熱帯から寒帯の海域における種々の魚種の棲息水温の違いが筋原繊維タンパク質の温度安定性に及ぼす影響〔英文〕

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The first order rate constants, KD, of thermal inactivation of myofibrillar Ca2+-ATPase were determined for a total of 79 fishes of 50 families caught from six waters covering from the tropical waters, 28°C in a bottom water temperature, to the cold waters, 2°C. The mean value of KD for fishes from a certain fishing ground tended to be lower with a higher habitat temperature; the value was lowest for the fishes from the Gulf of Thailand (28°C in the habitat temperature), followed by fishes from northern waters in the order of the adjacent waters of Amami-Oshima (25°C), Sakishima Islands (28°C), the East China Sea (17°C), the Yollow Sea (9°C), and off Kushiro (2°C). A significant, negative, logarithmic functional correlation was seen between the bottom water temperature of a fishing ground (t) and the mean value of KD for fishes inhabiting there (-KD); their rela-tion is formulated as below. ln KD=-0.1013t+5.611 Similar influences of habitat temperatures on KD were also seen for a fish from two areas of different habitat temperatures, though the degree of the influence was somewhat variable by fish species. Fishes with higher values of ΔK32, the increasing rate of K value, tended to show higher values of KD.
日本水産學會の論文