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

我们对近畿地区稻田水系中包括大水蝽在内的濒危水生昆虫的种群动态进行了实地调查。对日本稻田边缘植被中新记录的黄绒茧蜂Apanteles javensis的生活史进行了野外调查，描述了大坂府和和歌山府的寄主昆虫、生境、生活史等，并对大坂府北方的一个矮林中的蝴蝶和蛾类进行了调查。此外，我们还进行了样带计数的蝴蝶在矮林下割草的物种多样性和集群结构的蝴蝶阐明的影响。此外，我们在北方大坂府的里山，日本的传统农村景观之一，农场和矮林景观的蝴蝶样带计数。结果表明，该地区有丰富的一化性种、中日成分种、日本特有种和日本特有种， ...更多信息 d那些依赖于植物从广泛的系列阶段的植被在里山。研究结果表明，植被演替阶段的镶嵌结构对里山蝶类物种多样性的保护具有重要意义。据报道，濒危凤蝶Luehdorfia japonica的Fujigawa和新泻种群的成虫已被引入神奈川县石重山，这两个外来种群的幼虫在本地种群的食用植物上饲养，细辛（马兜铃科），以评估其对当地人口的可能影响。结果表明，两个外来种群都能利用穿龙线虫，与本地种群争夺幼虫的食物植物。特别是新泻种群可能会威胁到丹泽种群较高的幼虫发育。通过对野外采集的标本和大坂府立大学、北海道大学、伦敦自然历史博物馆等的标本的分析，对以寄生于里山地区各种树木和灌木叶片上的幼虫为主的实蝇科进行了系统的订正。在大坂国际机场内进行了植被覆盖。结果表明，棒球场和跑道沿着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