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Comparison of Aerobic Scope for Metabolic Activity in Aquatic Ectotherms With Temperature Related Metabolic Stimulation: A Novel Approach for Aerobic Power Budget

机译：具有温度相关代谢刺激的水生电子体中有氧代谢活动的有氧范围的比较：有氧功率预算的一种新方法

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Considering that swim-flume or chasing methods fail in the estimation of maximum metabolic rate and in the estimation of Aerobic Scope (AS) of sedentary or sluggish aquatic ectotherms, we propose a novel conceptual approach in which high metabolic rates can be obtained through stimulation of organism metabolic activity using high and low non-lethal temperatures that induce high (HMR) and low metabolic rates (LMR), This method was defined as TIMR: Temperature Induced Metabolic Rate, designed to obtain an aerobic power budget based on temperature-induced metabolic scope which may mirror thermal metabolic scope (TMS = HMR—LMR). Prior to use, the researcher should know the critical thermal maximum (CT max) and minimum (CT min) of animals, and calculate temperature TIMR max (at temperatures −5–10% below CT max) and TIMR min (at temperatures +5–10% above CT min), or choose a high and low non-lethal temperature that provoke a higher and lower metabolic rate than observed in routine conditions. Two sets of experiments were carried out. The first compared swim-flume open respirometry and the TIMR protocol using Centropomus undecimalis (snook), an endurance swimmer, acclimated at different temperatures. Results showed that independent of the method used and of the magnitude of the metabolic response, a similar relationship between maximum metabolic budget and acclimation temperature was observed, demonstrating that the TIMR method allows the identification of TMS. The second evaluated the effect of acclimation temperature in snook, semi-sedentary yellow tail (Ocyurus chrysurus), and sedentary clownfish (Amphiprion ocellaris), using TIMR and the chasing method. Both methods produced similar maximum metabolic rates in snook and yellowtail fish, but strong differences became visible in clownfish. In clownfish, the TIMR method led to a significantly higher TMS than the chasing method indicating that chasing may not fully exploit the aerobic power budget in sedentary species. Thus, the TIMR method provides an alternative way to estimate the difference between high and low metabolic activity under different acclimation conditions that, although not equivalent to AS may allow the standardized estimation of TMS that is relevant for sedentary species where measurement of AS via maximal swimming is inappropriate.
机译：考虑到游泳水道或追逐方法无法估计久坐或缓慢水生等温线的最大代谢率和有氧范围（AS），我们提出了一种新颖的概念性方法，通过刺激刺激可以获得高代谢率使用高和低非致死温度诱导高（HMR）和低代谢率（LMR）的生物代谢活动，此方法定义为TIMR：温度诱导的代谢率，旨在基于温度诱导的代谢获得有氧功率预算可以反映热代谢范围的范围（TMS = HMR-LMR）。在使用之前，研究人员应该知道动物的临界热最大值（CT max）和最小值（CT min），并计算温度TIMR max（在比CT max低−5–10％的温度下）和TIMR min（在+5温度下） –比CT min高–10％），或选择较高和较低的非致死温度，从而引起代谢率高于或低于常规情况。进行了两组实验。首次比较了使用不同温度适应的耐力游泳者Undecimalis Centroomus undecimalis（snook）的游泳水箱开放式呼吸测量仪和TIMR协议。结果表明，与所使用的方法和代谢反应的大小无关，可以观察到最大代谢预算与适应温度之间的相似关系，这表明TIMR方法可以识别TMS。第二种方法使用TIMR和追赶方法评估了驯化温度对斯诺克，半固定黄尾鱼（Ocyurus chrysurus）和久坐小丑鱼（Amphiprion ocellaris）的影响。两种方法在斯诺克和yellow鱼中产生的最大代谢率相似，但是在小丑鱼中却看到了明显的差异。在小丑鱼中，TIMR方法导致的TMS明显高于追逐方法，这表明追逐可能无法充分利用久坐物种的有氧功率预算。因此，TIMR方法提供了另一种方法来估算在不同适应条件下高代谢活性和低代谢活性之间的差异，尽管它不等同于AS，但可以通过与通过久坐游泳测量AS的久坐物种相关的TMS进行标准化估算。是不合适的。

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