Another freshwater turtle we found in the Las Vegas wetlands was the Red-Eared Slider turtle (Trachemys scripta elegans). This turtle is not native to this area. It is bought as a pet but as with many pet owners, they irresponsibly release it into the wild when they don’t want it anymore. We counted as many as 15 turtles in this pond. The danger is that invasive species may out-compete native turtle species causing a decline or eradication of the native Spiny Softshell turtle.
When water temperatures drop below 10 degrees Celcius (50F) turtles are generally not active but brumate. Brumate is a form of hibernation. They will sleep on the bottom of the pond, awaken, swim to the surface, possibly drink water and then proceed back to the bottom. The process repeats itself periodically. During brumation, they do not eat.
Las Vegas had a cold spell with temperatures around freezing at night. There was some snow which is unusual here. This is why we were surprised to see these turtles sunning themselves on the rocks in the early morning. These turtles should not have been as active as they were considering the weather conditions.
Red-Eared Slider turtles can live for 20-30 years. The shell (carapace) averages between 15cm (6 inches) and 30cm (12 inches) in length. Females generally are larger than the males. A large female can lay up to 30 eggs and may lay up to 5 times (clutches) in a year.