Assessing the Status of Rotifer Mass Cultures
作者： Terry W. Snell , Michael J. Childress , Emily M. Boyer , Frank H. Hoff
DOI: 10.1111/J.1749-7345.1987.TB01038.X
关键词:
摘要: Rotifers are widely used as live larval feed in aquaculture. The stability of rotifer mass cultures, however, remains a critical unresolved problem. It would be useful to develop indicators that can assess the status cultures and serve an early warning trouble. Indicators should sensitive, easy measure have quick response time. Two been developed fulfill these criteria: swimming activity egg ratio (eggs per female). A test is described based on measurement over grid. Results obtained minutes sensitive pH, un-ionized ammonia, starvation temperature stress culture. For about nine times more than LC50 test, maximum occurs within ten minutes. Egg also indicator physiological stress, but there 18-24 h time lag between exposure change ratio. ratios during log phase population growth ranged from 0.5-1.2 0.13-0.5 stationary phase. When fell below approximately 0.13, populations declined. Monitoring make it easier for aquaculturists keep their productive stable.
sci-hub.se 参考文章(13)
Terry W. Snell, Brian L. Garman, Encounter probabilities between male and female rotifers Journal of Experimental Marine Biology and Ecology. ,vol. 97, pp. 221- 230 ,(1986) , 10.1016/0022-0981(86)90243-1
Michael Lynch, How Well Does the Edmonson-Paloheimo Model Approximate Instantaneous Birth Rates? Ecology. ,vol. 63, pp. 12- 18 ,(1982) , 10.2307/1937025
Janet E. Beauvais, Hildegard E. Enesco, Life span and age-related changes in activity level of the rotifer Asplanchna brightwelli: influence of curare. Experimental Gerontology. ,vol. 20, pp. 359- 366 ,(1985) , 10.1016/0531-5565(85)90016-6
H. Hirata, S. Yamasaki, T. Kawaguchi, M. Ogawa, Continuous culture of the rotifer Brachionus plicatilis fed recycled algal diets Hydrobiologia. ,vol. 104, pp. 71- 75 ,(1983) , 10.1007/978-94-009-7287-2_10
Terry W. Snell, Kelly Carrillo, Body size variation among strains of the rotifer Brachionus plicatilis Aquaculture. ,vol. 37, pp. 359- 367 ,(1984) , 10.1016/0044-8486(84)90300-4
HAL CASWELL, On Instantaneous and Finite Birth RATES1 Limnology and Oceanography. ,vol. 17, pp. 787- 791 ,(1972) , 10.4319/LO.1972.17.5.0787
Alfred Seitz, On the calculation of birth rates and death rates in fluctuating populations with continuous recruitment Oecologia. ,vol. 41, pp. 343- 369 ,(1979) , 10.1007/BF00377439
Robert W. Epp, William M. Lewis, Cost and speed of locomotion for rotifers Oecologia. ,vol. 61, pp. 289- 292 ,(1984) , 10.1007/BF00379624
Jyri E. Paloheimo, Calculation of instantaneous birth rate1 Limnology and Oceanography. ,vol. 19, pp. 692- 694 ,(1974) , 10.4319/LO.1974.19.4.0692
R. M. Dorazio, Estimating population birth rates of zooplankton when rates of egg deposition and hatching are periodic. Oecologia. ,vol. 69, pp. 532- 541 ,(1986) , 10.1007/BF00410359