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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >How will increased dinoflagellate:diatom ratios affect copepod egg production? : A case study from the Baltic Sea
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How will increased dinoflagellate:diatom ratios affect copepod egg production? : A case study from the Baltic Sea

机译：鞭毛藻：硅藻比的增加将如何影响co足类卵的产量？ ：波罗的海的个案研究

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摘要

Mild winters are modifying the plankton spring bloom composition so that diatoms are decreasing and dinoflagellates increasing. We used two common spring bloom phytoplankton species, a diatom and a dinoflagellate to study the effects of changing bloom composition on the reproduction of the calanoid copepod Acartia bifilosa Giesbrecht, a dominant species in the northern Baltic Sea. Egg production was significantly higher when copepods were fed with Scrippsiella hangoei (Schiller) Larsen dinoflagellates or a mixture of Scrippsiella and Skeletonema marinoi Sarno and Zingone diatoms than when they were provided with Skeletonema only. This effect was observed despite the fact that the Skeletonema strain did not produce polyunsaturated aldehydes (PUAs) and its nutritional quality was high according to polyunsaturated fatty acid (PUFAs) and sterol measurements, and moderate according to mineral (C:N and C:P) measurements. When offered mixtures of Skeletonema and Scrippsiella, copepods ingested both, even when the other one was rare. This indicates potential positive effect of multispecies diets not verified in this study. Here we show that increasing dinoflagellate:diatom ratio might have a positive effect on copepod reproduction.
机译：温和的冬天正在改变浮游生物的春季开花成分，从而使硅藻减少而鞭毛虫增加。我们使用了两个常见的春季开花浮游植物物种，一个硅藻和一个鞭毛藻，研究了不断变化的开花成分对北波罗的海的优势物种-co足类pe足类双足类鱼类（Acartia bifilosa Giesbrecht）繁殖的影响。当co足类动物饲喂汉氏链球菌（席勒）拉鞭毛鞭毛藻或镰刀形藻和马立克氏菌Sarno和Zingone硅藻的混合物时，产卵量显着高于只提供骨骼藻。尽管事实上骨骼肌菌株不产生多不饱和醛（PUAs），并且根据多不饱和脂肪酸（PUFAs）和固醇的测定其营养质量很高，但根据矿物质（C：N和C：P适中）观察到了这种效果。 ） 测量。当提供Skeletonema和Scrippsiella的混合物时，co足类动物都会摄入它们，即使另一种很少见。这表明本研究中未证实的多种饲料的潜在积极作用。在这里我们表明，增加鞭毛藻：硅藻的比例可能对co足类繁殖有积极的影响。

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    Anu Vehmaa; Peder Larsson; Charles Vidoudez; Georg Pohnert; Marko Reinikainen; Jonna Engstrom-OEst;

  • 作者单位

    ARONIA Coastal Zone Research Team, Abo Akademi University and Novia University of Applied Sciences, Fl-10600 EkenOs, Finland;

    Department of Ecology and Environmental Sciences and Umea Marine Sciences Centre, Norrbyn, SE-91020 Hb'mefors, Sweden;

    Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, D-07743 Jena, Germany,Department of Organismic and Evolutionary Biology, Harvard University, Girguis Lab, 16 Divinity Avenue, Cambridge MA 02138, USA;

    Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, D-07743 Jena, Germany;

    Tvarminne Zoological Station, University of Helsinki, Fl-10900 Hanko, Finland;

    ARONIA Coastal Zone Research Team, Abo Akademi University and Novia University of Applied Sciences, Fl-10600 EkenOs, Finland;

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  • 正文语种 eng
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  • 关键词

    climate change; copepod egg production; diatoms; dinoflagellates; fatty acids; stoichiometry;

    机译：气候变化;足足产卵;硅藻;鞭毛藻;脂肪酸;化学计量;

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