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First report of lytic and lysogenic viral production rates in the vicinity of fish farms (Mediterranean Sea)

机译：第一次报告裂变和杀死鱼类农场附近的病毒生产率（地中海）

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摘要

The vital role of viruses in organic matter recirculation has been rarely studied in the coastal zone and never before in aquaculture areas. In this study, we examine for the first time viral lytic and lysogenic production in the vicinity of fish farms in the Mediterranean Sea. Viral production rates were determined based on the viral reduction approach at two impacted stations (including two downstream distances from cages, i.e. 50 and 100 m, and various depths in the water column, i.e. from the surface down to 50 m) and one control site. We highlight that lytic production rates were significantly higher at 50 and 100 m distances from the cages compared to the control. Maximum levels (up to 1.1 × 10~7 released virus-like particles mL~(-1) h~(-1)) were seen at the bottom waters of the impacted sites. Interestingly, lytic production was significantly correlated with the concentrations of chlorophyll a, phaeophytin and paniculate organic phosphorus, confirming the role of primary producers in fuelling prokaryotic, thus viral activity too. On the other hand, lysogenic production was not correlated with any environmental variable examined here, and did not differ between stations. We propose that viruses, acting in parallel to grazers and dilution processes, may lead to extensive "disappearance" of suspended paniculate matter that is produced due to nutrient additions near fish cages. Further, we provide insights into the possibly-involved mechanisms of this viral activity.
机译：病毒在有机质再循环中的重要作用很少在沿海地区进行，从未在水产养殖区域之前。在这项研究中，我们在地中海的鱼类农场附近检查了第一次病毒裂解和溶血性生产。基于两个受影响的站的病毒还原方法确定病毒性生产率（包括来自笼子的两个下游距离，即50和100μm，水柱中的各种深度，即从表面到50米）和一个控制部位。与对照相比，我们强调，卢比生产率在50和100米的距离下明显高于50和100米。在受冲击位置的底部水域中看到最大水平（最高1.1×10〜7释放的病毒样颗粒ml〜（-1））。有趣的是，裂解产量与叶绿素A，Phaeophytin和群体的浓度有显着相关，确认初级生产者在促进原发性原发性的作用，因此也是病毒活性。另一方面，溶血性生产与此处检查的任何环境变量没有相关，并且在车站之间没有差异。我们提出，与格拉克斯和稀释过程平行起来的病毒可能导致由于鱼笼附近的营养添加而产生的悬浮的胰腺物质的广泛“失踪”。此外，我们提供了对该病毒活动可能涉及的机制的见解。

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    《Oceanographic Literature Review》 |2021年第7期|1594-1594|共1页
  • 作者

    A. Tsiola; I. Koutmanis; P. Pitta; M. Tsapakis;

  • 作者单位

    Hellenic Centre for Marine Research Institute of Oceanography Ex American Base Gour-nes Heraklion Crete 71003 Greece;

    Hellenic Centre for Marine Research Institute of Oceanography Ex American Base Gour-nes Heraklion Crete 71003 Greece;

    Hellenic Centre for Marine Research Institute of Oceanography Ex American Base Gour-nes Heraklion Crete 71003 Greece;

    Hellenic Centre for Marine Research Institute of Oceanography Ex American Base Gour-nes Heraklion Crete 71003 Greece;

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