Maternal transfer of arsenic to eggs of black-tailed gull (Larus crassirostris) from Rishiri Island, Japan†
Maternal transfer of arsenic to eggs of black-tailed gull (Larus crassirostris) from Rishiri Island, Japan†
复制标题
日本利尻岛黑尾鸥 (Larus crassirostris) 卵中砷的母体转移†
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
Y. Shibata
中科院分区：
文献类型：
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作者：
R. Kubota;T. Kunito;S. Tanabe;H. Ogi;Y. Shibata
总砷和个别砷化合物的浓度测定在几个组织和黑尾鸥（Larus crassirostris）的蛋，以表征积累和母亲转移到鸡蛋。在肝脏、肾脏、胰腺、肌肉和性腺中观察到相对较高的砷浓度。砷在黑尾鸥卵中的转移率约为10%。化学形态分析表明，砷甜菜碱是所有组织中的主要砷化合物。二甲基胂酸，甲基胂酸，砷胆碱，和一个身份不明的砷化合物也被检测到的次要成分。与母体组织一样，鸡蛋也含有砷甜菜碱作为主要的砷化合物，二甲基胂酸作为次要化合物。这些结果表明，砷甜菜碱和二甲基胂酸可以从母鸟转移到鸡蛋。据我们所知，这是第一次报告的母体转移砷物种的海鸟蛋。
Concentrations of total arsenic and individual arsenic compounds were determined in several tissues and eggs of the black-tailed gull (Larus crassirostris) to characterize accumulation and maternal transfer to eggs. A relatively high concentration of arsenic was observed in the liver, kidney, pancreas, muscle and gonad. The transfer rate of arsenic to eggs of the black-tailed gull was about 10%. Chemical speciation analysis revealed that arsenobetaine was the major arsenic compound in all the tissues. Dimethylarsinic acid, methylarsonic acid, arsenocholine, and an unidentified arsenic compound were also detected as minor constituents. Like maternal tissues, egg also contained arsenobetaine as the major arsenic compound and dimethylarsinic acid as a minor compound. These results suggest that arsenobetaine and dimethylarsinic acid can transfer from the mother bird to the eggs. To our knowledge, this is the first report on the maternal transfer of arsenic species to eggs of seabirds.