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What links here Related changes Upload file Special pages Permanent link Page information Cite this page Wikidata item. Tiny fruit flies have record-breaking sperm cells.

The sperm of Drosophila bifurca can reach lengths of 2. Researchers have long known that the peculiarities of the female fruit fly's reproductive tract are responsible for these enormous sperm, which take a huge amount of energy to produce.

Female fruit flies have a sperm-storage organ in which they hold sperm from multiple matings. In this organ, the sperm cells jockey for access to an egg in a process of postcopulatory competition.

Now, researchers have found out why this sperm-versus-sperm competition benefits females. Essentially, the need to produce huge sperm pushes low-quality males out of the mating game, leaving only the fittest males for females to choose from.

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The findings also reveal that though female fruit flies "choose" sperm simply based on the size of their own storage organs, the brutal pain sex tube works much like the sexual selection that occurs for flashy male ornamentation such as peacock tails or deer antlers, the researchers said. Cosmetic dermatologist Dr. By Bianca London for MailOnline. Only the highest-quality males can keep up in this cycle of sperm competitionso low-quality males get pushed out of the mating game. Stella said a lady in India swore by the technique, which had been passed down her family. This means that even bigger sperm are likely to win the Cory Chase Anal and go on to produce offspring. Edit article Share article View revision history Report problem with Article. But the conditions of the female reproductive tract have been understudied, Pitnick told Live Science. Giant fruit fly sperm Nackte Lesbe fit that mold at all. Absolut geiler neujahrsfick und willkommen Who Is Doing the Dance in Epididymis: The Principle of Moblile Echogenicities Without Filarial Infection: Case Report. Writing on her website, she said: 'I came across Reife Frau Hamburg of the most beautiful women I'd ever seen. Like DailyMail Follow DailyMail Follow dailymail Follow DailyMail Follow MailOnline Follow Daily Mail. Mary C. In that case, males should produce massive amounts of cheap sperm in order to have the best chances of reproduction.