Aerobic scope predicts dominance during early life in a tropical damselfish
Aerobic scope predicts dominance during early life in a tropical damselfish
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DOI：
10.1111/1365-2435.12296
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发表时间：
2014-12-01
影响因子：
5.2
通讯作者：
McCormick, Mark I.
中科院分区：
文献类型：
--
作者：
Killen, Shaun S.;Mitchell, Matthew D.;McCormick, Mark I.
一系列生理特征与社会等级中的攻击性和支配性有关，但个体有氧能力在促进攻击性方面的作用很少被研究。此外，先前观察到的个人的代谢率和侵略水平之间的联系可能是依赖于上下文和调制的因素，如社会压力和fcompetitor熟悉。我们研究了这些问题，在少年安汶雀鲷，Pomacentrus amboinensis，这显示在珊瑚礁定居期间的领土种内竞争。在双人优势赛开始前，用流速呼吸仪测定个体的常规代谢率、有氧范围（AS）和无氧能力。比赛结束后，鱼被单独测量代谢率，同时与他们以前的竞争对手或相邻的透明呼吸计陌生人相互作用。在竞技场比赛中，AS与攻击性和优势性相关，而常规代谢率和无氧代谢能力与优势性无关。比赛后，下属表现出代谢率的上升和可用的AS减少，可能是由于社会压力。优势增加代谢率在以前的竞争对手的存在下，可能是由于层次结构维护的压力。代谢率在侵略性的相互作用没有接近，在力竭运动中测量，这表明个人没有充分利用他们的AS在侵略。然而，一个更大的AS可能会允许更快的赛后恢复。这些结果表明，AS和优势之间的联系，在种内竞争的领土。因此，选择AS可以遵循，或者间接地通过与其他性状的相关性影响资源持有潜力，或直接如果AS进行重要的领土收购或持有的好处，如增强能力，以科普社会引起的压力。10.1111/（ISSN）1365-2435
A range of physiological traits are linked with aggression and dominance within social hierarchies, but the role of individual aerobic capacity in facilitating aggression has seldom been studied. Further, links previously observed between an individual's metabolic rate and aggression level may be context dependent and modulated by factors such as social stress and fcompetitor familiarity. We examined these issues in juvenile Ambon damselfish, Pomacentrus amboinensis, which display intraspecific competition for territories during settlement on coral reefs. Individuals were measured for routine metabolic rate, aerobic scope (AS) and anaerobic capacity using intermittent-flow respirometry before dyadic dominance contests. Post-contest, fish were measured for metabolic rate in isolation and while interacting with their previous competitor or a stranger in adjacent transparent respirometers. In arena contests, AS was correlated with aggression and dominance, while routine metabolic rate and anaerobic capacity were not related to dominance. Post-contest, subordinates showed a rise in metabolic rate and decrease in available AS, presumably due to social stress. Dominants increased metabolic rate in the presence of a previous competitor, possibly due to the stresses of hierarchy maintenance. Metabolic rate during aggressive interactions did not approach that measured during exhaustive exercise, suggesting individuals do not fully utilise their AS during aggression. A greater AS may, however, allow faster post-contest recovery. These results demonstrate a link between AS and dominance during intraspecific competition for territory. Selection on AS could therefore follow, either indirectly through correlations with other traits influencing resource-holding potential, or directly if AS carries benefits important for territory acquisition or holding, such as an enhanced capacity to cope with socially induced stress. 10.1111/(ISSN)1365-2435