克服幼年砂眼蛤蜊悬浮喂养时的水动力学挑战

2019/08/14   下载量： 0 次

方案摘要

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应用领域 生物产业
检测样本 其他
检测项目
参考标准 暂无

采用LaVision公司的DaVis软件，FASTCAM SA3 120K 单色高速相机(Photron,Tokyo, Japan)，1WLED光源，构成一套显微粒子成像测速系统。测量了砂眼蛤蜊悬浮喂养时4mmX4mm视场区域的流动速度矢量场分布。

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    We present some of the few suspension-feeding measurements and to our knowledge the first velocity-field measurements for early post-settlement juvenile bivalve clams. We verify and extend our experimental results with numerical simulations. For 1.8–2.8mm shell length Mya arenaria clams, pumping rates ranged 0.03–0.22 ul/s, inhalant siphon Reynolds numbers (Re) ranged 0.16–0.79 and mean inhalant velocities ranged 0.8–3.2mm/s. Owing to the low Re at which they pump and the small diameters of their siphons, juvenile clams are subject to unique hydrodynamic challenges, including high siphon resistance and susceptibility to refiltration. At least three features of juvenile clam siphons differentiate them from those of
adults–shorter inhalant siphon length, a more rapid increase in inhalant siphon diameter with shell length, and the presence of a prominent exhalant siphon extension. These features are probably adaptations to the challenges of suspension feeding at low Re.

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北京欧兰科技发展有限公司
金牌会员 丨 第17年
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