筑後川水系小石原川におけるアカザの卵と初期発育

DOI 日本農学文献記事索引 Web Site 参考文献39件
  • 中谷 祐也
    九州大学大学院生物資源環境科学府附属水産実験所
  • 乾 隆帝
    九州大学大学院生物資源環境科学府附属水産実験所
  • 川岸 基能
    九州大学大学院生物資源環境科学府附属水産実験所
  • 中島 淳
    九州大学大学院工学研究院流域システム工学研究室
  • 鬼倉 徳雄
    九州大学大学院生物資源環境科学府附属水産実験所

書誌事項

タイトル別名
  • Eggs and the Development of Larvae and Juveniles of the Torrent Catfish, <I>Liobagrus reini</I>, from the Koishiwara River, a Branch of the Chikugo River
  • チクゴガワ スイケイ コイシハラガワ ニ オケル アカザ ノ タマゴ ト ショキ ハツイク

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抄録

This paper describes the development of larvae and juveniles of the torrent catfish, Liobagrus reini, collected from the upper stream of the Koishiwara River, a branch of the Chikugo River, in August 2008. The males were guarding the eggs at the spawning site. Sixty-nine eggs were present in one egg batch, and the egg diameters ranged from 3.5 to 3.8 mm (mean±SD, 3.6±0.1 mm). The newly hatched larvae had a total length (TL) of 6.8 mm, a pair of barbells on the upper jaw, and a pair of rudimentary pectoral fins. At this stage, the mouth had opened and the notochord flexion had already begun. After 4 days (TL, 8.4 mm), a pair of rudimentary pelvic fins had formed. After 6 days, (TL, 9.6 mm), the pectoral, dorsal, and anal fin ray complements were completed. After 14-15 days, (TL, 13.2-14.4 mm) the yolk was absorbed. After 16 days, (TL, 14.6 mm), the number of caudal fin rays became fixed. The diameters of the eggs were bigger than those of the eggs of the catfish such as Silurus asotus, S. biwaensis, S. lithophilus, Pseudobagrus tokiensis, P. aurantiacus, P. nudiceps and P. ichikawai.

収録刊行物

  • 水産増殖

    水産増殖 57 (2), 315-320, 2009

    日本水産増殖学会

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