The effect of various metals on Gyrodactylus salaris (Platyhelminthes, Monogenea) infections in Atlantic salmon (Salmo salar)
The effect of various metals on Gyrodactylus salaris (Platyhelminthes, Monogenea) infections in Atlantic salmon (Salmo salar)
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DOI：
10.1017/s0031182003004396
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发表时间：
2004-02
期刊：
影响因子：
2.4
通讯作者：
A. B. Poléo;Joachim Schjolden;Haakon Hansen;T. Bakke;T. Mo;B. O. Rosseland;E. Lydersen
中科院分区：
文献类型：
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作者：
A. B. Poléo;Joachim Schjolden;Haakon Hansen;T. Bakke;T. Mo;B. O. Rosseland;E. Lydersen
研究了大西洋鲑鱼（Salmo salar）幼鲑（年龄0+）感染了外寄生虫salrodactylus salaris，并将其暴露于4种不同浓度的铝（Al）、铜（Cu）、锌（Zn）、铁（Fe）和锰（Mn）水溶液中。暴露于Zn和al的鲑鱼中，salaris感染与金属浓度呈负相关。在zn -实验中，4种浓度均降低了沙蚕的感染率，而在al -实验中，沙蚕的感染率在最低浓度下没有下降。实验期间，各对照组和Cu、Fe、Mn暴露组的月老星数量均不断增加。然而，在最高浓度下，铜似乎损害了血吸虫感染的生长。结果表明，水中Al和Zn是控制病原菌分布和丰度的重要环境因子。其他污染物也可能对黄颡鱼的发生有影响。最后，结果表明，水铝和锌对寄生虫的作用比对鲑鱼宿主的作用更强，这表明这两种金属可能被用作杀虫剂来控制像salaris这样的体外寄生虫。
Atlantic salmon (Salmo salar) parr (age 0+), infected by the ectoparasite Gyrodactylus salaris, were exposed to aqueous aluminium (Al), copper (Cu), zinc (Zn), iron (Fe) and manganese (Mn), at 4 different concentrations. There was a negative correlation between G. salaris infections and metal concentrations in both Zn- and Al-exposed salmon. In the Zn-experiment, all 4 concentrations tested caused a decrease in the G. salaris infections, while in the Al-experiment the G. salaris infection did not decline at the lowest concentration. The number of G. salaris increased continuously during the experiments in all control groups, and in all groups exposed to Cu, Fe and Mn. At the highest concentration, however, copper seemed to impair the growth of G. salaris infection. The results show that aqueous Al and Zn are environmental factors of importance controlling the distribution and abundance of the pathogen G. salaris. Other pollutants might also have an influence on the occurrence of G. salaris. Finally, the results demonstrate that aqueous Al and Zn have a stronger effect on the parasite than on the salmonid host, suggesting that both metals may be used as a pesticide to control ectoparasites such as G. salaris.