Skip to main content

Natural Awakenings Dallas -Fort Worth Metroplex Edition

 972.992.8815

Gender Gap: Sea Turtles Skew Female

Rich Carey/Shutterstock.com

Scientists warn that as the Earth gets hotter, sea turtle hatchlings worldwide are expected to trend dangerously female. The West African island of Cape Verde is home to a sixth of the planet’s total nesting loggerheads, and 84 percent of youngsters are now female, researchers from Britain’s University of Exeter stated in a July report. “Males here could vanish in two or three decades,” says Adolfo Marco, a Spanish researcher. “There will be no reproduction.”

Sea turtle eggs that incubate in sand below 81.86 degrees Fahrenheit produce males, according to the National Oceanic and Atmospheric Administration, while nests in the mid-80s create a gender mix. Temperatures higher than 87.8 degrees effect 100 percent females. In Cape Verde, the sand temperature has risen about 2.3 degrees Fahrenheit since 1964. Populations in Florida and Australia are also showing dramatic sex imbalances, casting the shadow of extinction over the ancient species. Sea turtles can live for 100 years and lay more than 1,000 eggs. They are polyamorous, and one male can fertilize dozens of females.
Upcoming Events Near You
Our Current Issue

 

Our Community Sponsors

Healthy Living Healthy Planet Radio  Listen to the latest podcast on Apple Podcasts. 

Earth X
Learn more about conferences, speakers, and films. 
Dallas Area Rapid Transit 
Keeping passengers safe 24/7/365. 

Dallas Designer Smiles                            Dr. Jeff takes care of your dental needs and goals from start to finish. 

North Texas Municipal Water District  Safe and reliable water to drink and use every day. 

KnowWEwell                                               A safe space for "wholistic" health.