oxygen

Tag archives for oxygen

How to grow a bigger heart…

…in alligators at least. Researchers from the University of Manchester, University of North Texas – Denton, and the Rockefeller Wildlife Refuge – Grand Chenier, Louisiana teamed up to explore the effects of exposure to low oxygen on embryonic American alligators (Alligator mississippiensis). Alligator eggs are often laid in nests where oxygen concentrations can reportedly vary between 11-20% (21% is normal atmospheric levels). This…

Still going strong…here are the highlights from several sessions held on Day 4: John Eme (California State University, San Marcos) presented data testing the effects of varying temperatures mimicking overwintering conditions on embryonic development of Lake whitefish. He found that indeed exposure to variable incubation temperatures between 2-8 deg C resulted in increased mortality. Moreover, the embryos hatched…

Turns out the egg is an important phase. A new study published this month in American Journal of Physiology – Regulatory, Integrative and Comparative Physiology looked at what happens in the egg when a chicken fetus was exposed to low oxygen (hypoxia) conditions. In mammals, this can occur as a result of maternal hypoxia, preeclampsia as well as anemia in…

2015 Experimental Biology- Day 2

I was very impressed by the graduate and undergraduate students who presented their research at the Scholander poster competition sponsored by the Comparative and Evolutionary Physiology section of the American Physiological Society this afternoon. I am sure the winner of the competition will be very difficult to select. Some highlights included: Bridget Martinez, graduate student at the University of California…

Fluorescent sushi?

Dr. Miyawaki from the RIKEN Brain Science Institute in Wako, Japan and colleagues have identified the first example of a muscle protein in Japanese freshwater eels (Anguilla japonica) that fluoresces under special circumstances that may lead to improved medical testing (photo above).  The researchers have isolated the protein they named UnaG (after “unagi”, the term…

Experimental Biology – Tuesday

Today’s symposia included a session on “Integrative Cardiovascular and Respiratory Physiology of Non-model Organisms” as well as the August Krogh Distinguished Lecture. This year’s Krogh lecture was given by Dr. Stan Lindstedt from Northern Arizona University. Dr. Lindstedt is arguably best known for publishing work showing that the metabolic rate of an animal is negatively…