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A mesocosm experiment investigating the effects of substratum quality and wave exposure on the survival of fish eggs

机译：介观实验研究基质质量和波浪暴露对鱼卵存活的影响

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摘要

In a mesocosm experiment, the attachment of bream (Abramis brama) eggs to spawning substrata with and without periphytic biofilm coverage and their subsequent survival with and without low-intensity wave exposure were investigated. Egg attachment was reduced by 73% on spawning substrata with a natural periphytic biofilm, compared to clean substrata. Overall, this initial difference in egg numbers persisted until hatching. The difference in egg numbers was even increased in the wave treatment, while it was reduced in the no-wave control treatment. Exposure to a low-intensity wave regime affected egg development between the two biofilm treatments differently. Waves enhanced egg survival on substrata without a biofilm but reduced the survival of eggs on substrata with biofilm coverage. In the treatment combining biofilm-covered substrata and waves, no attachedrneggs survived until hatching. In all treatments, more than 75% of the eggs became detached from the spawning substrata during the egg incubation period, and <1% of these detached eggs survived within the substratum interstices. Hence, detached eggs contributed little to the reproductive success we observed. The implications of these results on the spawning success of fish species that use freshly inundated spawning substrata in shallow waters are discussed.
机译：在中观实验中，研究了鲷鱼卵在附生生物膜覆盖和不附生的情况下在产卵基质上的附着情况，以及在有和没有低强度波照射下它们的存活情况。与干净的基质相比，使用天然植物周围生物膜产卵的基质的卵附着减少了73％。总体而言，卵数的最初差异一直持续到孵化。波动处理中卵数差异甚至增加，而无波动控制处理中卵数差异减小。在两种生物膜处理之间，暴露于低强度波浪状态对卵发育的影响不同。波浪增强了没有生物膜的基质在卵上的存活率，但降低了生物膜覆盖的卵在基质上的存活率。在结合生物膜覆盖的基质和波浪的处理中，直到孵化，没有附着的细菌存活下来。在所有处理中，卵孵化期间超过75％的卵从产卵底层脱离，而这些脱离的卵中只有不到1％在基质间隙中存活。因此，分离的卵对我们观察到的繁殖成功几乎没有贡献。讨论了这些结果对使用浅水区新鲜淹没的产卵底层鱼类的产卵成功的影响。

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  • 来源
    《Aquatic Sciences》 |2010年第4期|p.509-517|共9页
  • 作者

    Stefan Stoll; Wolfgang Nikolaus Probst; Reiner Eckmann; Philipp Fischer;

  • 作者单位

    Limnological Institute, University of Konstanz, 78457 Constance, Germany Department of Limnology and Conservation, Research Institute Senckenberg, 63571 Gelnhausen, Germany;

    rnLimnological Institute, University of Konstanz, 78457 Constance, Germany Johann Heinrich von Thuenen-Institute of Baltic Sea Fisheries, Alter Hafen Sued 2, 18069 Rostock, Germany;

    rnLimnological Institute, University of Konstanz, 78457 Constance, Germany;

    Limnological Institute, University of Konstanz, 78457 Constance, Germany Alfred-Wegener-Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Kurpromenade 201, 27498 Helgoland, Germany;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    common bream abramis brama; spring water level increase; periphytic biofilm; surface waves; egg attachment; egg survival;

    机译：常见的a鱼春季水位上升;周围生物膜表面波鸡蛋附件;卵子存活;

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