Méndez Nuria
Laboratorio de Invertebrados Bentónicos, Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, UNAM, Apdo. Postal 811, Mazatlán, Sinaloa 82000, Mexico.
Environ Pollut. 2006 Jan;139(1):118-24. doi: 10.1016/j.envpol.2005.04.027. Epub 2005 Aug 3.
The cosmopolitan deposit-feeding polychaete Capitella is widely used as an indicator of organic pollution and plays an important role in waste recycling at aquaculture sites. Teflubenzuron is currently employed by salmon farms as an in-feed compound to control ectoparasite infestations. Its occurrence in sediments could pose a hazard to local sediment infauna. A bioassay to investigate the effects of exposing Capitella sp I and Capitella sp B to sediment spiked with environmentally relevant concentrations of teflubenzuron (8.4, 25 and 41.8 microg/g dry wt. sediment) is described. No mortality was recorded for Capitella sp I, but increasing teflubenzuron concentrations significantly reduced egestion rates. Capitella sp B exhibited mortality, although egestion was not affected. These results using Capitella spp. indicated that teflubenzuron could affect the rate of sediment processing by polychaetes close to fish farms treated with this compound. Further studies are recommended to assess the potential of contaminants in aquaculture wastes.
世界性的食沉积物多毛纲小头虫广泛用作有机污染的指示生物，在水产养殖场所的废物循环利用中发挥着重要作用。目前，鲑鱼养殖场使用氟苯脲作为饲料添加剂来控制体外寄生虫感染。其在沉积物中的出现可能对当地沉积物底栖动物构成危害。本文描述了一项生物测定，以研究将小头虫I型和小头虫B型暴露于添加了环境相关浓度氟苯脲（8.4、25和41.8微克/克干重沉积物）的沉积物中的影响。小头虫I型未记录到死亡，但氟苯脲浓度的增加显著降低了排粪率。小头虫B型出现了死亡，尽管排粪未受影响。使用小头虫属的这些结果表明，氟苯脲可能会影响使用该化合物处理过的养鱼场附近多毛纲动物对沉积物的处理速率。建议进一步开展研究，以评估水产养殖废物中污染物的潜在影响。
