Life Lines by Dr. Dolittle

Sponsored by the American Physiological Society

Ocean Life

The Effects of Ocean Acidification on California Sea Hare

Today’s guest blog entry comes from Rebecca Zlatkin. Rebecca ‘Becky’ Zlatkin was born and raised in Miami, FL and recently graduated from the University of Miami with a bachelor’s in Exercise Physiology and a minor in Biology. Previously a student at Miami Dade College’s Honor College, Becky came to the lab of Martin Grosell at UM’s Rosenstiel School of Marine and Atmospheric Science through the Bridge to Baccalaureate Program, a collaboration […]

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Physiology of diving animals: how do they deal with hypoxia?

Dr. Jose Pablo Vazquez-Medina (pictured at right), a comparative physiologist at the University of California – Berkeley, was scheduled to present several ongoing studies from his lab at the Experimental Biology conference last month. Dr. Vazquez-Medina is a member of the Comparative and Evolutionary Physiology section of the American Physiological Society. Although the conference was cancelled due to Covid-19, Dr. Vazquez-Medina has agreed to share his research with us.   […]

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Dolphins can develop similar neurological diseases as humans

I am pretty sure most people would agree that dolphins are pretty smart. But did you know that they may develop similar neurological conditions as humans? I read an interesting article published in Drug Target Review exploring how dolphins that have washed up on beaches may help us understand neurological diseases like Alzheimer’s as well as responses to viral infections. For example, Dolphin morbillivirus (DMV) is a virus similar to […]

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Developing Pacific molluscs produce their own carbohydrates

Animals that develop within an egg, must rely on the egg yolk for nutrition for healthy development. While we have known that proteins and fats in the egg are important for development, the role of carbohydrates in the development of molluscs is a bit vague. A new study published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology examined the role of carbohydrates in the development of Pacific […]

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First ever recording of heart rate in free swimming blue whales

While we are on the topic of whales, I found additional research published in the Proceedings of the National Academy of Sciences USA on these animals and how their hearts function that I find fascinating. Talk about extreme physiology! Researchers from Stanford University were able to attach surface electrodes to blue whales using suction cups. This allowed them to measure – for the first time – how heart rate changes during […]

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Researchers explore how the largest animals get enough to eat

Ever wonder how baleen whales (Mysticeta) get enough to eat? The mechanism is described for rorqual whales (Balaenopteridae) in a review article published this past October in Physiology. Researchers have found that rorqual whales (ex: blue whales and fin whales), in particular, have an interesting strategy for foraging. The process includes 5 steps that take place in rapid succession (about 20-90 sec total): quick forward lunges toward prey; opening their […]

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Evolving to thrive on land

Scientists Xueping Wang, Deidra M. Balchak, Clayton Gentilcore, Nathan L. Clark, and Ossama B. Kashlan from the University of Pittsburgh are presenting their research today on how sodium channels evolved as animals moved onto land at the 9th Aldosterone and ENaC in Health and Disease: The Kidney and Beyond Conference in Colorado. Sodium channels found in epithelial cells (ENaCs) are very important in regulating salt and water balance especially in the […]

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