• News
  • Research

Rising temperatures turning green sea turtles female in Great Barrier Reef

Rising temperatures turning green sea turtles female in Great Barrier Reef

The northern Great Barrier Reef, the site of the overwhelming female population, has one of the largest populations of green sea turtles in the world, the study said.

Biologists consider 84.74 degrees Fahrenheit to be the pivotal temperature for green sea turtles to be born a mixture of female and males.

The sex of green turtles is influenced by temperatures during their incubation period and a difference of just a few degrees in the temperature of nests - which are dug into beaches - can result in a population that is 100% male or female.

"Finding that there are next to no males among young northern green turtles should ring alarm bells, but all is not lost for this important population". Majority of sea turtles from warmer northern beaches, on the other hand, were female, with 86.8 percent of adult turtles, 99.8 percent of sub-adult turtles and 99.1 percent of juvenile turtles turning out to be female.

"This is extreme-like capital letters extreme, exclamation point extreme", Camryn Allen, a National Oceanic and Atmospheric Administration (NOAA) endocrinology researcher and the study's co-author, told National Geographic. "With average global temperature predicted to increase 2.6°C by 2100 many sea turtle populations are in danger of high egg mortality and female-only offspring production".




Environment temperatures play a key role in determining the sex of green turtles.

For many reptiles, sex is determined not by chromosomes, but by the temperature at which their eggs are incubated.

"These results suggest that increased sand temperatures affect the sex ratios of the (northern Great Barrier Reef) population such that virtually no male turtles are now being produced from these nesting beaches", the study said. Green sea turtles are protected under the Endangered Species Act and listed as endangered on the International Union for the Conservation of Nature's Red List.

The researchers found that a gathering of turtles in the cooler southern piece of the reef were 65 to 69 percent female while a gathering from the water northern piece of the reef skewed considerably more female.

"Realizing what the sex proportions in the grown-up reproducing populace are today, and what they may look like five, 10 and quite a while from now when these youthful turtles grow up and move toward becoming grown-ups, will be extraordinarily profitable". "We know that species evolve in response to climate and other environmental changes, but they need time for that".

Leave Your Comment

Leave Your Comment


Latest News

  • Jammu and Kashmir Blast In Sopore Kills 4 Policemen

    Jammu and Kashmir Blast In Sopore Kills 4 Policemen

    However, other media reports have said that a police vehicle ran over the IED, triggering the blast. The government forces have sealed all entry and exit points of Sopore soon after the blast.
    5 deputies shot, 1 fatally, in shooting near Denver

    5 deputies shot, 1 fatally, in shooting near Denver

    My heart breaks for all of those affected by the awful tragedy in Douglas County. Multiple deputies are "down" in Douglas County, Colorado, KUSA reports .
    Trump fires entire Presidential Advisory Council on HIV/AIDS

    Trump fires entire Presidential Advisory Council on HIV/AIDS

    Scott Schoettes , a senior attorney for Lambda Legal who resigned from the council in June, considers the firings "dangerous". All 16 remaining members of the Presidential Advisory Council on HIV/AIDS were fired earlier this week.
  • Cam Newton: NFL asks for explanation over Carolina Panthers treatment

    Cam Newton: NFL asks for explanation over Carolina Panthers treatment

    He led a touchdown march that got Carolina within one score, but their next and final possession ended with a turnover on downs. After the game, Newton and Coach Ron Rivera said Newton had been hit in the eye.
    DOJ reportedly again looking at Hillary Clinton's email server

    DOJ reportedly again looking at Hillary Clinton's email server

    The former NY senator blamed then-FBI Director James Comey reopening the case right before the election on her shocking loss. A large number of emails that Clinton did not disclose during her tenure were revealed during the hearing of the lawsuit.
    Protester opens fire on police in Iran, kills 1 injures 3

    Protester opens fire on police in Iran, kills 1 injures 3

    The protests joined by hundreds of people on the pretext of poverty and unemployment in Iran have entered the fifth day. The protester used a sporting gun during the incident, the IRIB TV channel reported on its Telegram messenger account.
  • Go Bills! Steelers get Titans with Buffalo upset

    Go Bills! Steelers get Titans with Buffalo upset

    Bills running back LeSean McCoy gutted out an ankle injury sustained in the regular-season finale win over the Miami Dolphins . Taylor does a great job of not turning the ball over but he was often inaccurate with his passes this season.
    LG 88-inch 8K OLED TV is ready for CES 2018

    LG 88-inch 8K OLED TV is ready for CES 2018

    Samsung used to be a contender in this arena, as well, but the South Korean giant has since shifted its focus on QLED display. The approval of establishing this plant has also been given by the South Korean government.
    Liberian presidential election: George Weah's running mate was Charles Taylor's wife

    Liberian presidential election: George Weah's running mate was Charles Taylor's wife

    The Confederation of African Football (CAF) has sent a congratulatory message to George Weah for emerging president of Liberia. Weah, who had spells at Chelsea and Manchester City, beat Vice President Joseph Boakai, who took 38.5 per cent of the vote.
  • Will Trump and Israel Cut Off Aid to Millions of Palestinian Refugees?

    Will Trump and Israel Cut Off Aid to Millions of Palestinian Refugees?

