小河川に生息する両側回遊性クロヨシノボリの卵数および卵サイズ

• 玉田 一晃

  田辺市立高雄中学校

書誌事項

タイトル別名

• Clutch and egg size in Rhinogobius sp. DA inhabiting small rivers.

抄録

Clutch and egg size in the Japanese amphidromous goby, Rhinogobius sp.DA (R. brunneus, dark type), inhabiting small rivers in the southern part of the Kii peninsula were examined. Clutch sizes, ranging between 1043 and 4436, increased with increasing maternal standard length. Spawned egg volume ranged between 0.85 mm³ and 1.38 mm³, mean egg volumes being similar among the eight rivers sampled during the study. Rhinogobius sp.DA had a relatively larger egg and smaller clutch size compared to those of three other amphidromous Rhinogobius species inhabiting relatively larger rivers in the same region. Inter-specihic egg size variations among the four species appear to result in differing larval survival rates during their migration to the sea.

収録刊行物

• 魚類学雑誌

  魚類学雑誌 52 (1), 17-20, 2005

  The Ichthyological Society of Japan

キーワード

• クロヨシノボリ
• 両側回遊魚
• 一腹卵数
• 卵サイズ
• 小河川

詳細情報

• CRID: 1390282679743550464
• NII論文ID: 130004019326
• DOI: 10.11369/jji1950.52.17
• ISSN: 18847374
• ISSN: 00215090
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可