3/29/2024 0 Comments Hot hot songAfter they hatched, the researchers placed the chicks with foster parents living in different cages heated to different temperatures. The researchers made this discovery by placing 111 zebra finch eggs in incubators and playing recordings of zebra finch "heat songs" for half of them and non-heat songs to the others every day until they hatched. In this new effort, the researchers found that mother zebra finches can send signals to the mitochondria in embryo cells telling them to produce more ATP and less heat. Through an unknown process, the mitochondria determine how much energy to use for making ATP and how much to use to generate heat to maintain body temperature. They are also responsible for converting the same energy into heat. Part of their job is to manage the process of using the energy stored in sugars and fats to make adenosine triphosphate-the food that powers cells. Mitochondria are organelles found inside cells. In this new effort, the researchers found that in hot conditions, the finches change their tunes in a way that induces mitochondria in the cells of the embryos to produce less heat. Prior research has shown that female zebra finches sing songs when nesting.
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