Institute of Marine Biology and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan.
Environ Monit Assess. 2013 Mar;185(3):2269-79. doi: 10.1007/s10661-012-2707-9. Epub 2012 Jun 9.
This study is the first measurement of trace elements in sipunculan and their surrounding sediments. The bioaccumulation characteristics of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), and zinc (Zn) were analyzed and compared in two sipunculan species, Sipuncula nudus and Siphonosoma vastum, which were collected from seagrass beds and wetlands in Taiwan. The sipunculan and sediment samples were analyzed using an inductively coupled plasma mass spectrometer. Both sipunculan in the wetlands and seagrass beds had a high Cu bioaccumulation mechanism. Multivariate analysis, principle component analysis, and partial least squares for discriminant analysis of trace element levels and bioaccumulation factors were used to distinguish the element distributions that corresponded to the two habitats (seagrass beds and wetlands). Different levels of certain trace elements in these two sipunculan species may result not only from the environmental factors of various habitats but also from the accumulation characteristics of various species. The As, Cd, Cr, Cu, Hg, and Zn concentrations were markedly lower in sipunculan than in other invertebrates from the adjacent polluted regions. The public health issues regarding the consumption of sipunculan are also discussed.
本研究首次测定了星虫及其周围沉积物中的微量元素。分析比较了采自台湾海草床和湿地的两种星虫（裸体星虫和帚虫）中砷（As）、镉（Cd）、铬（Cr）、铜（Cu）、汞（Hg）和锌（Zn）的生物累积特征。采用电感耦合等离子体质谱仪对星虫和沉积物样品进行了分析。湿地和海草床中的星虫均具有高 Cu 生物累积机制。采用多元分析、主成分分析和偏最小二乘判别分析对微量元素水平和生物累积因子进行分析，以区分对应于两种生境（海草床和湿地）的元素分布。这两种星虫体内某些痕量元素的水平差异不仅可能来自于不同生境的环境因素，还可能来自于不同物种的累积特征。与邻近污染地区的其他无脊椎动物相比，星虫体内的 As、Cd、Cr、Cu、Hg 和 Zn 浓度明显较低。本文还讨论了食用星虫带来的公共卫生问题。
