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首页> 外文期刊>Polar biology >Warming, not CO_2-acidified seawater, alters otolith development of juvenile Antarctic emerald rockcod (Trematomus bernacchii)
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Warming, not CO_2-acidified seawater, alters otolith development of juvenile Antarctic emerald rockcod (Trematomus bernacchii)

机译：变暖，而不是Co_2酸化海水，改变了奥托密斯南极翡翠罗楼（Trematomus Bernacchii）的欧特里斯开发

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摘要

The combustion of fossil fuels is currently causing rapid rates of ocean warming and acidification worldwide. Projected changes in these parameters have been repeatedly observed to stress the physiological limits and plasticity of many marine species from the molecular to organismal levels. High latitude oceans are among the fastest changing ecosystems; therefore, polar species are projected to be some of the most vulnerable to climate change. Antarctic species are particularly sensitive to environmental change, having evolved for millions of years under stable ocean conditions. Otoliths, calcified structures found in a fish's inner ear used to sense movement and direction, have been shown to be affected by both warming and CO2-acidified seawater in temperate and tropical fishes but there is no work to date on Antarctic fishes. In this study, juvenile emerald rockcod (Trematomus bernacchii) were exposed to projected seawater warming and CO2-acidification for the year 2100 over 28 days. Sagittal otoliths were analyzed for changes in area, perimeter, length, width and shape. We found ocean warming increased the growth rate of otoliths, while CO2-acidified seawater and the interaction of warming and acidification did not have an effect on otolith development. Elevated temperature also altered the shape of otoliths. If otolith development is altered under future warming scenarios, sensory functions such as hearing, orientation, and movement may potentially be impaired. Changes in these basic somatic abilities could have broad implications for the general capabilities and ecology of early life stages of Antarctic fishes.
机译：化石燃料的燃烧目前正在造成全球海洋变暖和酸化的快速速度。已经反复观察到这些参数的预计变化，以强调许多海洋物种的生理限制和可塑性从分子到有机体水平。高纬度海洋是最快的生态系统之一;因此，Polare物种被预计是最容易受气候变化的影响。南极物种对环境变化特别敏感，在稳定的海洋状况下成了数百万年。右侧，在鱼的内耳中发现的钙化结构被证明受温度和热带鱼类的热化和二氧化碳酸化海水影响，但在南极鱼类上没有工作。在这项研究中，少年翡翠Rockcod（TrematomusBernacchii）暴露于预计海水变暖和2100多年的二氧化碳酸化。分析矢状耳骨，用于面积，周长，长度，宽度和形状的变化。我们发现海洋变暖提高了右侧的生长速度，而二氧化碳酸化海水和变暖和酸化的相互作用对欧司开发没有影响。升高的温度也改变了右侧的形状。如果在未来的变暖场景下改变右侧开发，可能会损害听力，方向和运动等感官函数。这些基本躯体能力的变化可能对南极鱼类早期阶段的一般能力和生态产生了广泛的影响。

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  • 来源
    《Polar biology》 |2021年第9期|1917-1923|共7页
  • 作者

    Naslund Andrew W.; Davis Brittany E.; Hobbs James A.; Fangue Nann A.; Todgham Anne E.;

  • 作者单位

    Univ Calif Davis Dept Anim Sci One Shields Ave Davis CA 95616 USA|Univ Calif Davis Wildlife Fish & Conservat Biol One Shields Ave Davis CA 95616 USA;

    Univ Calif Davis Dept Anim Sci One Shields Ave Davis CA 95616 USA|Univ Calif Davis Wildlife Fish & Conservat Biol One Shields Ave Davis CA 95616 USA|Calif Dept Water Resources Div Environm Serv POB 942836 Sacramento CA 94236 USA;

    Univ Calif Davis Wildlife Fish & Conservat Biol One Shields Ave Davis CA 95616 USA;

    Univ Calif Davis Wildlife Fish & Conservat Biol One Shields Ave Davis CA 95616 USA;

    Univ Calif Davis Dept Anim Sci One Shields Ave Davis CA 95616 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Antarctic fish; Ocean acidification; Warming; Climate change; Otoliths;

    机译：南极鱼类;海洋酸化;变暖;气候变化;奥尔特里斯;

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