海湾鳉鱼（Fundulus grandis）脂肪生成的昼夜节律和季节性变化。
Circadian and seasonal variations of lipogenesis in the Gulf killifish, Fundulus grandis.
作者信息
Weld M M, Meier A H
机构信息
Department of Zoology and Physiology, Louisiana State University, Baton Rouge 70803.
出版信息
Chronobiol Int. 1985;2(3):151-9. doi: 10.1080/07420528509055554.
Lipogenesis was measured in male Gulf killifish at three seasons under different environmental conditions. Cold temperature is stimulatory for lipogenesis in the fall and spring, but warm temperature is more stimulatory during the summer. The highest rate of lipogenesis occurs during the spring. However, total body fat content is relatively low at that time, which suggests that lipids are being actively mobilized as well. A high rate of lipogenesis also occurs at a cold temperature (20 degrees C) during the fall, and more lipids are stored at that time of year, as evidenced by higher liver and body fat stores. Both lipogenesis and total body fat content are at a minimum during the summer. These results indicate that high levels of lipid synthesis do not necessarily result in higher body fat content, as the latter is the product of both lipid synthesis and lipid mobilization. This study is also in agreement with previous studies which had indicated a changing responsiveness to temperature during the annual cycle of the Gulf killfish.
在不同环境条件下，于三个季节对雄性海湾鳉鱼的脂肪生成进行了测定。低温在秋季和春季对脂肪生成具有刺激作用，但高温在夏季的刺激作用更强。脂肪生成的最高速率出现在春季。然而，此时鱼体的总脂肪含量相对较低，这表明脂质也在被积极动员。在秋季，低温（20摄氏度）时也会出现高脂肪生成速率，并且在一年中的那个时候储存了更多的脂质，肝脏和身体脂肪储存量更高就证明了这一点。脂肪生成和鱼体总脂肪含量在夏季均处于最低水平。这些结果表明，高水平的脂质合成不一定会导致更高的身体脂肪含量，因为后者是脂质合成和脂质动员两者的产物。本研究也与先前的研究一致，先前的研究表明海湾鳉鱼在年度周期中对温度的反应性会发生变化。
Zotero 插件