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首页> 外文期刊>Marine biology >Dose-dependence and small-scale variability in responses to ocean acidification during squid, Doryteuthis pealeii, development
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Dose-dependence and small-scale variability in responses to ocean acidification during squid, Doryteuthis pealeii, development

机译：鱿鱼（Doryteuthis pealeii）发育过程中对海洋酸化反应的剂量依赖性和小范围变异性

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Coastal squids lay their eggs on the benthos, leaving them to develop in a dynamic system that is undergoing rapid acidification due to human influence. Prior studies have broadly investigated the impacts of ocean acidification on embryonic squid, but have not addressed the thresholds at which these responses occur or their potential variability. We raised squid, Doryteuthis pealeii (captured in Vineyard Sound, Massachusetts, USA: 41 degrees 23.370'N 70 degrees 46.418W), eggs in three trials across the breeding season (May-September, 2013) in a total of six chronic pCO(2) exposures (400, 550, 850, 1300, 1900, and 2200ppm). Hatchlings were counted and subsampled for mantle length, yolk volume, hatching time, hatching success, and statolith morphology. New methods for analysis of statolith shape, rugosity, and surface degradation were developed and are presented (with code). Responses to acidification (e.g., reduced mantle lengths, delayed hatching, and smaller, more degraded statoliths) were evident at similar to 1300ppm CO2. However, patterns of physiological response and energy management, based on comparisons of yolk consumption and growth, varied among trials. Interactions between pCO(2) and hatching day indicated a potential influence of exposure time on responses, while interactions with culture vessel highlighted the substantive natural variability within a clutch of eggs. While this study is consistent with, and expands upon, previous findings of sensitivity of the early life stages to acidification, it also highlights the plasticity and potential for resilience in this population of squid.
机译：沿海鱿鱼将卵产在便当上，使它们在动态系统中发育，由于人类的影响，该系统正在快速酸化。先前的研究已经广泛地研究了海洋酸化对鱿鱼的影响，但没有解决这些反应发生的阈值或潜在的变异性。我们在整个繁殖季节（2013年5月至9月）的三项试验中，共饲养了六个慢性pCO（在美国马萨诸塞州的Vineyard Sound捕获的鱿鱼Doryteuthis pealeii：41度23.370'N 70度46.418W），卵。 2）曝光（400、550、850、1300、1900和2200ppm）。对幼雏进行计数，并对其地幔长度，蛋黄量，孵化时间，孵化成功率和石笋形态进行二次采样。开发并提出了用于分析石笋形状，皱纹和表面降解的新方法（使用代码）。在接近1300ppm CO2的情况下，显然可以看到对酸化的响应（例如，缩短的地幔长度，延迟的孵化以及更小，更易降解的针状石）。但是，根据蛋黄消耗量和生长量的比较，生理反应和能量管理的模式因试验而异。 pCO（2）与孵化日之间的相互作用表明暴露时间对响应的潜在影响，而与培养容器的相互作用则突显了一大堆卵内的实质性自然变异性。尽管这项研究与早期发现早期对酸化的敏感性相一致，并且在此基础上进行了扩展，但它也突显了这种鱿鱼种群的可塑性和潜在复原力。

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  • 来源
    《Marine biology》 |2019年第5期|62.1-62.24|共24页
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    Zakroff Casey; Mooney T. Aran; Berumen Michael L.;

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    MIT, Woods Hole Oceanog Inst, Joint Program Oceanog Appl Ocean Sci & Engn, Cambridge, MA 02139 USA|Woods Hole Oceanog Inst, Biol Dept, Woods Hole, MA 02543 USA|King Abdullah Univ Sci & Technol, Div Biol & Environm Sci & Engn, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia;

    Woods Hole Oceanog Inst, Biol Dept, Woods Hole, MA 02543 USA;

    King Abdullah Univ Sci & Technol, Div Biol & Environm Sci & Engn, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia;

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