Turtle Population Sex Ratios at Urban vs. Rural Locations

by Abigail Conklin

Faculty mentor: Professor Bradley Lamphere

In many turtle species, the sex of an individual is strongly influenced by the environmental temperatures it experiences prior to hatching. Climate change and urbanization may raise the temperature of nesting habitat enough to strongly skew sex ratios in freshwater turtles, but data on that question are lacking. I sampled multiple urban and rural sites to examine the effect of urbanization on the sex ratio of turtle populations. Three urban sites and three rural sites were sampled.

3 Replies to “Turtle Population Sex Ratios at Urban vs. Rural Locations”

  1. Abigail – thank you for your presentation. Is there differences in the average temperatures of the nesting areas that you sampled?

  2. Hi, Thank you for sharing good presentations about turtle and climate change. I read some articles about that there are more female turtle hatched than the male turtle because of the climate change. I really enjoyed it because I am a turtle mom and studying about the turtle myself, such as their species and habitat for my turtles.

    I got a little question about this, so you basically caught some turtle during the summer and exam their sex ratio. I heard from the breeding site that usually female turtle hatched when the temperature is higher than the male. That means you could conclude the climate has been increased. But, I was also thinking about that have you considered that those turtles used to be pet turtle or could breed by people. I saw some people actually control their sex when they are breeding. Because It is not easy to figure out the turtle’s sex during their hatchling, it is possible after at least one years later. Here is my question.

    If you say that some turtles are breed by people and released later let’s say about 20 percents are breed and only 80 percents are wild turtle and what if there are more percentages for the breed turtles later perhaps 30 percents breed and 70 percent wild turtle or more, then are you still able to have the same conclusion as you have now or your conclusion possibly changes?

    Thanks, for reading this long question and I hope this research will continue, it is always fun to see about turtles!

  3. Great presentation and I am happy with the results from the last time I saw your work last summer!

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