碩士 / 國立東華大學 / 海洋生物研究所 / 107 / The quality of ex-situ coral aquaculture is affected by culture system, light intensity and flow velocity. This study tested the effect of three different types of systems ((1) RAS-B : used synthetic seawater within a recirculating aquaculture system, no additional microbial flora (2) RAS+B : used synthetic seawater within a recirculating aquaculture system, but without a protein skimmer and incorporated the addition of live rock and supplemental feeding phytoplankton nutrient solution (3) FT : used natural seawater within a flow-through system) on the physiological performance of the soft coral, Sarcophyton glaucum. In each system the effect of two levels of light intensity (PAR; 100 and 200 μmol quanta m−2 s−1) and flow velocity (5 and 15 cm s−1) on coral physiology was assessed. Corals across each of the systems had normal values of maximum quantum yield (Fv/Fm) and no mortality was observed over the course of the study. In RAS-B, the specific growth rate is affected by light intensity and flow velocity, and the oral disc diameter change rates is affected by light intensity. In RAS+B, physiological parameters are not affected by light intensity and flow velocity. In FT, the specific growth rate is affected by the light intensity and flow velocity. The oral disc diameter change rates and organic weight (%) are affected by flow velocity, and the oral disc diameter change rates is positively correlated with the specific growth rate and organic weight (%). Therefore, it is recommended to combine RAS with natural seawater in the future to cultivate predictable growth parameters under controlled environmental conditions.
| Identifer | oai:union.ndltd.org:TW/107NDHU5277014 |
| Date | January 2019 |
| Creators | Tai-Chi Chang, 張台奇 |
| Contributors | Tung-Yung Fan, 樊同雲 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 51 |
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