Scientists find new variations among spermcells SciReports
The work , which included Haining Chen, an NYU graduate student at the time of the study and now at Westlake University in Hangzhou, China, focused on sperm cells in male fish—specificallycave fish. It compared the sperm cells in normal fish with those of fish whose sperm production had been artificially mutated. This allowed the scientists to identify behavioral andpotentially altering the sperm's chances in the race to fertilize the egg.
Paths of individual swimming sperm over a one-second interval, illustrating the great variation among individual sperm in swimming velocity and curvature. Credit: Richard Borowsky, New York University Their results showed no difference in flagellar length— the hair-like appendage that propels them as they swim towards the egg—between the normal and mutated samples. However, there was greater variability in the velocity, or swimming speed, of the mutated samples compared to the normal ones—meaning that in many instances, the mutated samples swam at lower and faster speeds than did normal ones.
It's been long established that sperm from different males vary in their characteristics because of the genetic differences between the males. This study established that differentMore information:
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