Adaptation to life in aeolian sand: how the sandfish lizard, Scincus scincus, prevents sand particles from entering its lungs.
Adaptation to life in aeolian sand: how the sandfish lizard, Scincus scincus, prevents sand particles from entering its lungs.
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DOI：
10.1242/jeb.138107
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发表时间：
2016-11-15
期刊：
影响因子：
--
通讯作者：
Baumgartner W
中科院分区：
文献类型：
--
作者：
Stadler AT;Vihar B;Günther M;Huemer M;Riedl M;Shamiyeh S;Mayrhofer B;Böhme W;Baumgartner W
沙鱼蜥蜴，Scincus Scincus（鳞目：沙鱼科），几乎一生都在风沙中度过，只有在觅食、排便和交配时才会浮出水面。目前尚不清楚这种动物是如何在被埋在厚厚的沙子下而不让沙粒进入其呼吸器官的情况下呼吸的。在这项工作中，我们将生物学研究、计算计算和物理实验相结合来理解这一现象。我们在详细的组织学分析的基础上提出了上呼吸道系统的三维模型。该模型的3d打印版本结合特征通风模式进行了计算计算和流体力学实验。通过计算速度场，我们发现鼻腔前部有粘液和纤毛的地方速度急剧下降。用3d打印模型进行的实验验证了计算结果：粒子，如果存在的话，只在与计算结果相同的区域被发现。我们假设沙鱼有一个空气动力学过滤系统；更具体地说，呼吸通道的特征形态加上特定的通气模式阻止颗粒进入肺部。沙鱼S. scincus几乎一生都生活在细沙中。我们发现它有一个空气动力学过滤系统，可以防止沙粒进入肺部。
The sandfish lizard, Scincus scincus (Squamata: Scincidae), spends nearly its whole life in aeolian sand and only comes to the surface for foraging, defecating and mating. It is not yet understood how the animal can respire without sand particles entering its respiratory organs when buried under thick layers of sand. In this work, we integrated biological studies, computational calculations and physical experiments to understand this phenomenon. We present a 3D model of the upper respiratory system based on a detailed histological analysis. A 3D-printed version of this model was used in combination with characteristic ventilation patterns for computational calculations and fluid mechanics experiments. By calculating the velocity field, we identified a sharp decrease in velocity in the anterior part of the nasal cavity where mucus and cilia are present. The experiments with the 3D-printed model validate the calculations: particles, if present, were found only in the same area as suggested by the calculations. We postulate that the sandfish has an aerodynamic filtering system; more specifically, that the characteristic morphology of the respiratory channel coupled with specific ventilation patterns prevent particles from entering the lungs. The sandfish S. scincus spends nearly its whole life in fine desert sand. We discovered that it has an aerodynamic filtering system to prevent sand particles from entering the lungs.
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影响因子：
2.1
作者：
Belusic, Gregor;Zupancic, Gregor
通讯作者：
Zupancic, Gregor
影响因子：
--
作者：
STEBBINS, RC
通讯作者：
STEBBINS, RC
影响因子：
2.9
作者：
Stebbins, RC
通讯作者：
Stebbins, RC
影响因子：
2.8
作者：
Dorgan, Kelly M.
通讯作者：
Dorgan, Kelly M.
影响因子：
1.6
作者：
Klein, W;Reuter, C;Perry, SF
通讯作者：
Perry, SF