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首页> 外文期刊>Bulletin of the European Association of Fish Pathologists >Nitrate pollution, but not fin clipping, reduces ecto-symbiont abundance on three-spined sticklebacks
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Nitrate pollution, but not fin clipping, reduces ecto-symbiont abundance on three-spined sticklebacks

机译：硝酸盐污染而不是翅片削除可减少三轴棘刺背上的共生共生体的丰度。

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摘要

Fin clipping is unlikely to be a major health issue, but their effects on small fish under variable environmental conditions have not been fully tested. In this study, we explored how nitrate pollution and fin-clipping affect the natural ecto-symbiont community of three-spined sticklebacks Gasterosteus aculeatus. Our results showed that fin clipping has a neutral effect on the abundance of the ecto-commensal Trichodina spp. and the well-known pathogen Gyrodactylus gasterostei, and that such an effect is not influenced by a 4-week exposure to 50 mg NO3- L-1. This nitrate level, however, markedly reduced the abundance of these two ecto-symbionts compared to controls at < 10 mg NO3- L-1. In conclusion, this study suggests that fin-clipping is a valid non-destructive method for tissue sampling in fish, and that an ecologically relevant nitrate concentration can protect fish against some species of Trichodina and Gyrodactylus.
机译：削鳍不可能是一个主要的健康问题，但是在各种环境条件下，它们对小鱼的影响尚未得到充分测试。在这项研究中，我们探索了硝酸盐污染和鳍状鳍片如何影响三棘刺背G Gasterosteus aculeatus的自然共生共生体群落。我们的研究结果表明，鳍片削皮对外生殖毛癣菌的丰度有中性影响。以及众所周知的病原体Gerrodactylus gasterostei，并且这种效果不受暴露于50 mg NO3- L-1 4周的影响。然而，与硝酸盐含量低于10 mg NO3- L-1的对照相比，该硝酸盐水平显着降低了这两种胞外共生菌的丰度。总之，这项研究表明，固定鳍片是一种用于鱼类组织采样的有效非破坏性方法，并且具有生态意义的硝酸盐浓度可以保护鱼类免受某些种类的毛线虫和回旋线虫的侵害。

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