The role of the anal fin in fertilization success in male medaka, Oryzias latipes.

• KOSEKI YUSUKE

  Department of Biology, Faculty of Science, Shinshu University Laboratory of Conservation Biology, University Forests, Hokkaido University

• TAKATA KEISUKE

  Department of Biology, Faculty of Science, Shinshu University

• MAEKAWA KOJI

  Laboratory of Conservation Biology, University Forests, Hokkaido University

書誌事項

タイトル別名

• role of the anal fin in fertilization success in male medaka Oryzias latipes

抄録

The anal fin of the medaka Oryzias latipes is sexually dimorphic, with mature males developing a larger anal fin than females. To determine the functions of the male anal fin during mating, an anal fin-removal experiment was conducted. Males were mated with females in successive treatments in which different portions of the anal fin were removed. Male medaka with half of their anal fin removed fertilized a significantly lower proportion of eggs than did males with a normal anal fin. The results show that the anal fin in male medaka is important for efficient fertilization, suggesting selection for a larger anal fin.

収録刊行物

• Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ

  Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ 66 (4), 633-635, 2000

  公益社団法人 日本水産学会

キーワード

• fertilization success
• function
• Oryzias latipes
• sexual dimorphism
• size manipulation

詳細情報

• CRID: 1390282679406481792
• NII論文ID: 130003903464
• NII論文ID: 10004859237
• NII書誌ID: AA10993718
• DOI: 10.1046/j.1444-2906.2000.00103.x
• ISSN: 14442906
• ISSN: 09199268
• NDL書誌ID: 5500989
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5500989
• 本文言語コード: en
• データソース種別:
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