Conservation Ecology of an Aquatic Insects in the Headwaters, based on its biodiversity.

在源头溪流中，有一种所谓的渗流带或湿润生境，它由流经岩面的薄片水组成。一般来说，在渗漏区，许多居民都是专业性很强的栖息地。在日本和东亚的河流中，我们可以看到许多特有的水生昆虫物种，如斑潜蝇属、双翅目昆虫属、长翅目和毛翅目的物种。由于分布的局限性，这些物种的扩散能力可能非常有限。在本研究中，我们以生活在湿地生境中的物种为重点，以积累关于分布、生境偏好、生活史和基因多样性的信息，建立一个基本的保护数据。特有的双翅目昆虫、牙叶蝉属和黄翅目昆虫可能具有非常有限的传播能力都是受限制的源头。IT…较详细地讨论了S的生态关系和遗传变异，并与其他水系中的其他种类进行了比较。双翅目拟小蜂的种群间遗传距离大于所研究的其他种类。对一种大型地方性七星小蜂的分布、栖息地选择、生活史、婚礼行为等基本生态信息进行了描述。本文介绍了东亚地区特有的一种石斑潜蝇，隶属于该科唯一的一属8种。在种间水平上，从线粒体DNA推断的四种海龙之间的遗传关系并不是很清楚，尽管物种水平上的单调性得到了有力的支持，种群水平上的关系也得到了很好的支持。造成这两个结果分歧的原因被认为是，吸虫的物种形成发生在很短的时间内。较少

In headwater stream, there is a microhabitat so-called seepage zone, madicolous or hygropetric habitat, which consists of thin sheets of water flowing over rock faces. Generally, in the seepage zone, many of inhabitants are specialized with quite unique habitat. In Japan or East Asia stream, we can see many endemic aquatic insects species in the madicolous habitats, such as species of Ephemeroptera (e.g. genus Bleptus, genus Dipteromimus), Plecoptera(e.g. family Scopuridae) and Trichoptera(e.g. Rhyacophilidae).Because of its restricted distribution, madicolous habitat snecies are often listed as an endanwarad species.In this stuay, we focused on the species, which lives in hygropetric habitat, to accumulate information about distribution, habitat preference, life history and gene diversity and made up a basic conservation data.The endemic dipteromimid mayflies, Dipteromimus tipuliformis and D.flavipterus, which have possibly very limited dispersal ability, are restricted headwaters. It … More s ecological relationship and genetic variation were discussed and compared with some other mayfly species living in other water systems. Dipteromimid mayflies showed greater interpopulation genetic distances than those of other of mayfly species examined.On a large endemic heptageniid mayfly Bleptus fasciatus (Ephemeroptera ; Heptageniidae), basic ecological information about distribution, habitat preference, life cycle, nuptial behavior are described. The scopurids stoneftis (Plecoptera) are endemic to East Asia.There are eight species belonging to the sole genus Scopura of the family.Distribution, ecology of scopurids stonetly are described. The genetic relationship between four scopurids inferred from mitochondrial DNA are not so clear at the inter-specific level, although the monophyly between the species level has been strongly upheld, and population level relationship have also been well supported. The reason for the split in two results is considered to be, that the speciation of scopurids occurred within a short period. Less