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Scientists Discover Medaka Fish Can Mate Up to 27 Times a Day

share-iconWednesday, January 08 comment-icon2 weeks ago 10 views
News sources:
newsweekNEWSWEEK
Scientists Discover Medaka Fish Can Mate Up to 27 Times a Day

Credited from: NEWSWEEK

  • Researchers have identified that the **medaka fish** (Oryzias latipes) can mate up to **27 times per day**, with an average of **19 matings**.
  • The study revealed that as mating instances increase, the quantity of sperm released **significantly decreases**, dropping to just **0.5 to 6.3%** by the final mating.
  • Despite males mating frequently, the **fertilization rate** declines after the first 10 matings, raising concerns about the efficiency of sperm use.
  • This research highlights potential **sexual conflicts** between mating success for males and reproductive effectiveness for females.
  • Researchers believe this study provides critical insights into the **trade-offs of gamete production** in reproductive strategies.

For more details, visit the original article at Newsweek.

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Fish mating Medaka Reproductive behavior Sperm depletion Sexual conflict
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