    Relief and Works Agency (UNRWA) over what he called the Palestinians' unwillingness to talk peace with Israel. The Israeli leader said he first raised the issue with Washington's United Nations envoy Nikki Haley in June.
    Tommy Wiseau And Greg Sestero Have Now Somewhat Achieved Their Hollywood Dream

    Tommy Wiseau And Greg Sestero Have Now Somewhat Achieved Their Hollywood Dream

    I know they don't want me - guy with accent, long hair ", Franco said in his signature Wiseau accent. "So I show them. Dave Franco told The Times, "trust me it was a whole thing" about trying to get everyone together.
    Husted Reacts To End Of Trump's Election Commission

    Husted Reacts To End Of Trump's Election Commission

    He followed that up with another tweet asking Americans to "push hard for voter identification". Several states had refused to cooperate with the commission , a White House statement said.
  • Oakland Raiders to introduce Jon Gruden as new coach

    Oakland Raiders to introduce Jon Gruden as new coach

    The Alabama native played in the National Football League for four seasons, including one year with the Oakland Raiders in 2003. I don't know whose idea it was to kick off a press conference with a hype video, but I can get behind that idea.
    Blood shortage prompts 'urgent' need for donors

    Blood shortage prompts 'urgent' need for donors

    Platelets: The clotting portion of blood primarily given to cancer patients during treatment and always in great demand. O-negative is a universal blood type, meaning that it can be given to a patient no matter what blood type they have.
    Sears to close Prices Corner store

    Sears to close Prices Corner store

    Perkins said the once-iconic department store has had just one quarter of positive same-store sales growth in the last 12 years. Sears Canada, of which Sears Holdings owns 10 percent, filed for bankruptcy in June and is in the process of liquidation.
  • Crews Battling Electrical Fire Atop Trump Tower

    Crews Battling Electrical Fire Atop Trump Tower

    According to "Today", the fire is being described as a "one-alarm fire", and officials say no injuries have been reported . Trump's primary residence was in the building before his election victory and inauguration almost a year ago.
    Investigators Suspect Somebody Set Roy Moore Accuser's House on Fire

    Investigators Suspect Somebody Set Roy Moore Accuser's House on Fire

    He lost the special election to Democrat Doug Jones on December 12, turning Alabama blue from red for the first time in 25 years. The statement says investigators don't believe the fire is linked to Moore or the allegations against him.
    North Korean leader begins new year with threats against US

    North Korean leader begins new year with threats against US

    In his address, Kim Jong Un said his country's weapons are now a reality and not just a threat. His annual speech serves as a indication of his priorities for 2018.

Breaking News



Recommended

Jennifer Lawrence gets intense in full trailer for spy thriller Red Sparrow

Lawrence portrays a former Russian ballerina forced into a Russian intelligence program in order to get her mother medical care. That's the tagline for Jennifer Lawrence's new action-packed thriller Red Sparrow , which is hitting theaters this spring.

Outrage as Trump administration ends temporary protected status for 260k Salvadorans

Trump said in September that he was ending Deferred Action for Childhood Arrivals, or DACA, but gave Congress until March to act. She delayed a decision affecting more than 50,000 Hondurans, leaving that decision to Nielsen.

Donald Trump Calls CNN's Jake Tapper "Flunky" After Bizarre Stephen Miller Performance

Miller, who is known for his hard-edge attacks on political opponents and the news media, that he was wasting his audience's time. But Tapper responded: "The president has an approval rating in the 30s, I don't know what's magical that you're talking about".

Jerry Van Dyke of 'Coach' Dead at 86

According to Variety , Jerry Van Dyke , Emmy-nominated actor and younger brother of Dick Van Dyke , died on Friday at age 86. Jerry's wife, Shirley Ann Jones, told the New York Times that his health had deteriorated since a traffic accident in 2015.

David Letterman returns to TV with Obama interview

The hourlong series will premiere next Friday, and five subsequent episodes will bow monthly through the first half of the year. Obama's appearance on the new show marks the former president's first television interview since leaving office previous year .

Deal Close - Chelsea to Agree $20million Signing

Barkley refused to sign a new contract with Everton and the club have been willing to sell the midfielder since the summer. Allardyce went on to say, "The club was resigned before I got here that they were going to lose Ross".

Meltdown, Specter bugs: Apple iPhones, ipad, Macs at risk

Current updates to macOS and iOS protect against Meltdown, and Apple is working on providing better protections against Spectre. Apple this evening has officially released a statement on the Meltdown and Spectre bugs affecting ARM and Intel processors.

One tourist killed, 12 injured in hot-air balloon crash in Egypt

The Egyptian Aviation Authority confirmed 19 people were injured in the crash, which took place at about 7:30 a.m. local time. Interested in Egypt? Add Egypt as an interest to stay up to date on the latest Egypt news, video, and analysis from ABC News.

Red Dead Redemption 2 May Have A Release Date

The Red Dead Redemption 2 trailer also reaffirmed the Red Dead Redemption 2 release date of Spring 2018 for the PS4 and Xbox One . It seems like every other week there is a new retailer listing for Red Dead Redemption 2 that has a new release date.

Mariah Carey ready for her New Year's Eve do-over

The legendary annual show has been marking the end of the year from New York's Times Square for decades, and 2018 is no exception. While numerous performances will be in Times Square, singers will be performing on the west coast and in New Orleans.