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Author Topic: Sperm don't like heat, so climate change could damage male fertility, study says  (Read 1907 times)

Offline mozart123

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The latest problem to be linked to global warming: male sperm counts.

It's not good news. According to a new study published Tuesday, male fertility appears to decline as temperatures soar. The study showed "clear evidence" that stress from heat waves reduces "sperm number and viability" in bugs.

Yes, the scientists used beetles to test their theory. But researchers say the insects can be used as a proxy for people.

Beetles are one of the most common species on Earth, "so these results are very important for understanding how species react to climate change," said study co-author Matt Gage, an ecologist at the University of East Anglia in the U.K.

Heat waves are predicted to be more frequent and more extreme this century as human-caused climate change continues.

"Research has also shown that heat shock can damage male reproduction in warm-blooded animals too, and past work has shown that this leads to infertility in mammals,” added lead author Kirs Sales, also of the University of East Anglia.

"Our research shows that heat waves halve male reproductive fitness, and it was surprising how consistent the effect was,” he added.


https://www.usatoday.com/story/tech/science/2018/11/13/climate-change-could-damage-sperm-and-thus-male-fertility/1990220002/?fbclid=IwAR3xL8dlSwgFz8Tf3iwGlYDfUFneKLgXjnrEaBEWDYEghyJIgzLmj8u0MYw
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