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

在源流中，有一个微生境，即所谓的渗漏带，即含水或湿性生境，它由流过岩石表面的薄层水组成。一般来说，在渗流区内，许多居民都是专业化的，有相当独特的栖息地。在日本或东亚河流中，我们可以看到许多特有的水生昆虫物种，如蜉蝣目（如Bleptus属，Dipteromimus属），Plecoptera（如Bleptus属，Dipteromimus属）。和毛翅目(如：Rhyacophilidae)。由于分布范围的限制，原色生境植物常被列为濒危物种。本研究以湿性生境为研究对象，积累其分布、生境偏好、生活史和基因多样性等方面的信息，为保护提供基础资料。地方性的双翅螨、多角双翅螨和黄翅田鼠是受限制的水源，它们的传播能力可能非常有限。并与生活在其他水系的其他种类蜉蝣的生态关系和遗传变异进行了讨论和比较。双虫蛉的种群间遗传距离比其他种类的大。本文描述了一种大型七蝇科特有种虻（蜉蝣目；七蝇科）的分布、生境偏好、生活期、交配行为等基本生态信息。石翅甲是东亚特有的一种昆虫。有8种属于该科唯一的Scopura属。描述了石榴树的分布、生态。从线粒体DNA推断出的四种scopurids在种间水平上的亲缘关系尚不明确，但在种间水平上的单系关系得到了强有力的支持，种群水平上的亲缘关系也得到了很好的支持。两个结果的分裂的原因被认为是scopurids的形成发生在很短的时间内。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