Ecological studies on the conservation of endangered insect species in the Satoyama, the traditional rural landscape in Japan

对近基地区稻田水系中巨型水虫等濒危水生昆虫的种群动态进行了实地调查。本文还对日本稻田边缘植被新记录的小胡蜂（Apanteles javensis）的生活史进行了实地调查，并对大阪和歌山县的寄主昆虫、栖息地、生命周期等进行了描述。我们在大阪府北部的一片树林里对蝴蝶和飞蛾进行了调查。为了阐明刈割对蝴蝶物种多样性和群落结构的影响，我们还对林下蝴蝶进行了样带计数。此外，我们在大阪府北部的传统乡村景观中，对农场和森林景观中的蝴蝶进行了样带计数。结果表明：中山的植物种类丰富，有单一种类、中日成分种类、日本特有种类，而依赖于不同植被阶段的植物种类较多。结果表明，中山地区不同阶段植被的镶嵌结构对蝴蝶物种多样性的保护具有重要意义。据报道，濒危凤蝶花（Luehdorfia japonica）藤川种群和新泻种群的成虫已被引进神奈川县石崎山，本文将这两个外来种群的幼虫在当地种群的食物植物日本细丝（Asarum nipponicum）上饲养，以评估它们对当地种群的可能影响。结果表明，这两个外来种群都能够利用日本金银花，从而与本土种群竞争幼虫食性植物。特别是新泻种群的幼虫发育速度较快，可能对坦泽种群构成威胁。我们还通过检查本研究在野外收集的资料以及大阪府立大学、北海道大学、伦敦自然历史博物馆等收藏的资料，对已知在中山各种树木和灌木的叶子中挖掘其幼虫的Heliozelidae科进行了系统的修订。在大阪国际机场内对濒临灭绝的lycaenid， Zizina otis进行了实地调查，并对植被进行了覆盖。结果表明：在棒球场和跑道附近的短草地上，成虫密度较高；少

We made field investigations on the population dynamics of endangered aquatic insects including the giant water bug, Lethocerus deyrollei, in the water system of rice paddies in the Kinki district. We also made field surveys on the life history of the braconid wasp, Apanteles javensis, newly recorded from border vegetation of paddies in Japan, and described the host insects, habitat, lifecycle and so on in Osaka and Wakayama Prefectures.We made inventories of butterflies and moths in a coppice in northern Osaka Prefecture. We also conducted transect counts of butterflies in the coppice to elucidate effects of undergrowth mowing on species diversity and assemblage structure of butterflies. Moreover, we made the transect count of butterflies in farm and coppice landscapes in one of the Satoyama, the traditional rural landscape of Japan, in northern Osaka Prefecture. The results showed the abundance of univoltine species, species of the Sino-Japanese components, those endemic to Japan, an … More d those depending on plants from wide range of seral stages of vegetation in Satoyama. The results show that the mosaic structure of vegetation in terms of the seral stage is important for conservation of species diversities of butterflies in Satoyama.As it was reported that adults of the Fujigawa and Niigata populations of the endangered papilionid, Luehdorfia japonica, had been introduced to Mt.Ishizare-yama, Kanagawa Prefecture, larvae of the two exotic populations were reared on the food plant of native population, Asarum nipponicum (Aristolochiaceae), to assess their possible impacts on the native population. The results show that both the exotic populations are able to use A.nipponicum so that they compete for the larval food plant with the native population. In particular the Niigata population may threaten the Tanzawa population by the higher larval development. We also made a systematic revision of the family Heliozelidae, whose larvae are known to mine in a leaf of various trees and shrubs in Satoyama, by examining materials collected in the field for this study and those preserved in the collections of Osaka Prefecture University, Hokkaido University, the Natural History Museum of London and so on.A field survey of the endangered lycaenid, Zizina otis, and coverage of vegetation were made inside the Osaka International Airport. Results show that density of adults was high in short grasslands at a baseball ground and along a runway. Less