@article{oai:kyutech.repo.nii.ac.jp:00005689, author = {Onitsuka, Kouki and 鬼束, 幸樹 and Akiyama, Juichiro and 秋山, 壽一郎 and 武田, 知秀 and 泉, 孝佑 and 内間, 志和 and 窄, 友哉}, issue = {4}, journal = {土木学会論文集. B1, 水工学}, month = {}, note = {近年,ウナギの産卵場が解明され,ウナギの生態に関する研究は進んでいるが,河川におけるウナギの遡上特性についてはほとんど解明されていない.特に,遊泳力の弱いウナギの仔魚や稚魚を対象としたウナギ用魚道の検討が必要とされている.本研究では,ウナギ用魚道内の突起物の直径と単位幅流量を系統的に変化させて,ウナギ未成魚の遡上特性に及ぼす影響について検討した.その結果,いずれの突起物の直径においても単位幅流量の増加に伴って,遡上率が増加傾向を示すことが判明した.また,単位幅流量および突起物の直径の増加に伴い,ウナギの蛇行度は増加し,ウナギの平均遡上速度が減少することが明らかになった. Studies on biology and environment of eels Anguilla japonica have been advanced in recent years. However, little is known about fish ladder for eels and migrating characteristics of eels. Especially, spe-cial fishways are necessary for demersal fish like young eels. This study was made to evaluate effects on migration rate of eels under the condition that diameter of protrusions and discharge per unit width in fish ladder are changed. It was found that migration rate increases with an increase of discharge per unit width in each of diameter of protrusions. Besides, sinuosity of eels are increasing, and averaged migrating speed is decreasing with an increase of discharge per unit width and diameter of protrsions., 水工学論文集第62巻}, pages = {I_403--I_408}, title = {ウナギ用魚道内の突起物の直径と単位幅流量がウナギの遡上特性に及ぼす影響}, volume = {74}, year = {2018}, yomi = {オニツカ, コウキ and アキヤマ, ジュイチロウ} }