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首页> 外文期刊>ICES Journal of Marine Science >Physiological responses of juvenile Chilean scallops (Argopecten purpuratus) to isolated and combined environmental drivers of coastal upwelling
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Physiological responses of juvenile Chilean scallops (Argopecten purpuratus) to isolated and combined environmental drivers of coastal upwelling

机译：智利扇贝（Argopecten purpuratusus）对沿海上升流的孤立和综合环境驱动力的生理响应

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摘要

Coastal biota is exposed to continuous environmental variability as a consequence of natural and anthropogenic processes. Responding to heterogeneous conditions requires the presence of physiological strategies to cope with the environment. Ecosystems influenced by upwelling endure naturally cold, acidic and hypoxic conditions, nevertheless they sustain major fisheries worldwide. This suggests that species inhabiting upwelling habitats possess physiological adaptations to handle high environmental variability. Here, we assessed the impact of the main upwelling drivers (temperature, pH and oxygen) in isolation and combined on eco-physiological responses of Chilean scallop Argopecten purpuratus. A. purpuratus responded to hypoxia by increasing their metabolic performance to maintain growth and calcification. Calcification was only affected by pH and increased under acidic conditions. Further, A. purpuratus juveniles prioritized calcification at the expense of growth under upwelling conditions. Increasing temperature had a significant impact by enhancing the physiological performance of A. purpuratus juveniles independently of oxygen and pH conditions, but this was associated with earlier and higher mortalities. Our results suggest that A. purpuratus is acclimated to short-term colder, acidic and hypoxic conditions, and provide important information of how this species responds to the heterogeneous environment of upwelling, which is significantly relevant in the climatic context of upwelling intensification.
机译：沿海生物区系由于自然和人为过程而遭受持续的环境变化。应对异质条件需要采取生理策略来应对环境。受上升流影响的生态系统承受着自然寒冷，酸性和低氧的条件，尽管如此，它们仍维持着世界范围内的主要渔业。这表明居住在上升流生境中的物种具有适应高环境变化的生理适应性。在这里，我们评估了主要上升流驱动因素（温度，pH和氧气）的隔离影响，并综合了对智利扇贝Argopecten purpuratusus的生态生理响应的影响。紫癜对缺氧的反应是增加其代谢能力，以维持生长和钙化。钙化仅受pH影响，并在酸性条件下增加。此外，紫草曲霉幼虫优先考虑钙化，但以在上升流条件下的生长为代价。升高温度通过增强紫草曲霉幼鱼的生理性能而不受氧气和pH值的影响，具有显着影响，但这与更早和更高的死亡率相关。我们的研究结果表明紫癜菌适应于短期的寒冷，酸性和低氧条件，并提供了有关该物种如何响应上升流的非均质环境的重要信息，这在上升流的气候环境中具有重要意义。

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  • 来源
    《ICES Journal of Marine Science》 |2019年第6期|1836-1849|共14页
  • 作者

    Ramajo Laura; Fernandez Carolina; Nunez Yolanda; Caballero Paz; Lardies Marco A.; Josefina Poupin Maria;

  • 作者单位

    Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Ave Diagonal Las Torres 2640 Santiago Chile|Ctr Estudios Avanzados Zonas Aridas Ave Ossandon 877 Coquimbo Chile|Univ Concepcion Ctr Study Multiple Drivers Marine Socioecol Syst Concepcion Chile|CiiCC Ave Ejercito 146 Santiago Chile;

    Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Ave Diagonal Las Torres 2640 Santiago Chile|Univ Concepcion Ctr Study Multiple Drivers Marine Socioecol Syst Concepcion Chile;

    PUC Fac Ciencias Biol Ave Libertador Bernardo OHiggins 340 Santiago Chile;

    Ctr Estudios Avanzados Zonas Aridas Ave Ossandon 877 Coquimbo Chile;

    Univ Adolfo Ibanez Fac Ingn & Ciencias Lab Bioingn Ave Diagonal Las Torres 2640 Santiago Chile|Ctr Appl Ecol & Sustainabil CAPES Ave Libertador Bernardo OHiggins 340 Santiago Chile;

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  • 正文语种 eng
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  • 关键词

    environmental drivers; environmental heterogeneity; global change; metabolism; multi-stressor; physiology; tolerance; upwelling;

    机译：环境驱动力;环境异质性全球变化;代谢;多压力源生理;公差;上升;

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