富山県における淡水棲アメンボ類の分布と生息場所

概要

論文の詳細を見る
A survey was made of the distribution and habitats of water striders at various ponds in Toyama prefecture, Japan. Six species were recorded, Gerris elongatus, G. paludum japonicus, G. gracilicornis, G. yezoensis, G. insularis and G. latiabdominis. G. yezoensis was distributed from the upper mountain zone up to the alpine zone, whereas the other species were found from the coastal zone up to the mountain zone. G. elongatus and G. paludum japonicus live mainly on wide and sunlit areas of water, G. gracilicornis and G. insularis on narrow areas and G. latiabdominis on sunlit areas. Within the area of a pond, water striders were found to distribute from the shore to the center in order of body size, smaller to larger, respectively. Thus, each species utilizes a different part of the pond surface ; a spacing mechanism which enables several species to coexist in a pond.
日本生態学会の論文
1988-04-30