Heat exchange with the environment and internal heat transfer during thermoregulation in fish

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14918
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 40040:Aquatic life science-related
• Research Institution: Nagasaki University
• Principal Investigator: Nakamura Itsumi 長崎大学, 海洋未来イノベーション機構, 助教 (60774601)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 行動的体温調節 / 外温性魚類 / バイオロギング / 体温 / 心電図

Outline of Final Research Achievements

Ectothermic fishes use the water temperature to regulate their body temperature, and they regulate heat exchange with environment during thermoregulation. To clarify the regulation of heat exchange during behavioral thermoregulation in ectothermic fishes, comparisons among thermoregulation of fish in different temperature environments, establish a method for measuring heart rate, and measurement of body temperature at multiple locations were conducted. As a result, the ability to prevent heat loss in low-temperature environments and changes in body temperature in fish occur from the deep body were found.

Free Research Field

生理生態学

Academic Significance and Societal Importance of the Research Achievements

外温性魚類は水温による体温調節を行っていることから、環境変動によってその行動や生理状態が変化する可能性がある。外温性魚類の行動的体温調節に関する研究については、水温に対する行動についてのみ研究されており、魚類の体内における生理状態の変化を定量的にとらえた研究はない。本研究は、魚類の体温がどのように変化するかを体内の変化も捉えた研究として学術的な意義がある。