AI Generated Image
Scientists Describe 'Incredible' Movements of Fruit Fly Sperm
Newser • • science
Key Points:
- Male Drosophila melanogaster fruit flies produce sperm about 40 times longer than human sperm, nearly matching their own body length.
- Their seminal vesicles, despite being very small, store thousands of these 2-millimeter-long sperm without them becoming tangled.
- Researchers used fluorescent dyes and 3D electron microscopy to observe that the sperm generate slow, coordinated flows within the storage organ, maintaining alignment.
- Unlike human sperm that swim individually, fruit fly sperm push against others moving in the opposite direction, keeping their tails stretched and preventing knots.
- The study highlights this mechanism as an impressive evolutionary and mechanical adaptation for efficient sperm storage.
