Studies on the Assessment of the Growth Potential of the Rotifer, Brachionus plicatilis, by Evaluating Physiological Activities
Studies on the Assessment of the Growth Potential of the Rotifer, Brachionus plicatilis, by Evaluating Physiological Activities
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通过生理活动评价轮虫褶皱臂尾轮虫生长潜力的研究
DOI：
10.11233/aquaculturesci1953.47.249
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
A. Hino
中科院分区：
文献类型：
--
作者：
M. Koiso;A. Hino
为了预测褶皱臂尾轮虫的大量培养效果，对个体的生理活动进行了评价。以摄食率、消化器官在体内的分布、洛里卡长度的频率分布和耐高盐环境能力为指标。摄食率随时间的延长而降低，在生长曲线的峰值附近出现最低值。摄食个体的大小分布和消化器官的范围只有在养殖条件急剧恶化时才发生变化。对于不摄食的个体，在培养过程中有特定的粒级增加。70ppt处理3小时，当生长接近高峰时，个体的耐盐能力突然下降。在产卵雌虫中更为敏感。从低耐受性轮虫开始的培养显示出生长停滞。从结果来看，进食个体的百分比和不进食个体的大小分布似乎有助于预测大众文化的变化。并且，高盐耐受性被认为是轮虫在培养物中生长和生产的合适预测因子。
To forecast the result of mass culture of the rotifer, Byachionus plicatilis, physiological activities of individual animals were evaluated. Indices Criteria were percentage of feeding individuals, extent of digestive organs in the body, frequency distribution of lorica length and tolerance to hyper-saline environment. The percentage of feeding individuals decreased with time, and the lowest value was observed near the peak of the growth curve. The size distribution of feeding individuals and the extent of digestive organs changed only when the culture condition deteriorated sharply. As for the nonfeeding individuals, a specified size fraction increased in the course of culture. Hyper-saline tolerance for individuals in 70ppt for 3 hours suddenly dropped when the growth was close to the peak. It was more sensitive in egg-bearing females. The culture started with rotifers of low tolerance showed a stagnant growth. From the results, the percentage of feeding individuals and the size distribution of non-feeding individuals seemed to be useful for forecasting the change of mass culture. And, hyper-saline tolerance was considered to be a suitable predictor of rotifer growth and production in the cultures.