Unit of Aquaculture and Cryobiology, Department of Zoology, University of Madras, Guindy Campus, Chennai 600 025, India.
Chemosphere. 2010 May;79(9):922-7. doi: 10.1016/j.chemosphere.2010.03.023. Epub 2010 Apr 8.
Organotin compounds particularly tributyltin (TBT) has been used as an antifouling biocides. In the present investigation, effects of TBT on the embryonic development, growth, hatchability and hatching success of eggs exposed to TBT were studied in both control and treated groups of the freshwater prawn (brooder) Macrobrachium rosenbergii. Three concentrations viz. 0.78ppm, 1.56ppm and 3.12ppm were selected for treatment. TBT at 3.12ppm concentration delayed the embryonic development and significantly reduced the hatchability of eggs as well. However, there were no significant changes obtained in the embryonic development and hatchability at the lower concentration (0.78ppm) of TBT. Whereas TBT at 1.56ppm affected the embryogenesis in toto. Interestingly, the control groups showed normal development such as elongation of body, formation of eyestalk and internal organs. On the other hand, the treated groups showed impaired embryonic development with reduced body growth. Interestingly, the embryo exposed to TBT showed absence of eyestalk and internal organs. Thus, TBT has significantly retarded the embryonic development in the freshwater prawn M. rosenbergii.
有机锡化合物，特别是三丁基锡（TBT），已被用作防污杀生剂。在本研究中，研究了 TBT 对淡水虾（幼体）罗氏沼虾胚胎发育、生长、孵化率和孵化成功率的影响，分别在对照组和 TBT 处理组中进行。选择了三个浓度，即 0.78ppm、1.56ppm 和 3.12ppm 进行处理。3.12ppm 的 TBT 浓度延迟了胚胎发育，并显著降低了卵的孵化率。然而，在较低浓度（0.78ppm）的 TBT 下，胚胎发育和孵化率没有显著变化。而 1.56ppm 的 TBT 则影响了胚胎的整体发生。有趣的是，对照组显示出正常的发育，如身体的伸长、眼柄和内部器官的形成。另一方面，处理组显示出胚胎发育受损，身体生长减少。有趣的是，暴露于 TBT 的胚胎显示出没有眼柄和内部器官。因此，TBT 显著延缓了罗氏沼虾 M. rosenbergii 的胚胎发育。
