成長期および産卵期における人工種苗アユの選好流速

DOI 日本農学文献記事索引 Web Site 参考文献32件

書誌事項

タイトル別名
  • Water Velocity Preference of Artificially Hatched Ayu, Plecoglossus altivelis altivelis in Growing and Spawning Season
  • セイチョウキ オヨビ サンランキ ニ オケル ジンコウ シュビョウ アユ ノ センコウ リュウソク

この論文をさがす

抄録

Water velocity preference of ayu Plecoglossus altiveris altivelis was studied using a stream tank. Ayu preferred the velocity of 43.4 ± 9.2 cm/s (mean ± SD) at growing season in summer and 33.2 ± 9.5 cm/s at just before spawning season in fall. The former velocity approximates to the water velocities measured at grazing scar of ayu on cobble (41.9 ± 14.5 cm/s) in growing season and the latter velocity at spawning bed of ayu (26.7 ± 9.1 cm/s), respectively.<BR>These results indicate that ayu prefer the water velocity of rapid riffle in growing season, and prefer that of flat riffle mainly in autumn. And this down of preferred velocity and habitat change occur for spawning success.

収録刊行物

  • 水産増殖

    水産増殖 54 (4), 421-427, 2006

    日本水産増殖学会

参考文献 (32)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