More Female Sea Turtles Born as Temperatures Rise

Male sea turtles are disappearing from Australia’s Great Barrier Reef. A new study of gender ratios found that 99 percent of immature green turtles born in the northern part of the reef are female. Among adult turtles, 87 percent are female, suggesting that there has been a shift in gender ratios over the last few decades. A sea turtle’s sex is determined by its nesting environment. As sands warm, more females will hatch relative to males; if the sand temperature tops 84.7 degrees during incubation, only females will emerge. The gender shift suggests that climate change is having a significant effect on one of the biggest green turtle populations in the world, said Michael Jensen, lead autho

About me

Cover COVID-19 

and patient safety

for USA Today.

Former long-time health/science

journalist, contributing to The

New York Times, The Washington Post, 

Scientific American.com, and others. Journalism educator and book author.

Contact:

kweintraub@usatoday.com

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