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Posts Tagged ‘brumation’

Last Friday at Huntley Meadows Park a host of turtles emerged from their winter sleep to bask in the unseasonably warm sun, including this beautiful Spotted Turtle (Clemmys guttata). Unlike most of the turtles where I live that prefer larger, more open bodies of water, Spotted Turtles are found most often in the shallow water of marshy areas and are considered to be semi-aquatic.

As I recall, turtles do not hibernate, but instead enter a period of brumation in which they bury themselves in the mud and slow down their metabolisms. According to the Pee Dee Wildlife Control website, “Brumation is different than hibernation as the animals who brumate can wake up on the random warm days to sun themselves and drink water to avoid dehydration, whereas a hibernating animal will not.”

The temperature last Friday soared to 80 degrees (27 degrees C) at Ronald Reagan National Airport here in the Washington D.C. area, a record high temperature for the month of January. The change in temperature was particularly jolting, because it came just one week after a snowstorm had dropped five inches (13 cm) of snow on us and a protracted period of sub-freezing temperatures that followed that storm.

 

Spotted Turtle

© Michael Q. Powell. All rights reserved.

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The weather yesterday was so nice that turtles emerged from the mud for the first time in months to bask on logs and enjoy the warmth of the sun.

My understanding is that the turtles have been spending the cold winter months buried in the mud with their metabolism slowed way down. I would call this state “hibernation,” although there apparently is some argument in the scientific community about whether that term should be reserved for mammals and the term “brumation” used for reptiles, because the physiological processes are different. Whatever you call it, reptiles can move in and out of this state and seem to have moved out of it to soak up some sum.

The turtle in this photo looks like he has not had a lot of time to clean off the mud that fills all of the creases and crevices in his body and shell. He almost looks like he is smiling and he is definitely alert.

Most of the turtles that I have photographed previously at my marshland park have been Red-eared Sliders, but I can’t tell if this one is a member of that species or is a different type. I did note that there is a semi-circular pies missing from both the left and right front areas of the shell. Has something been gnawing on the shell? What would have caused the damage?

I looked around to see if I could see any frogs yesterday, but they are still in their wintering mode. I suspect that it won’t be long before the frogs and snakes are back and I’ll soon be keeping a look-out for my first dragonfly of the season.

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© Michael Q. Powell. All rights reserved

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