PARROT FISH THYROID EXTRACT AND ITS EFFECT UPON OXYGEN CONSUMPTION IN THE FISH, BATHYSTOMA

Abstract
Extracts from the thyroids of the parrot fish were prepd. from both fresh and dried glands and injd. into white grunts to determine the effect of oxygen consumption. Fish weighing more than 15 g. showed an avg. increase in oxygen consumption of about 75% on the 1st day after injn., while fish weighing less than this showed only 9.5% increase. Controls injd. with extracts of brain, muscle and liver showed a 21% increase in oxygen consumption.