Life Lines by Dr. Dolittle

Sponsored by the American Physiological Society

sleep

Tenrecs may shed light on the evolution of body temperature regulation

The common tenrec (Tenrec ecaudatus) just may be a living representative of ancestral placental mammals and they are very interesting when it comes to body temperature regulation and torpor. Torpor is a complex series of physiological changes that reduce an animal’s physical activity as well as heart, breathing and metabolic rates, which also results in decreases in body temperature than can be as low as their surrounding environment. Many mammalian […]

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Experimental Biology 2021: Q&A with Molly Simonis

We are delighted to speak with Molly Simonis who is currently a PhD Candidate working with Dr. Lynn Hartzler at Wright State University. Molly is a member of the Comparative and Evolutionary Physiology section of the American Physiological Society and she presented her research “Captive Big Brown Bats (Eptesicus fuscus) Display Hypothermia and Hypometabolism” at the 2021 Experimental Biology conference last month. Q: What made you interested in studying big brown […]

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Even the brainless need sleep

Most animals that we know of sleep. Sleep is very important for a healthy brain and our brains are important in regulating sleep. Interestingly, recent studies have shown that the cerebrospinal fluid actually washes out toxins from the brain when we get enough sleep at night. That “rinse cycle” so to speak is the brain’s way of staying healthy and is thought to prevent neurodegenerative diseases like Alzheimer’s. You may […]

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Extreme Fasting

While giant pandas roll in horse manure to stay warm in the winter (that’s a different story), other animals spend up to 8 months hibernating to conserve energy during times of reduced food availability and freezing temperatures. During their long winter’s nap, animals such as the Arctic ground squirrel and 13-lined ground squirrel go without food or water while at the same time avoiding muscle wasting – a rather impressive […]

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We all need to get some shut eye

I have to confess that I have been spending way too much time binge watching shows about sharks during this year’s Shark Week on Discovery Channel. I know I should be getting 7 hours of sleep a night…but could watching just one more show be that bad? Speaking of sleep, I am reminded of a study that I read awhile back examining whether sharks and rays need sleep. This may […]

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