Forebrain Temperature Activates Behavioral Thermoregulatory Response in Arctic Sculpins

• Published in: Science
• Main Authors: Hammel, H. T., Strømme, S. B., Myhre, K.
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Association for the Advancement of Science (AAAS) 1969
• Subjects: Arctic
• Online Access: http://dx.doi.org/10.1126/science.165.3888.83; https://www.science.org/doi/pdf/10.1126/science.165.3888.83

Arctic sculpins of the genus Myoxocephalus adapted to water at 5°C escaped from warm water at 20°, 16°, and 12°C when their deep-body temperatures increased from an initial 5°C to about 8°C. Heating parts of the forebrain with water at 25°C circulating through a pair of thermodes astraddle rostral parts of the forebrain shortened the time spent in the warm water and lessened the increase in deep-body temperature before exit from the warm water. Cooling the forebrain to about -1°C caused a large increase in the body temperature and sometimes suppressed the escape from the warm water.