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首页> 外文期刊>The Journal of Experimental Biology >Burrow air phase maintenance and respiration by the mudskipper Scartelaos histophorus (Gobiidae : Oxudercinae)
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Burrow air phase maintenance and respiration by the mudskipper Scartelaos histophorus (Gobiidae : Oxudercinae)

机译：泥skScartelaos histophorus（Gobiidae：Oxudercinae）维持洞穴的呼吸和呼吸

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摘要

A laboratory burrow and mudflat system was used to examine aspects of burrow air-phase maintenance and utilization by the amphibious mudskipper Scartelaos histophorus. While confined to its burrow during simulated 'high tide', this species respires both aquatically and aerially, in the latter case utilizing an air phase it had established by transporting air into the burrow during simulated 'low tide'. Over the course of 'high-tide' confinement, burrow-water P-O2 declines, making the air phase more important for respiration; the burrow-water O-2 tension eliciting air-phase respiration is 4.8 +/- 0.2 kPa. At 'low tide', when the fish has access to air, it deposits new air in the air phase by transporting gulps into the burrow and releasing them. Observed air-deposition rates for both males and females were 12.3 +/- 4.5 trips h(-1). All of the fish tested (N=8 individuals + 2 pairs) deposited air and responded to experimental air-phase withdrawal by replacing the air (72 of 74 tests, 97.3%). Also, repeated tests with one fish showed that experimental reduction of the air-phase P-O2 by mixing with N-2 elicited a gas-expelling behavior at O-2 levels less than 10.3 kPa. At O-2 levels greater than 10.3 kPa, the fish left the air phase intact and added to it by depositing surface air.
机译：一个实验室的洞穴和泥滩系统被用来检查两栖泥skScartelaos histophorus对洞穴空气的维护和利用方面。虽然该物种在模拟“涨潮”期间被限制在洞穴中，但它们在水上和空中呼吸，在后一种情况下，利用了通过在模拟“低潮”期间将空气输送到洞穴中而建立的空气相。在“高潮期”封闭过程中，洞穴水中的P-O2下降，这使空气相对于呼吸作用更为重要。引起空气呼吸的洞穴水O-2张力为4.8 +/- 0.2 kPa。在“退潮”时，当鱼可以接触到空气时，它会通过将g运到洞穴中并释放它们而在空中沉积新的空气。男性和女性的观察到的空气沉积率均为12.3 +/- 4.5次h（-1）。所有测试的鱼（N = 8个体+ 2对）都沉积了空气，并通过更换空气对实验性的气相撤除做出了响应（74个测试中的72个，占97.3％）。而且，对一条鱼的重复测试表明，通过与N-2混合来实验降低空气中的P-O2会在O-2含量小于10.3 kPa时引起气体排泄行为。当O-2含量大于10.3 kPa时，鱼保持完整的空气相并通过沉积地面空气将其添加。

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