美洲大蠊（蜚蠊目昆虫）消化酶活性的温度补偿

Compensations for temperature in the activities of digestive enzymes of Periplaneta americana (L.).

Das A K, Das A B

Comp Biochem Physiol A Comp Physiol. 1982;71(2):255-63. doi: 10.1016/0300-9629(82)90397-8.

Abstract

Differential thermal acclimatory responses of maximal catalytic rates (Vmax) of digestive enzymes have been measured in both sexes of Periplaneta americana adapted to 16 and 32 degrees C. 2. Salivary amylase of females and gastric protease of males exhibit "translational" acclimation, the former showing a "complete" but the latter only a "partial" compensation. The value of Q10 is not altered in the adaptive response. 3. An alteration of the thermal coefficient is evidenced by the "translational-cum-rotational" compensation of gastric amylolytic activity, with significant warm acclimation but no cold acclimation in both sexes. 4. Gastric protease of female cockroaches and gastric lipase of both sexes are characterized by the lack of an adaptive compensation to temperature, while salivary amylase of male appears to manifest an "inverse" acclimation. 5. Sexual dimorphism in the levels of the activities and in the patterns of thermal acclimation of the digestive enzymes is indicated.

摘要

已对适应16摄氏度和32摄氏度的美洲大蠊雌雄两性的消化酶最大催化速率（Vmax）的差异热适应反应进行了测量。2. 雌性的唾液淀粉酶和雄性的胃蛋白酶表现出“平移”适应，前者表现出“完全”补偿，而后者仅表现出“部分”补偿。适应反应中Q10的值未改变。3. 胃淀粉酶活性的“平移兼旋转”补偿证明了热系数的改变，两性均有显著的暖适应但无冷适应。4. 雌性蟑螂的胃蛋白酶和两性的胃脂肪酶的特点是对温度缺乏适应性补偿，而雄性的唾液淀粉酶似乎表现出“反向”适应。5. 表明了消化酶活性水平和热适应模式存在性别二态性。