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题名: 台灣東北海域頭足類砷之蓄積
The arsenic accumulation on cephalopods surrounding northeastern coast of Taiwan
作者: Chen, Jen-Ho
陳人禾
贡献者: NTOU:Department of Environmental Biology and Fisheries Science
國立臺灣海洋大學:環境生物與漁業科學學系
关键词: 劍尖槍鎖管;虎斑烏賊;;穩定同位素
Uroteuthis edulis;Sepia pharaonis;arsenic;tissue accumulation;stable isotope
日期: 2019
上传时间: 2020-07-02T07:40:11Z
摘要: 採樣體長11.5-32.2 cm的劍尖槍鎖管(Uroteuthis edulis)、體長7.5-16.0 cm的野生虎斑烏賊(Sepia pharaonis)及體長8.3-17.0 cm的養殖虎斑烏賊(Sepia pharaonis),作為實驗對象進行碳氮同位素比、總砷分析和無機砷分離,並探討不同物種及環境中頭足類體內同位素與砷濃度;體長與體內總砷濃度的關係;以及不同物種各組織無機砷分布。 使用了兩種分析總砷濃度的方法,包括石墨式原子吸收光譜儀、氫化物產生法火焰式原子吸收光譜儀,取三種頭足類的肝、鰓、肌肉、胃及鞘組織進行砷分析,結果發現除了養殖虎斑烏賊和劍尖槍鎖管的胃,其他組織的總砷濃度皆與體長呈現顯著正相關(P < 0.05),隨機取同體型做比較後發現,野生的虎斑烏賊在各組織的總砷濃度皆高於劍尖槍鎖管,而劍尖槍鎖管各組織總砷濃度又高於養殖虎斑烏賊。 穩定同位素分析中,劍尖槍鎖管和虎斑烏賊的δ13C和δ15N有顯著差異(p < 0.05),養殖和野生的虎斑烏賊δ13C和δ15N有顯著差異(p < 0.05),虎斑烏賊δ13C和肌肉中總砷濃度有顯著正相關(p < 0.05),劍尖槍鎖管δ15N和總砷濃度有顯著正相關(p < 0.05),利用δ15N換算出營養位階,養殖虎斑烏賊、野生虎斑烏賊及劍尖槍鎖管之營養位階分別為4.62、4.30及3.81,營養位階受到體型及物種所影響。 劍尖槍鎖管、野生烏賊及養殖烏賊中的肌肉中無機砷濃度分別為0.89、0.61及0.58 μg/g,占總砷比例皆低於10%,與體長沒有相關性(p > 0.05)。
Uroteuthis edulis (7.5-16.0 cm), wild Sepia pharaonis (11.5-32.2 cm) and aquaculture Sepia pharaonis (8.3-17.0 cm) were the experience sampled. I used carbon and nitrogen stable, isotope ratios, total arsenic analysis, and inorganic arsenic isolation to investigate the isotope and arsenic content in tissues. I discussed the relationship between cephalopods and arsenic content in different body lengths and environment, and the distribution of inorganic arsenic in tissues to different species. Two methods were used to analyze total arsenic content, including graphite furnace atomic absorption spectrometry and hydride generation flame atomic absorption spectrometry. I took arsenic analysis of the liver, gill, muscle, stomach and shell of the three individuals. It was found that in addition to the aquaculture sepia and squid in the stomach, the total arsenic content and body length of other tissues showed the significant regression (P < 0.05). I took the same type of body length randomly and compared it, which was found that the total arsenic content of the wild sepia in all tissues. Wild sepias contain the highest total arsenic content. On the other hand, total arsenic content of squids are higher than aquaculture sepias. In the stable isotope analysis, the δ13C and δ15N of squid and sepia were significantly different (p < 0.05), and there was a significant difference in δ13C and δ15N between wild and aquaculture sepia (p < 0.05).There was a significant positive correlation between δ13C and muscle total arsenic content in the sepia (p < 0.05).There was a significant positive correlation between δ15N and muscle total arsenic content in the squid (p < 0.05).I used of δ15N calculated the trophic level. The consequence showed that aquaculture Sepia pharaonis is the highest (4.62). Wild Sepia pharaonis (4.30) is next to it, and the Uroteuthis edulis (3.81) is the last. Trophic levels are affected by size and species. The content of inorganic arsenic in the muscle of the U. edulis, wild S. pharaonis and aquaculture S. pharaonis were 0.89, 0.61 and 0.58 μg/g respectively. The ratio of inorganic arsenic to total arsenic in muscle was less than 10%, and was not found to be correlated with body length(p > 0.05).
URI: http://ethesys.lib.ntou.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=G0010631008.id
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/53096
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