The oxygen gain of diving insects

José Guilherme Chaui-Berlinck , José Eduardo P.W. Bicudo , Luiz Henrique Alves Monteiro
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引用次数: 15

Abstract

The gas gill of diving insects allows gas exchange with the surrounding water, thus extending diving time. Incompressible gas gills can potentially last indefinitely underwater, but compressible gas gills have a definite lifetime. Theoretical models of a dive event have reached opposite conclusions about the oxygen gain (G, the ratio between the duration of the diving event and the time that the initial oxygen content of the bubble would allow the insect to stay underwater). While some authors claim that G has a fixed value independently of the parameters of the dive (e.g. oxygen consumption rate) others claim the contrary. However, these claims are based on numerical solutions of the models. In this study we offer an analytical solution to the problem. The analysis of a model with constant area for gas exchange demonstrates that G cannot have a fixed value, for a fixed gain would imply in a PO2 inside the bubble different from the one occurring as a result of physical constraints of the gas exchange process.

潜水昆虫获得的氧气
潜水昆虫的气鳃可以与周围的水进行气体交换,从而延长潜水时间。不可压缩气鳃可能在水下无限期地存在,但可压缩气鳃有一个确定的寿命。关于潜水事件的理论模型得出了相反的结论(G,潜水事件持续时间与气泡初始含氧量允许昆虫在水下停留的时间之比)。虽然一些作者声称G有一个独立于潜水参数(如耗氧量)的固定值,但另一些人则持相反观点。然而,这些主张是基于模型的数值解。在这项研究中,我们对这个问题提供了一个分析解决方案。对气体交换的等面积模型的分析表明,G不可能有一个固定的值,因为固定的增益意味着气泡内的PO2与由于气体交换过程的物理约束而产生的PO2不同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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