanths (extraintestinal juveniles), decreased with latitude. Habitat use of L. thecatus showed marked geographic patterns. Leptorhynchoides thecatus occurred in the intestine of sunfishes in the South Atlantic and Lower Mississippi regions, in the ceca in fish of all species included in the study in the Missouri and Texas-Gulf regions, and both in ceca and intestines in fish of all species in northern regions. Leptorhynchoides thecatus showed geographic patterning within the variable traits across the range of the species. These patterns may be the result of ecological factors or of genetic differences that might indicate L. thecatus comprises multiple cryptic species.
机译：Leptorhynchoides thecatus（林顿，1891年）是淡水鱼类的棘头动物寄生虫，在整个北美，寄主的使用，发育和栖息地的使用都有所不同。从文献中提取的数据检查了这些特征的空间结构。地理图案是通过使用坐标图从点比较中推断出来的，然后使用Moran's I统计量进行全局和局部意义检验，并通过主要河流排水区域的区域平均值进行可视化检验。除下密西西比州和南大西洋地区（1819年的Lepomis Rafinesque物种（翻车鱼）是常见寄主）以外，大多数地区的MicropterusLacepède（1802年）物种（黑鲈）是常见寄主。发育被描述为成年人相对于半胱氨酸（extesttestinal少年）的比例，随着纬度的降低而降低。栖息地对L. thecatus的使用显示出明显的地理格局。 Leptorhynchoides thecatus发生在南大西洋和密西西比河下游地区的翻车鱼肠中，在密苏里州和德克萨斯湾地区的所有物种的盲肠中都出现了盲肠，在密苏里州和德克萨斯州的所有物种的鱼中都出现了盲肠和肠道中的盲肠。北部地区。 Leptorhynchoides thecatus在整个物种范围内的可变性状内显示出地理格局。这些模式可能是生态因素或遗传差异的结果，这些遗传差异可能表明镰刀菌包含多种隐性物种。

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