Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
CESAM - Centre for Environmental and Marine Studies, Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
Mar Pollut Bull. 2021 Jul;168:112411. doi: 10.1016/j.marpolbul.2021.112411. Epub 2021 Apr 28.
Nucella lapillus imposex has been monitored in Ria de Aveiro (Portugal) in order to understand the evolution of organotin (OT) pollution after the EU ban on OT-based antifouling systems (OT-AFS). A rapid decrease of imposex occurred, but a countercurrent tendency upsurged recently (2018-2019) with a slight increase of imposex at some sites, instead of a continuous decline towards a complete recovery. In 2018 the vas deferens sequence index ranged between 0.6 and 1.0 across stations and the percentage of females with imposex varied from 63 to 100%. In 2019 these parameters varied between 0.4 and 1.0 and 37-100%, while the concentration of butyltins (TBT, DBT, MBT) in the dogwhelk tissues were < 1 ng Sn g-1 dw. Although N. lapillus imposex levels are low they are indicative of OT pollution. The full recovery of N. lapillus imposex in the future is uncertain and a cause for concern.
为了了解欧盟禁止使用有机锡（OT）基防污系统（OT-AFS）后有机锡（OT）污染的演变情况，对葡萄牙阿威罗河口（Ria de Aveiro）的珠带拟石鳖（Nucella lapillus）进行了性畸变监测。性畸变出现了快速下降，但最近（2018-2019 年）出现了相反的趋势，一些地点的性畸变略有增加，而不是朝着完全恢复的方向持续下降。2018 年，各站位的输精管序列指数在 0.6 到 1.0 之间变化，有性畸变的雌性比例在 63%到 100%之间变化。2019 年，这些参数在 0.4 到 1.0 之间变化，有性畸变的比例在 37%到 100%之间变化，而珠带拟石鳖组织中的丁基锡（TBT、DBT、MBT）浓度<1ng Sn/g dw。尽管珠带拟石鳖的性畸变水平较低，但它们表明存在有机锡污染。珠带拟石鳖性畸变的完全恢复尚不确定，令人担忧。
