The amount of sperm released decreased sharply with each mating during a single day, reducing the males' fertilization rate.

For any animal, releasing sperm cells requires a bit of time and energy. Using up so much energy can keep them from the other ...

Working out the kinks of mating in the animal kingdom helps to gain insights into the survival of species. Among animals that ...

Japanese rice fish – also known as medaka ( Oryzias latipes) – are a small, unassuming species that live wild in the ...

Kitty Trice speaks to bloodstock manager and head of nominations Matthew Sigsworth about a star-studded cast of mares ...

Researchers have uncovered a daily mating capacity for medaka, providing important insights into the relationship between the cost of gamete production and sexual selection.

Owner of Resolute Racing added the Australian-based pedigree analysis tool to his growing Thoroughbred portfolio ...

As these gametes are difficult to collect, the number of sperm released and the fertilization rate during successive matings had remained a mystery,” study co-author Dr Yuki Kondo explained in a ...

As these gametes are difficult to collect, the number of sperm released and the fertilization rate during successive matings had remained a mystery," Dr. Kondo explained. "Our research group ...

Honest Mischief made a splash Dec. 14 at Aqueduct Racetrack when his son Sacrosanct won the $500,000 New York Stallion Series ...

Obviously this is too wide a category, at $60,000 and upwards, to be always comparing like with like. And really those at the ...