Zebrafish experiments demonstrate how vulnerable freshwater and marine species may be impacted by climate change. When the climate changes, which organisms survive and which die? A small larval fish is offering unexpected insight into how the brain reacts to rising temperatures. “It was pretty i
The researchers found that heat turns off the brain.
In order to figure out the answer, biologists from NTNU’s Department of Biology have combined genetic technology with neurophysiological techniques. “Thermal tolerance is a topic that has been researched for decades, and the idea that temperature affects brain activity is an old one. What’s new is that we can now use genetic technology and neurophysiology to study the phenomenon,” says Andreassen.
The researchers poked the fish larvae to check their response. They nudged the larvae’s tails, which normally triggers a swimming response. “We know that zebrafish brains have quite a lot in common with the human brain – 70 percent of the genetic material is the same – and researchers have speculated whether there could be a connection between what we saw in these fish larvae and what you see in the brains of children who have a fever,” says Andreassen.“What we’re excited to investigate here is the activity of glial cells during heating.
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