河川伏流域における水生昆虫生息状態の一例
1981 年 42 巻 1 号 p. 40-45
詳細
1981 年 42 巻 1 号 p. 40-45
There have been a few papers concerned with the effect of temporal drought on the life of aquatic insects. In November of 1976, I had an opportunity to investigate an example of insect distribution at dried out and water-flowing areas up a sand arrestation dam of a stream near Kyoto. No individuals of Epeorus sp. were collected alive in the dried-out area. A few individuals of Baetis sp., Ecdyonurus kibunensis, Nogiperla sp., Ephemerella sp. and Paraleptophlebia sp. PA were collected alive in the dried-out area but only in sand and gravel zones; these species were collected mainly on stone surfaces in the water-flowing area. Elmidae and Nemouridae were found alive too, mainly in sand gravel zones. Ephemera japonica, Perla sp., Alloperla sp., Dinarthrodes sp., Chironomidae, Hydropsyche tsudai and Antocha sp. were collected in as many dried-out areas as in water-flowing areas.
