Biorheological properties of intertidal organic fluff on mud flats and its modification of gill ventilation in buried sole Solea solea
Biorheological properties of intertidal organic fluff on mud flats and its modification of gill ventilation in buried sole Solea solea
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DOI：
10.1007/s00227-006-0340-2
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发表时间：
2007
期刊：
影响因子：
2.4
通讯作者：
I. Jenkinson;G. Claireaux;P. Gentien
中科院分区：
文献类型：
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作者：
I. Jenkinson;G. Claireaux;P. Gentien
潮间带泥滩是许多鱼类幼鱼的重要繁殖地。然而，它们正越来越多地用于养殖双壳软体动物，这些软体动物产生大量覆盖在泥上的有机“绒毛”。鱼类，如唯一，Solea solea，隐藏在这个绒毛从潜在的捕食者，但呼吸绒毛所消耗的能量可能是高的，由于其生物流变特性。我们发明了一种鱼的粘度计。它采用了新鲜杀死的鱼作为粘度计，我们开发它来测量流体和悬浮液的流变特性，包括绒毛，在规模包括那些在鳃通风。我们已经表明，绒毛的流变行为是接近的屈服应力强烈依赖于颗粒有机物浓度（[POM]）的凝胶。这使我们能够模拟绒毛通过鳃通道在生活的唯一作为鱼的大小和[POM]的函数，显示在26-g的唯一，绒毛将在[POM]值为3.2 g l-1时减半，并在3.4时停止。
Intertidal mudflats are important nursery grounds for juveniles of many fish species. However, they are being used increasingly to farm bivalve molluscs, which produce large amounts of organic “fluff”, overlying the mud. Fish such as sole,Solea solea, hide in this fluff from potential predators, but the energy consumed by respiring the fluff may be high due to its biorheological properties. We developed an ichthyoviscometer. It incorporates a freshly killed fish as a viscometer, and we developed it to measure the rheological properties of fluids and suspensions, including fluff, at scales encompassing those in gill ventilation. We have shown that the rheological behaviour of fluff is close to that of a gel with a yield stress strongly dependent on particulate organic matter concentration ([POM]). This has allowed us to model fluff flow through the gill channels in living sole as a function of fish size and [POM], showing that in a 26-g sole, fluff would halve flow at a [POM] value of 3.2 g l−1, and stop it at 3.4.