An Introduction to the Hatchlings

The hatching process is finally coming to an end! We have 152 painted turtles, 5 red-eared sliders, and 4 river cooters. My main job now is to make sure they stay on their feet.
A red-eared slider

See the tiny white egg tooth attached to its mouth? A hatchling uses its egg tooth to poke a hole in its shell.

A river cooter

A painted turtle

They also have very different undersides.

A red-eared slider. See the yellow opening? That’s where the yolk used to be attached before the turtle absorbed it completely while developing.

 

A river cooter

And a painted turtle

The experiment (yes, that’s the reason for all the hard work so far!) will begin in September. We’ll be investigating whether PIT (Passive Integrated Transponder) tags affect the growth and development of painted turtles. A PIT tag is a microchip encased in glass injected into a turtle’s body for identification. A scanner reads the tag and produces a number unique to its bearer. For the experiment, three turtles will be designated to each tank: the first injected with a tag, the second untagged, and the last operated just like the first but not tagged. All turtles will be weighed and measured each month.

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