Sunday, May 24, 2020

Why Turtles Produce almost All Female Hatchlings Recently? - Nature and Wildlife 10

Green turtle as one of endangered species.

When I was walking with my dad in remote beaches in the tropical country along long time ago, we found turtle eggs in the beaches sometimes.

We did not know the natural sex ratio of male and female turtle hatchlings, we just guessed equally the same with little bit higher for females.

It is stunning to know that scientists found new hatchling to have almost all females sex identity in the Great Barrier Reef, Australia.

Why?

Naturally, temperature decide sex ratio of turtles, higher temperature means female more. On the contrary, lower temperature will cause plenty males than females.

Sex ratio of turtle when eggs put in incubator with varies temperatures are following:
- at C 28.5 (F 83.3) degree will produce equally males and females broods.
- above C 30 (F 86) degree produces all females hatchlings
- below C 25 (F 77) degrees produce all males turtle babies.

Many scientists have concluded that “climates changes” which relate to increasing of temperature responsible to more females in Great Barrier Reef turtle broods.

In short term, scientists try to design lower nest temperature to get equal sex ratio of turtles. Hope, world could handle the climate changes in near future. 

18 comments:

  1. Oh, saya baru mengerti dari sini jiia saat suhu cuaca terasa panas maka akan menyebabkan bayi kura-kura lahir lebih banyak betina ...
    Unik :)

    ReplyDelete
  2. Replies
    1. Why Turtles Produce almost All Female Hatchlings Recently? - Nature and Wildlife 10

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  3. Interesting.. Sometimes in our neighborhood, we see turtles.. Sometimes in the middle of the road or on the grass..

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  4. This is something I learned when we would go to the hatching releases in summer. Sadly, this year because of the virus, there won't be a public exposure to the releases.

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  5. Very interesting, thanks for sharing.

    ReplyDelete
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    1. Why Turtles Produce almost All Female Hatchlings Recently? - Nature and Wildlife 10

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  6. So sweet, the turtle! Interesting post.
    xoxo

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  7. I love turtles. I had no idea temperature effected the gender of the babies. Thanks for the info on this and in your last post too!

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  8. ...when I'm in Maui I see lots of turtles resting and sunning themselves on the beach. I've never seen eggs and this information is interesting and saddening! Thanks for sharing.

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  9. I am passionate about conservation and this is another piece of bad news for these wonderful sea turtles. If you have a chance there is a group called "The Turtle Hospital" on facebook and on the web. They rescue sea turtles from many problems but also from tumors that they believe are caused by a virus made worse by warmer waters. It is amazing to see how they help these turtles. ..Michelle

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  10. That is very very interesting to know my friend Tanza. Now I know why sea turtles are more female than male due to the climate change sadly. We have so many sea turtles in the Philippines but sadly their numbers are dwindling :(

    ReplyDelete
    Replies
    1. Why Turtles Produce almost All Female Hatchlings Recently? - Nature and Wildlife 10
      -
      When I was walking with my dad in remote beaches in the tropical country along long time ago, we found turtle eggs in the beaches sometimes.

      We did not know the natural sex ratio of male and female turtle hatchlings, we just guessed equally the same with little bit higher for females.

      It is stunning to know that scientists found new hatchling to have almost all females sex identity in the Great Barrier Reef, Australia.

      Why?

      Naturally, temperature decide sex ratio of turtles, higher temperature means female more. On the contrary, lower temperature will cause plenty males than females.

      Sex ratio of turtle when eggs put in incubator with varies temperatures are following:
      - at C 28.5 (F 83.3) degree will produce equally males and females broods.
      - above C 30 (F 86) degree produces all females hatchlings
      - below C 25 (F 77) degrees produce all males turtle babies.

      Many scientists have concluded that “climates changes” which relate to increasing of temperature responsible to more females in Great Barrier Reef turtle broods.

      In short term, scientists try to design lower nest temperature to get equal sex ratio of turtles. Hope, world could handle the climate changes in near future.

      Delete
  11. Fascinating really. Will there be a similar finding for humans as the temperatures continue to rise I wonder?

    ReplyDelete
  12. Thank you. That was a fascinating post with some really interesting information. I live in Miami Beach in Florida. We get sea turtles here but I never heard anything about the sex of the offspring.

    ReplyDelete
    Replies
    1. Why Turtles Produce almost All Female Hatchlings Recently? - Nature and Wildlife 10
      -
      When I was walking with my dad in remote beaches in the tropical country along long time ago, we found turtle eggs in the beaches sometimes.

      We did not know the natural sex ratio of male and female turtle hatchlings, we just guessed equally the same with little bit higher for females.

      It is stunning to know that scientists found new hatchling to have almost all females sex identity in the Great Barrier Reef, Australia.

      Why?

      Naturally, temperature decide sex ratio of turtles, higher temperature means female more. On the contrary, lower temperature will cause plenty males than females.

      Sex ratio of turtle when eggs put in incubator with varies temperatures are following:
      - at C 28.5 (F 83.3) degree will produce equally males and females broods.
      - above C 30 (F 86) degree produces all females hatchlings
      - below C 25 (F 77) degrees produce all males turtle babies.

      Many scientists have concluded that “climates changes” which relate to increasing of temperature responsible to more females in Great Barrier Reef turtle broods.

      In short term, scientists try to design lower nest temperature to get equal sex ratio of turtles. Hope, world could handle the climate changes in near future.

      Delete
  13. Thank you for sharing this interesting information.

    ReplyDelete

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