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To cope with a changing aquatic soundscape: Neuroendocrine and antioxidant responses to chronic noise stress in fish
General and Comparative Endocrinology ( IF 2.7 ) Pub Date : 2021-09-20 , DOI: 10.1016/j.ygcen.2021.113918
Ying-Jey Guh , Yung-Che Tseng , Yi-Ta Shao

Anthropogenic underwater noises that change aquatic soundscapes represent an important issue in marine conservation. While it is evident that strong underwater acoustic pollutants may cause significant damage to fish at short ranges, the physiological effects of long-term exposure to relatively quiet but continuous noise are less well understood. Here, we present a summary of the known impacts of long-term underwater noise on hypothalamic-pituitary-interrenal (HPI) axis-mediated physiological responses, oxidant/antioxidant balance, and neurotransmitter regulation in fish. Cortisol is known to play a central role in physiological stress response, most often as a mediator of acute response. However, recent research indicates that noise exposure may also induce chronic corticosteroid responses, which involve increased rates of cortisol turnover. Moreover, continuous noise affects oxidative stress and antioxidant systems in vertebrates and fish, suggesting that oxidative species may mediate some noise-induced physiological responses and make these systems valuable noise stress markers. Lastly, noise stress is also known to affect neurotransmitters in the brain that may cause neurophysiological and behavioral changes. The neurochemical mechanisms underlying observed behavioral disorders in fish after exposure to changing acoustic environments are a topic of active research. Overall, a growing body of evidence suggests that chronic noise pollution could be a threat to fish populations. In future work, systematic and comparative investigations into long-term and transgenerational adaptive neuronal and metabolic responses to noise will be important to understand the physiological patterns and dynamics of noise response relevant to fish conservation.



中文翻译:

应对不断变化的水生音景:鱼类慢性噪音应激的神经内分泌和抗氧化反应

改变水生声景的人为水下噪声是海洋保护的一个重要问题。虽然很明显,强烈的水声污染物可能在短距离内对鱼类造成重大损害,但长期暴露在相对安静但持续的噪音中的生理影响却鲜为人知。在这里,我们总结了长期水下噪声对鱼类下丘脑-垂体-肾间 (HPI) 轴介导的生理反应、氧化剂/抗氧化剂平衡和神经递质调节的已知影响。已知皮质醇在生理应激反应中发挥核心作用,最常作为急性反应的介质。然而,最近的研究表明,噪音暴露也可能诱发慢性皮质类固醇反应,这涉及皮质醇周转率的增加。此外,持续的噪声影响脊椎动物和鱼类的氧化应激和抗氧化系统,这表明氧化物种可能介导一些噪声引起的生理反应,并使这些系统成为有价值的噪声应激标记。最后,众所周知,噪音压力会影响大脑中的神经递质,这可能会导致神经生理学和行为变化。在暴露于不断变化的声学环境后观察到的鱼类行为障碍的神经化学机制是一个积极研究的主题。总体而言,越来越多的证据表明,慢性噪音污染可能对鱼类种群构成威胁。在以后的工作中,

更新日期:2021-09-29
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