Viable periods of fertilizability of eggs and sperm of Japanese medaka, <i>Oryzias latipes</i>

• Koike Yukari

  岐阜大学教育学部

• Koya Yasunori

  岐阜大学教育学部

Bibliographic Information

Other Title

• ミナミメダカにおける卵と精子の受精能保持時間
• ミナミメダカ ニ オケル タマゴ ト セイシ ノ ジュセイノウホモチジカン

Abstract

In order to clarify the period during which eggs and sperm of Oryzias latipes remained viable following release into fresh water, the fertilization rate of eggs over time following immersion in fresh water, was investigated, in addition to sperm motility. Fertilizability of the eggs persisted for more than 6 minutes after immersion , but was lost after more than 10 minutes in some cases. Sperm retained motility for about 2–3 minutes in fresh water, being affected by osmolality; motility was high in 100–300 mOsm/kg, but absent in 700 mOsm/kg. These results suggested that O. latipes eggs can be fertilized for up to 6 minutes following spawning in fresh water, whereas sperm remain viable for only 2–3 minutes following released.

Journal

• Japanese Journal of Ichthyology

  Japanese Journal of Ichthyology 61 (1), 9-14, 2014

  The Ichthyological Society of Japan

Keywords

• Oryzias latipes
• 精子活性
• 精子運動
• 卵付活

Details

• CRID: 1390282680490391936
• NII Article ID: 130005152808
• NII Book ID: AN00063212
• DOI: 10.11369/jji.61.9
• ISSN: 18847374
• ISSN: 00215090
• NDL BIB ID: 025517329
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010872394
• Web Site: http://id.ndl.go.jp/bib/025517329
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025517329
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
  • Crossref
• Abstract License Flag: Disallowed