Estuarine conditions more than pH modulate the physiological flexibility of mussel Perumytilus purpuratus populations

Ramajo Laura; Osores Sebastian J.; Lagos Nelson A.; Broitman Bernardo R.; Navarro Jorge M.; Vargas Cristian A.; Manriquez Patricio H.; Lardies Marco A.

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Estuarine conditions more than pH modulate the physiological flexibility of mussel Perumytilus purpuratus populations

机译：偏卤素条件超过pH调节贻贝·佩鲁穆斯毒素种群的生理柔韧性

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Coasts and their marine biota are exposed to major environmental heterogeneity as a consequence of natural drivers and anthropogenic stressors. Here, individuals of the mussel Perumytilus purpuratus from two different geographical populations exposed to contrasting environmental conditions (i.e. estuarine versus open coastal conditions) were used in a reciprocal transplant and a laboratory experiment with the aim of determining the grade of of local adaptation to their native sites, as well as their sensibility to ocean acidification. After characterizing environmentally the coastal habitats, a set of life-history traits and a phenotypic plasticity index were determined for both mussel populations. From the reciprocal transplant experiment, we observed that mussels originally coming from the estuarine habitat exhibited a distinctive performance pattern usually associated with physiological stress (i.e. higher metabolic rates, lower calcification and growth rates) leading to important physiological trade-offs and higher levels of phenotypic plasticity. Alternatively, mussels originating from the open coastal site showed lower physiological phenotypic plasticity suggesting a high grade of local adaptation to their habitat. In addition, both populations responded very similarly to lower pH conditions (i.e. increased metabolic rates with no important effects on growth and calcification, and lower physiological phenotypic plasticity). The study results indicated that overall estuarine conditions more than isolated pH changes would be modulating the performance and the level of phenotypic plasticity of the two P. purpuratus geographical populations studied. Our study also emphasizes the necessity of characterizing phenotypic plasticity under multiple-driver environments to cast more accurate predictions about the susceptibility of marine biota to future climate stressors such as ocean acidification.

机译：由于天然司机和人为压力源，海岸及其海洋生物群暴露于主要的环境异质性。在这里，来自两种不同地理群的贻贝·佩鲁穆斯毒蕈族的个体，暴露于对比环境条件（即河口与开放的沿海条件）用于互惠移移和实验室实验，目的是确定对其本地人的局部适应等级网站以及他们对海洋酸化的敏感性。在环境上进行环境的沿海栖息地，为贻贝群体确定了一系列生命历史特征和表型可塑性指数。从倒数移植实验中，我们观察到最初来自河口栖息地的贻贝表现出一种与生理压力（即较高的代谢率，降低钙化和增长率）相关的独特性能模式，导致重要的生理权衡和更高水平的表型。可塑性。或者，源自开放沿海网站的贻贝显示出较低的生理表型可塑性，表明对其栖息地的局部局部适应等级。此外，两种群体都非常相似地响应于降低pH条件（即，增加代谢率，对生长和钙化没有重要影响，以及较低的生理表型可塑性）。研究结果表明，总体偏卤素条件超过分离的pH变化将是调节所研究的两种P.Purpuratus地理种群的表型可塑性的性能和水平。我们的研究还强调了在多驾驶员环境下表现表型可塑性的必要性，以更准确的预测对海洋生物群至未来的气候压力源等海洋酸化的易感性。

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来源
《Estuarine Coastal and Shelf Science》 |2021年第5期|107098.1-107098.12|共12页
作者
Ramajo Laura; Osores Sebastian J.; Lagos Nelson A.; Broitman Bernardo R.; Navarro Jorge M.; Vargas Cristian A.; Manriquez Patricio H.; Lardies Marco A.;
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作者单位

Ctr Estudios Avanzados Zonas Aridas CEAZA Ave Bernardo Ossandon 877 Coquimbo Chile|Univ Catolica Norte Fac Ciencias Mar Dept Biol Marina Coquimbo Chile|Univ Santo Tomas Fac Ciencias Ctr Invest & Innovac Cambio Climat CiiCC Santiago Chile;

Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Santiago Chile|Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Vi na Del Mar Chile;

Univ Santo Tomas Fac Ciencias Ctr Invest & Innovac Cambio Climat CiiCC Santiago Chile;

Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Santiago Chile|Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Vi na Del Mar Chile;

Univ Austral Chile Fac Ciencias Lab Costero Calfuco Inst Ciencias Marinas & Limnol Valdivia Chile|Univ Austral Chile Ctr FONDAP Invest Ecosistemas Marinos Altas Latit Valdivia Chile;

Univ Concepcion Fac Ciencias Ambientales Dept Sistemas Acuat Lab Ecosistemas Costeros & Cambio Ambiental Globa Concepcion Chile|Univ Concepcion Inst Milenio Oceanog IMO Concepcion Chile;

Ctr Estudios Avanzados Zonas Aridas CEAZA Ave Bernardo Ossandon 877 Coquimbo Chile|Lab Ecol & Conducta Ontogenia Temprana LECOT Coquimbo Chile;

Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Santiago Chile|Univ Adolfo Ibanez Fac Artes Liberales Dept Ciencias Vi na Del Mar Chile;

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正文语种 eng
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关键词
Ocean acidification; Estuarine; Coast; Trade-offs; Phenotypic plasticity; Intertidal; Mollusks;

机译：海洋酸化;河口;海岸;权衡;表型可塑性;intertidal;软体动物;

Estuarine conditions more than pH modulate the physiological flexibility of mussel Perumytilus purpuratus populations

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