Posted on Friday, November 16th, 2007 by pelf and filed in Turtle Talks

Photo HuntIt’s time, and this week, we are flexible to talk about anything we want to, as long as it is something we :heart: love :heart:

And well, if that’s the case, you know what I’m going to talk about, right?

Sleepy hatchling

This river terrapin looks sleepy because it has just been anesthetized for a non-invasive non-sacrificial surgical procedure to determine its sex. The procedure is called laparascopy. We administered some Ketamil according to its body weight and then allowed it 5 to 10 minutes to fall asleep.

After it has completely knocked out, we make a small incision (about 2cm) near its leg, and insert a laparascope (an inverted telescope) into its body cavity to look for its reproductive organ (either a testis or an ovary). I blogged about the entire sexing procedure on my previous blog.

And in case you’re wondering, yes, the sex of a river terrapin, as with any other reptiles, is determined by the temperature in which the eggs were incubated. Cooler temperatures produce males, and warmer temperatures produce females.

Updated: This particular terrapin hatchling was a male, as with many of the others that we sexed, due to the low temperatures at the hatchery on campus :)

  1. jesie says:

    I love to watch turtle laying eggs. Unfortunately I was not allowed to take any pictures.

    Poor turtle have to go through all that to determine its sex. Thanks for sharing the photo and information. It’s educational as well as fun.

    Enjoy your weekend.

    jesie’s latest blog post: PhotoHunt – I Love This Couple!

  2. Excellent picture and the accompanying story. But what was the gender of this specimen?

    SnoopyTheGoon’s latest blog post: Photohunt: I love my Treo

  3. Siani says:

    Great pic – and a very informative post. Have a great weekend!

    Siani’s latest blog post: PhotoHunt: I love …

  4. Jodi says:

    Great pic!!

    Jodi’s latest blog post: Saturday Photo Hunt

  5. Diana13 says:

    Beautiful photo! It seems you are a turtle-aholic person :biggrin:

    Diana13′s latest blog post: PhotoHunt: I love ____

  6. Andrée says:

    This is one fantastic and interesting post. My favorite! Thank you.

    Andrée’s latest blog post: Photo Hunters: I Caught the Train

  7. julie says:

    Oh, I had to tilt my head to look at his face, so calm! I have friends who collect turtles. But one baby turtle which was in their garden was eaten by a big sewer rat. Bad rat! Poor baby turtle.

    Lovely photo, Pelf :)

    julie’s latest blog post: Photo Hunt: I Love?

  8. Natalie says:

    That’s great! Turtles are great!

    Natalie’s latest blog post: Mmmm…Did You Smell That?

  9. Simonne says:

    I had no idea that you need to get inside a turtle’s body to determine its sex.
    The photo looks great, I like the expression on the terrapin’s face: it looks like he’d like to sleep a little longer.

  10. Adam Snider says:

    Does it really count as non-invasive when you’re making an incision and inserting something into the animal?

    Not saying that it’s a horrible procedure, by any means, but I don’t think it’s non-invasive.

    Interesting post, though.

    Adam Snider’s latest blog post: Edmonton Next Gen is Recruiting

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