奈良県猿谷ダム湖の魚類-I : 生息状態のあらまし

概要

論文の詳細を見る
The catches of flshes in number by the gill net in the Sarutani Reservoir which was filled in 1956,and the population densities of the fishes in its tributary, the Tenno-kawa River, were investigated in 1961 and 1962. The following results were obtained. 1) The remarkable inarease in catches of two species of stagnant waters, Biwia zezera and Pseudoxasbora parva and of two species, Zacco platypus and Rhinogobius brunneus, which require a wide water body in their larval stages, and the decrease of Tribolodon hakonensis in 1962 were observed (Tables 2 and 3 ; Fig. 2). These indicated that the composition in number of fish fauna in the reservoir changed considerably to that of the stagnant water type from that of running water type which is seen in the tributary at present. 2) This change seen in the reservoir has markedly affected the abundance of Z. platypus and T. hakonensis near the backwater in the tributary as shown in Table 1. 3) Tukugobius flumineus, which is very abundant in the tributary, has not been collected in the reservoin. It seems to be difficult for them to inhabit there.
日本生態学会の論文
1964-02-01