碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 96 / In this study, we discuss the cuttlefish, Sepia pharaonis, fertilized egg hatching days and hatching rate in different temperature and observer the development of embryo. In the other hands, we try to understand the influence of substrate and the feeding rate to the growth and survival of juvenile culture.
In the experiment of fertilized egg hatching, the best hatching temperature are 24℃ and 27℃ (hatching rate 100±0%), 90±21.69% at 21℃, the average hatching days are 21, 23 and 26 days respectively. The hatching at 18℃ and 30℃ are not good. In spite of , the days of hatching is only 19 days at 30℃, the hatching rate is the lowest (1515±13.23%). The hatching days is the longest ( 70 days ) at 18℃ and hatching rate 30%.
In the experiment of culture at different substrate, we have four substrates – naked tank, fine sand, coral sand and basket for cuttlefish juvenile culture. We found that growth of four sets are no significant differences (P>0.05). But the survival rate of basket (20±5.00％) is significant with the other three sets (P<0.05). The result shows the basket is not good for the cuttlefish juvenile culture.
The experiment of different feeding rate: the feeding rate 10%, 20% 30% 40% bw d-1 all presents exponential growth, the length of mantle and weight are no significant (P<0.05); During culture period, beside 10% bw d-1 set have 2 and 3 death at week 3 and 4 for food competition (survival rate 89.5%). The other sets survival rate are 100%.
| Identifer | oai:union.ndltd.org:TW/096NTOU5451038 |
| Date | January 2008 |
| Creators | Jen-Wei Chen, 陳仁偉 |
| Contributors | Ming-Anne Lee, 李明安 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 72 |
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