碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 104 / Lead is a ubiquitous and considerable usage amount of heavy metals in the environment. Benthic organisms are more susceptible to heavy metal pollution compared to other aquatic organisms, because of the property of high density and easily settle down to the bottom of the water. Studied on the tissue Pb2+ level, tissue astaxanthin content and body coloration of Litopenaeus vannamei exposed to 2 mg/L Pb2+ concentration with time elapsed 0, 1, 2,5 and 10 days.
The highest accumulation of Pb2+ is in the shell of L. vannamei (p<0.05) that exposed to 2 mg/L Pb2+ concentration for 10 days. The descending order of astaxanthin content in different tissues is hepatopancreas, shell and muscle, whereas the astaxanthin content of shell and hepatopancreas increased with the rising concentration of Pb2+ accumulated. The correlation between tissue Pb2+ level and astaxanthin content in hepatopancreas is with a statistically significant difference (p<0.05).
Part of the body coloration, the performance of redness is on the contrary with the brightness and hue that were decreased with the increasing time elapsed. We found that the correlation between Pb2+ level and colour parameter-redness in hepatopancreas and muscle of L. vannamei are with a statistically significant positive correlation (p<0.05). In addition, there are significantly negative correlation between astaxanthin content and brightness and hue (p<0.05).
| Identifer | oai:union.ndltd.org:TW/104NTOU5451016 |
| Date | January 2016 |
| Creators | Hsieh, Chi-Fang, 謝季芳 |
| Contributors | Cheng, Sha-Yen, 鄭學淵 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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