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首页> 外文期刊>Proceedings of the Arkansas Academy of Science >Dytiscidae (Coleoptera) of Jackson County, Arkansas
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Dytiscidae (Coleoptera) of Jackson County, Arkansas

机译：阿肯色州杰克逊县的蝇科（鞘翅目）

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摘要

Dytiscid beetles were surveyed to establish a baseline list for this county, which lies primarily in the Mississippi Alluvial Plain. This list was then compared with that for an Ozark county, which had been surveyed in a previous study. Eighteen sites were surveyed by Turtox Indestructible™ dip net and funnel traps. Museum holdings and literature records were also searched. Twenty-one taxa were collected, with temporary ponds and oxbow/cypress swamps supporting the greatest diversity. These are the least disturbed sites in Jackson County. Most species collected are generally widely distributed and prefer either shaded ponds/pools with some leaf litter, or shallow areas of ponds, lakes and slow streams. To the contrary, Randolph County, on the Ozark Plateau, has more taxa (31), with many typifying Ozark streams. More specifically, Hydroporus was represented by seven species in Jackson County, but 13 species were found in Randolph County. The difference was the presence in Randolph County of the subgenus Heterosternuta, found invariably along the gravelly margins of clear streams.
机译：调查了不完整的甲虫，以建立该县的基线清单，该县主要位于密西西比河冲积平原。然后，将该列表与先前研究中调查过的奥扎克县的列表进行了比较。 Turtox Indestructible™浸入网和漏斗收集器对18个地点进行了调查。博物馆的馆藏和文献记录也进行了搜索。收集了二十一个分类单元，其中临时池塘和牛b /柏树沼泽支持最大的多样性。这些是杰克逊县受干扰最少的地点。收集的大多数物种通常分布广泛，并且更喜欢带有一些树叶凋落物的阴暗池塘/池塘，或者池塘，湖泊和慢流的浅水区。相反，位于欧扎克高原的伦道夫县拥有更多的分类单元（31），其中有许多典型的欧扎克溪流。更具体地说，在杰克逊县，水por由7种组成，但在伦道夫县却发现了13种。区别在于在伦道夫县存在杂种亚种，总是沿着清澈的河流的砾石边缘发现。

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