Copepod feeding currents: Food capture at low Reynolds number1
Copepod feeding currents: Food capture at low Reynolds number1
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桡足类进食电流：低雷诺数下的食物捕获1
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
J. Rudi Strickier
中科院分区：
文献类型：
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作者：
M. A. R. Koehl;J. Rudi Strickier
高速运动画面显示，在喂食类鱿鱼桡足类动物的周围，染料流显示，这些重要的浮游食草动物不会像前面描述的那样，将藻类从水中滤出。相反，桡足类动物扇动四对进食附属物来推动水从自己身边流过，并用它的第二个上颌骨主动捕捉含有食物颗粒的水。毛桉（Eucalanus pileatus）的摄食附属物在雷诺数仅为10−2至10−1的情况下工作。在进食的桡足动物的粘性世界里，水流是层流的，刚毛的附属物像固体桨而不是张开的耙子，颗粒既不能被舀起也不能留下，因为附属物上附着着厚厚的水层，当动物停止拍打附属物时，水和颗粒的运动立即停止。
High-speed motion pictures of dye streams around feeding calanoid copepods revealed that these important planktonic herbivores do not strain algae out of the water as previously described. Rather, a copepod flaps four pairs of feeding appendages to propel water past itself and uses its second maxillae to actively capture parcels of that water containing food particles. The feeding appendages of Eucalanus pileatus operate at Reynolds numbers of only 10−2 to 10−1. In the viscous world of a feeding copepod, water flow is laminar, bristled appendages behave as solid paddles rather then open rakes, particles can neither be scooped up nor left behind because appendages have thick layers of water adhering to them, and water and particle movement stops immediately when an animal stops beating its appendages.