Effects of tributyltin maternal and/or waterborne exposure on the embryonic development of the Manila clam, Ruditapes philippinarum
Effects of tributyltin maternal and/or waterborne exposure on the embryonic development of the Manila clam, Ruditapes philippinarum
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DOI：
10.1016/j.chemosphere.2005.07.047
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发表时间：
2006-05-01
期刊：
影响因子：
8.8
通讯作者：
Honjo, Tsuneo
中科院分区：
文献类型：
--
作者：
Inoue, Suguru;Oshima, Yuji;Honjo, Tsuneo
研究了三丁基锡（TBT）对菲律宾蛤仔胚胎发育的影响。在一项母体接触试验中，100只蛤蜊在20-22摄氏度下接触三丁基锡化合物三周，浓度分别为< 0.01（对照）、0.061、0.310或0.350微克/升，并测量胚胎发育成功率（正常D型幼虫与所有幼虫的比率）。雌性马尼拉蛤胚胎发育成功率与TBT浓度呈显著负相关（p < 0.001）。这些结果表明，TBT在雌蛤体内的积累降低了胚胎发育的成功率。在一项水媒接触试验中，受精卵（受精后4小时）接触三丁基锡化合物23小时，三丁基锡化合物的测量浓度分别为< 0.01（对照）、0.062、0.140、0.320或0.640微克/升。与对照组相比，所有三丁基锡化合物处理组的胚胎发育成功率也显著降低。三丁基锡化合物在雌成蛤体内积累，水媒三丁基锡化合物明显抑制蛤的繁殖成功。(c)2005爱思唯尔有限公司保留所有权利。
We examined the effect of tributyltin (TBT) on embryonic development of the Manila clam, Ruditapes philippinarum. in a maternal exposure test, 100 clams were exposed to TBT at measured concentrations of < 0.01 (control), 0.061, 0.310, or 0.350 mu g/l at 20-22 degrees C for 3 weeks, and the embryo developmental success (the ratio of normal D-larvae to all larvae) was measured. There was a significant negative correlation between embryo developmental success and TBT concentration in the female Manila clams (p < 0.001). These results indicated that TBT accumulated in the female clam decreased embryo developmental success. In a waterborne exposure test, fertilized eggs (4 h after fertilization) were exposed to TBT at measured concentrations of < 0.01 (control), 0.062, 0.140, 0.320, or 0.640 mu g/l for 23 h. Embryo developmental success was also significantly decreased in all TBT treatment groups compared with that in the control group. TBT accumulated in female adults and waterborne TBT clearly inhibit reproductive success of the clam. (c) 2005 Elsevier Ltd. All rights reserved.