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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >The effect of high hydrostatic pressure acclimation on acute temperature tolerance and phospholipid fatty acid composition in the shallow-water shrimp Palaemon varians
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The effect of high hydrostatic pressure acclimation on acute temperature tolerance and phospholipid fatty acid composition in the shallow-water shrimp Palaemon varians

机译：高静压压力适应对浅水虾Palaemon varians急性耐耐耐力和磷脂脂肪酸组成的影响

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摘要

Extant deep-sea fauna, including hydrothermal vent endemics such as bresiliid shrimp, are descended from shallow-water ancestors. Previous studies have demonstrated the capacity of shallow-water shrimp to acclimate to hydrostatic pressure representative of the vent environment. It has been proposed that this hyperbaric acclimation depends in part on shifts in phospholipid fatty acid composition to maintain biomembrane function. These shifts are also predicted to reduce critical temperature tolerance, potentially limiting the possibility of direct colonisation of the hydrothermal vent environment. Here, we present evidence that acclimation to high hydrostatic pressure (10 MPa approximate to 1000 m water depth) decreases acute temperature tolerance from 30.2 degrees C to 27.1 degrees C in the shallow-water shrimp Palaemon varians acclimated to 10 degrees C. Statistically significant shifts in phospholipid fatty acid composition occurred during exposure to high hydrostatic pressure, suggesting that homeoviscous modifications support shifts in environmental tolerances during hyperbaric acclimation. Despite the reduction in temperature tolerance, P. varians retains sufficient thermal scope to tolerate the thermal regime in the hydrothermal vent environment, allowing for the possibility of direct deep-sea hydrothermal vent colonisation by shallow-water shrimp.
机译：现存的深海动物群，包括浅水祖先等水热通风的民族学报，包括浅水祖先。以前的研究表明，浅水虾能够适应通风环境的静水压力。已经提出，这种高压加速度部分取决于磷脂脂肪酸组合物中的偏移，以维持生物膜功能。这些换档还预测，以降低临界温度耐受性，可能限制了热热通风环境直接定植的可能性。在这里，我们介绍了对高水压压力（10MPa近似为1000米的10MPa）的证据，从30.2摄氏度达到27.1摄氏度，将浅水虾Palaemon varians适应10摄氏度的急性耐受性降低至27.1摄氏度。统计学显着在磷脂脂肪酸组合物发生在暴露于高静水压力期间，表明在高压灌装过程中，正起修饰支持在环境耐受期间的变化。尽管耐温耐力降低，但是P. Varians保留了足够的热范围，以容忍水热通风环境中的热量，允许通过浅水虾直接深海水热通风口定植的可能性。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2019年第mayajuna期|103-109|共7页
  • 作者

    Brown Alastair; Thatje Sven; Martinez Alejandro; Pond David; Oliphant Andrew;

  • 作者单位

    Univ Southampton Natl Oceanog Ctr Southampton Ocean & Earth Sci European Way Southampton SO14 3ZH Hants England;

    Univ Southampton Natl Oceanog Ctr Southampton Ocean & Earth Sci European Way Southampton SO14 3ZH Hants England;

    Univ Southampton Natl Oceanog Ctr Southampton Ocean & Earth Sci European Way Southampton SO14 3ZH Hants England;

    Scottish Assoc Marine Sci Oban PA37 1QA Argyll Scotland;

    Univ Southampton Natl Oceanog Ctr Southampton Ocean & Earth Sci European Way Southampton SO14 3ZH Hants England;

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  • 正文语种 eng
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  • 关键词

    Adaptation; Caridea; CTmax; Deep sea; Ecology; Physiology;

    机译：适应;caridea;ctmax;深海;生态学;生理学;

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