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Phytoplankton odor modifies the response of Euphausia superba to flow

机译:Phytoplankton气味改变euphausia superba流动的反应

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摘要

Antarctic krill, Euphausia superba, are critical components of the Antarctic food web as well as important targets for conservation and management. Krill behavior has important effects on demographic properties and aggregation characteristics, but remains incompletely known. Krill clearly respond to different environmental stimuli such as light, flow and chemicals, but few studies have quantified these behaviors. We examined the behavior of krill in well-quantified current speeds in a laboratory flume and examined interactions of phytoplankton odor and flow. Krill are sensitive to flow speeds as low as 1 mm s(-1), and flow polarizes krill swimming and orientation in the up-current direction. Phytoplankton odor increases the sensitivity of krill to flow, and induces area-restricted search behaviors that presumably allow krill to exploit food patches efficiently. The ability to quantify krill behavior could have important consequences for understanding demographic processes and the properties of krill aggregations.
机译:南极KRILL,Euphausia Superba是南极食品网的关键组成部分,以及保护和管理的重要目标。 KRILL行为对人口统计属性和聚合特征具有重要影响,但仍然不完全了解。克里尔清楚地应对不同的环境刺激,如光,流动和化学品,但很少有研究已经量化了这些行为。我们在实验室水槽中检查了磷虾的行为在实验室水槽中的定量电流速度,并检查了浮游植物气味和流动的相互作用。 KRill对流量速度敏感,低至1 mm S(-1),流量极化磷虾游泳和上电方向的方向。 Phytoplankton气味增加了KRILL流动的敏感性,并诱导了区域限制的搜索行为,这些行为可能允许KRILL有效地利用食物斑块。量化KRILL行为的能力可能对理解人口过程和KRILL聚集的性质具有重要影响。

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