碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 106 / The purpose of this study is to find out the most appropriate larval culture condition combinations for the long nose algae shrimp (Cardina longirostris). Stepwise of the factors pertaining to microalgae feeding density, aeration intensity, temperature, and stocking density upon the survivals and growth of larvae have been investigated through the following triplicated experiments. Condition for salinity was 20‰. Photoperiod was12L:12D.
Experiment 1. Algal feeding density trial. Those fed at concentration of 3x105 cells/ml show the highest survival rate of 38.9±11.5%. which was significantly higher than that of other three treatments. There were no significant differences between 4 x105cells/ml (21.1±5.1%) and 2 x105 cells/ml (16.7 ±8.8%), and at 1 x105cells/ml (0%), the lowest.
Experiment 2. Aeration intensity trial. There were no significant differences between aeration intensities of 0.7L/min (27.8±7.7%) and 0.4L/min (23.3±8.8%) on larvae survivals. But no post larvae could survive at an aeration intensity of 1.2L/min.
Experiment 3. Temperature trial. Temperature at 27℃ (33.3±3.34%) was significantly higher than 29℃ (3.3±3.3%) on survivals, 25℃ (26.67±8.8%) was no significant difference among 27℃ and 29℃.
Experiment 4. Larvae stocking density trial. There were no significant differences between 30 ind. /L (33.7±1.6%) and 50 ind. /L (31.1±1.6%) , Larvae stocking density of 70 ind. /L (3.5±1.5%) was significantly lower than the other two stocking densities on survivals.
The study suggested that the suitable conditions for larvae cultivation at 25℃~27℃ except exceeded 29℃ with microalgae concentration of 3x105cells/ml, aeration intensity of 0.7L/min, and stocking density of 50 ind. /L enhanced the survival rate.
| Identifer | oai:union.ndltd.org:TW/106NTOU5086019 |
| Date | January 2018 |
| Creators | Chang, Yi-Ping, 張亦平 |
| Contributors | Huang, Yii-Shing, 黃沂訓 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 56 |
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