Life Lines by Dr. Dolittle

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Tag Archive for ‘frog’

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Stranger than science fiction: treefrogs that freeze and live to tell the story

Today we have a guest blog written by Elizabeth Evans (pictured above), a graduate student at the University of Dayton working in the laboratory of Dr. Carissa Krane. She presented her research on freeze tolerance today at the 2022 Experimental Biology conference in Philadelphia. She wrote the award-winning blog entry below which earned the 2022 Dr. Dolittle Travel Award to attend the conference. Congratulations Elizabeth!! Stranger than science fiction: treefrogs […]

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Frogs are teaching researchers about autism

Dr. Helen Willsey at the University of California San Francisco is seeking to understand how autism develops with the help of frogs. Because frogs produce thousands of embryos at the same time, she is able to quickly study the effects of many different gene alterations in the offspring. While the embryos are at the two-cell stage of development, her laboratory alters genes in just one of the cells using CRISPR-Cas9 […]

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Exploring how temperature impacts the characteristics of animals

We are delighted to speak with Dr. Casey Mueller who is currently an Assistant Professor at California State University San Marcos. Dr. Mueller is a member of the Comparative and Evolutionary Physiology section of the American Physiological Society and was scheduled to present her research at the 2020 Experimental Biology conference last month. Unfortunately, the conference was cancelled due to Covid-19. Her researchappears in the May issue of the FASEB […]

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Guest Blog: Liver genes of Cope’s gray treefrog provide clues to low temperature and freezing

Dr. Clara do Amaral is a postdoctoral fellow at the University of Dayton in Ohio where she studies freeze tolerance in frogs. She received a Research Recognition Award from the Comparative and Evolutionary Physiology section of the American Physiological Society at the 2017 Experimental Biology meeting in Chicago, IL. She prepared this award-winning guest blog entry to describe her interesting research: The Cope’s gray treefrog is a small frog that occurs in […]

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What do frogs and humans have in common?

Leptin is a hormone that signals the brain to suppress appetite in humans. While researchers at the University of Michigan described a similar appetite regulating role for leptin in South African clawed frogs (Xenopus), they also discovered that leptin signals limb development in tadpoles. They suspect that this happens once there are sufficient energy stores to begin the process of metamorphosis. Shalitin and Kiess (2017) also described a role for leptin in skeletal development of children and researchers implicate leptin in […]

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Fluorescent frogs

A new article published in the Proceedings of the National Academy of Sciences presents the discovery of a species of frog with fluorescence. The South American polka dot tree frog, aka Hypsiboas punctatus is already rather cute under normal light. But when exposed to UV light, this frog really shines. It gets its glowing personality from fluorescent molecules, hyloin-L1, L2 and G1, found in the skin, lymph tissues, and secretions from glands. These molecules have not been found in […]

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