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Cardiac performance: a thermal tolerance indicator in scallops

机译：心脏性能：扇贝的热耐受性指标

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摘要

Thermal tolerance has become an active research area in marine poikilotherms due to the influence of increased sea temperature caused by global warming. Previous indicators of thermal tolerance in bivalves are generally laborious and time-consuming and even require killing the specimens. In this study, we demonstrated that heart rate (HR) was a stable and reliable indicator for scallop physiological status by applying an infrared-based cardiac performance monitoring system. The feasibility of HR-based Arrhenius break temperatures (ABTs) as a scallop thermal tolerance indicator was evaluated by investigating ABTs of four species with different thermal limits, including the Yesso scallop (Patinopecten yessoensis), the Zhikong scallop (Chlamys farreri), the bay scallop (Argopecten irradians), and the Catarina scallop (Argopecten ventricosus). In accordance with the thermal limits, ABTs of the Yesso scallop, Zhikong scallop, bay scallop, and Catarina scallop were 22.03 +/- 0.19, 29.10 +/- 0.25, 32.20 +/- 0.25, and 34.09 +/- 0.19 degrees C, respectively, suggesting that the ABT could indicate thermal limits in interspecific scallops. Variations in the ABTs were observed among intraspecific scallops with different sizes, weights, and ages, suggesting that smaller and younger scallops tend to have higher thermal limits. Significant differences in ABT were also observed between pre- and post-spawning individuals, implying that spawning behavior could decrease scallop thermal limits. The above results suggest that HR-based ABT can detect not only interspecific but also intraspecific thermal tolerance in scallops. This study reports the feasibility of infra-red-based cardiac performance as a rapid, efficient, and noninvasive indicator for bivalve thermal tolerance.
机译：由于全球变暖导致海温升高的影响，热耐受性已成为海洋温度上升的一个活跃研究领域。以往双壳阀的耐热性指标通常比较费力且费时，甚至需要杀死标本。在这项研究中，我们证明了心率（HR）是通过应用基于红外线的心脏性能监测系统来稳定地评估扇贝生理状态的指标。通过调查四种具有不同热极限的物种的ABT，包括基于Yesso扇贝（Patinopecten yessoensis），直孔干贝（Chlamys farreri），海湾的基于HR的Arrhenius断裂温度（ABTs）作为扇贝热耐受性指标的可行性进行了评估。扇贝（Argopecten irradians）和Catarina扇贝（Argopecten ventricosus）。根据温度限制，Yesso扇贝，Zhikong扇贝，海湾扇贝和Catarina扇贝的ABT为22.03 +/- 0.19、29.10 +/- 0.25、32.20 +/- 0.25和34.09 +/- 0.19摄氏度，分别表明ABT可以指示种间扇贝的热极限。在具有不同大小，体重和年龄的种内扇贝中观察到ABT的变化，这表明较小和较年轻的扇贝倾向于具有较高的热极限。在产卵前和产后个体之间也观察到ABT的显着差异，这意味着产卵行为可能会降低扇贝的热极限。以上结果表明，基于HR的ABT不仅可以检测扇贝中的种间差异，而且还可以检测种内差异。这项研究报告了基于红外线的心脏性能作为双瓣膜热耐受性的快速，有效和无创性指标的可行性。

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  • 来源
    《Marine biology》 |2016年第12期|244.1-244.9|共9页
  • 作者

    Xing Qiang; Li Yangping; Guo Haobing; Yu Qian; Huang Xiaoting; Wang Shi; Hu Xiaoli; Zhang Lingling; Bao Zhenmin;

  • 作者单位

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China|Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China|Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China|Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China;

    Ocean Univ China, Minist Educ, Key Lab Marine Genet & Breeding, Coll Marine Life Sci, 5 Yushan Rd, Qingdao 266003, Peoples R China|Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China;

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