The optimal allocation of time over the dive cycle: An approach based on aerobic and anaerobic respiration
The optimal allocation of time over the dive cycle: An approach based on aerobic and anaerobic respiration
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DOI：
10.1006/anbe.1996.0129
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发表时间：
1996-06-01
期刊：
影响因子：
2.5
通讯作者：
Houston, AI
中科院分区：
文献类型：
--
作者：
Carbone, C;Houston, AI
Houston & Carbone（1992，Behav. Ecol.，3，233-262）开发了预测潜水循环期间的最佳时间分配的模型，该模型由潜水员使用有氧呼吸的假设激发。在本文中，这种方法是扩展使用模型的基础上最大限度地提高觅食所花费的时间的比例，以允许额外使用的无氧呼吸。提出了两种模型。一种是“转换”模型，假设潜水员在潜水过程中只使用两种代谢途径中的一种。该模型预测了潜水员从有氧潜水转换到无氧潜水的旅行时间（或水深）。另一种是“混合代谢”模型，它假设两种代谢途径同时混合，并预测随着水深的增加，有氧和无氧呼吸的比例会发生变化。在混合代谢模型中，食物斑块中的预测时间可以从定性上类似于以前的模型的模式，首先增加，然后随着深度减少，到一个新的模式与两个峰值。觅食时间的第二个高峰似乎主要是由无氧呼吸推动的。表面上的对应时间从类似于前一模型的模式与一个区域的突然上翘的模式与两个这样的区域。这些模型提供了深入了解目前争论的问题，潜水生理学家之间的程度，以及何时潜水员应该依靠无氧呼吸。(C)1996年动物行为研究协会
Houston & Carbone (1992, Behav. Ecol., 3, 233-262) developed models that predict the optimal allocation of time during the dive cycle motivated by the assumption that the diver uses aerobic respiration. In this paper this approach is extended using a model based on maximizing the proportion of time spent foraging to allow for the additional use of anaerobic respiration. Two models are presented. One, the 'switch' model, assumes the diver uses only one of the two metabolic pathways during a dive. This model predicts the travel time (or water depth) at which the diver switches from aerobic to anaerobic dives. Another, the 'mixed metabolism' model, assumes a simultaneous mix of the two metabolic pathways and predicts a shift in the proportional use of aerobic and anaerobic respiration with increasing water depth. In the mixed metabolism model, the predicted time in the food patch can change from a pattern qualitatively similar to the previous models, first increasing and then decreasing with depth, to a novel pattern with two peaks. The second peak in foraging time appears to be largely fuelled by anaerobic respiration. The corresponding time on the surface changes from a pattern similar to the former models with one region with an abrupt upturn to a pattern with two such regions. These models provide insights into issues currently debated among diving physiologists concerning the degree to which and when divers should rely on anaerobic respiration. (C) 1996 The Association for the Study of Animal Behaviour