Proteolytic activity and the frequency of burst bellies in capelin
Proteolytic activity and the frequency of burst bellies in capelin
复制标题
毛鳞鱼的蛋白水解活性和爆腹频率
DOI：
10.1111/j.1365-2621.1978.tb00820.x
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
A. Gildberg
中科院分区：
文献类型：
--
作者：
A. Gildberg
总结
本文描述了在强烈摄食期（“夏季毛鳞鱼”）和产卵期（“冬季毛鳞鱼”）捕获的毛鳞鱼腹部爆裂的风险，并讨论了这种现象与鱼消化道蛋白水解活性的关系。夏季毛鳞鱼腹部爆裂的风险最高，可能是因为在强烈摄食期间捕获的鱼比一年中的其他时间含有更多的消化酶。有人建议，如果鱼在大量喂食后在消化后期捕获，则爆腹的风险最高，因为此时酶可以自由扩散到周围组织中。讨论了在中性 pH 下活跃的蛋白质溶解机制。
Summary
This paper describes the risk of burst bellies in capelin caught during the intense feeding period (‘summer capelin’) and during the spawning period (‘winter capelin’) and discusses this phenomenon in relation to the proteolytic activity in the digestive tract of the fish. The risk of belly bursting is highest in summer capelin probably because the fish caught during the intense feeding period contains more digestive enzymes than at other times of the year. It is suggested that the risk of burst bellies is highest if the fish is caught at a late stage of digestion after heavy feeding, because the enzymes are then free to diffuse into the surrounding tissue. A protein-solubilizing mechanism active at neutral pH is discussed.