Group swimming behaviour and energetics in bluegill Lepomis macrochirus and rainbow trout Oncorhynchus mykiss
Group swimming behaviour and energetics in bluegill Lepomis macrochirus and rainbow trout Oncorhynchus mykiss
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DOI：
10.1111/jfb.14641
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发表时间：
2020-12-18
影响因子：
2
通讯作者：
Coughlin, David J.
中科院分区：
文献类型：
--
作者：
Currier, Megan;Rouse, Jon;Coughlin, David J.
群体游泳规模影响鱼类的代谢能量消耗和游泳行为。其他鱼类的水动力流和涡流被认为对于游泳的能量消耗是有益的。同样，非生物障碍已被证明对虹鳟鱼 Oncorhynchus mykiss 等游泳鱼类的代谢消耗具有类似的益处。目前的研究致力于检验翻车鱼 Lepomis Macrochirus 和 O. mykiss 群体游泳时的代谢率和游泳行为。鱼在呼吸游泳隧道中进行个体和群体游泳，以确定耗氧量作为游泳鱼代谢率的代表。此外，还跟踪鱼在泳道测试室内的运动，以检查群体游泳行为。我们假设鱼类会从集体游泳中受益于新陈代谢。就 O. mykiss 而言，我们还假设群体会受益于非生物结构的存在，正如之前在单独游泳的鱼类中观察到的那样。我们的结果表明，群体大小对游泳代谢的影响具有物种特异性。虽然与单独游泳相比，L. macrochirus 在群体游泳时表现出代谢率降低，但 O. mykiss 并没有表现出群体游泳对代谢的益处。
Group swimming size influences metabolic energy consumption and swimming behaviour in fishes. Hydrodynamic flows and vortices of other fish are thought to be beneficial in terms of the energetic costs of swimming. Similarly, abiotic obstructions have been shown to have similar benefits with respect to metabolic consumption in swimming fish such as rainbow trout Oncorhynchus mykiss. The current study works to examine metabolic rates and swimming behaviours as a function of group swimming with bluegill sunfish Lepomis macrochirus and O. mykiss. Fishes were subjected to individual and group swimming in a respiratory swim tunnel to determine oxygen consumption as a proxy for the metabolic rate of swimming fish. In addition, fish movements within the swim tunnel test chamber were tracked to examine group swimming behaviour. We hypothesized that fish would benefit metabolically from group swimming. In the case of O. mykiss, we also hypothesized that groups would benefit from the presence of an abiotic structure, as has been previously observed in fish swimming individually. Our results suggest that the influence of group size on swimming metabolism is species specific. While L. macrochirus show decreased metabolic rate when swimming in a group compared to individually, O. mykiss did not show such a metabolic benefit from group swimming.