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首页> 外文期刊>Journal of Comparative Physiology, B. Biochemical, Systemic, and Environmental Physiology >Temperature increases, hypoxia, and changes in food availability affect immunological biomarkers in the marine mussel Mytilus galloprovincialis
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Temperature increases, hypoxia, and changes in food availability affect immunological biomarkers in the marine mussel Mytilus galloprovincialis

机译：温度升高，缺氧和食物可用性的变化会影响海洋贻贝骨髓疾病的免疫生物标志物

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Temperature increases, hypoxia, and changes in food availability are predicted to occur in the future. There is growing concern for the health status of wild and farmed organisms, since environmental stressors alter organism functions, and elicit coordinated physiological responses for homeostasis. Mussels are good bioindicators of environmental conditions. Their ability to maintain unaltered immunosurveillance under adverse environmental conditions may enhance their survival capability. Few studies are currently concerned with the relationships and feedback among multiple stressors. Here, food concentration, temperature, and oxygenation treatments were evaluated for their effects on immune enzymatic parameters of Mytilus galloprovincialis detected in the digestive gland and the lysosomal viability by neutral red uptake. Mussels were exposed to three temperatures (12, 20, and 28 A degrees C) under normoxic (8 mg O(2)l(-1)) and anoxic conditions and specimens were fed with six food concentrations, ranging 0.2-5 g chlorophyll l(-1). Temperature increases affected esterase and alkaline phophatase enzyme functionality, and addition of food buffered detrimental effects generated by harsh conditions, such as those provided by low oxygen concentrations. Kinetics of the phenoloxidase was negatively correlated with increasing temperature. In this case, food had a buffering effect that counteracted the limiting temperature only under normoxic conditions. In addition, the stability of the lysosomal membrane was altered under conditions of thermal stress and food change, under normoxic and anoxic conditions. Overall, environmental stress factors affected immune biomarkers of Mediterranean mussels, and the level of food acted as a buffer, increasing the thermal resistance of the specimens.
机译：预计未来会出现温度升高、缺氧和食物供应的变化。人们越来越关注野生和养殖生物体的健康状况，因为环境应激源会改变生物体的功能，并引发协调一致的生理反应以维持体内平衡。贻贝是环境条件的良好生物指示器。它们在不利环境条件下保持不变的免疫监测能力可能会提高它们的生存能力。目前很少有研究关注多重压力源之间的关系和反馈。在这里，我们评估了食物浓度、温度和氧合处理对在消化腺中检测到的黑贻贝免疫酶参数和中性红摄取的溶酶体活力的影响。在常氧（8mg O（2）l（-1））和缺氧条件下，将贻贝暴露于三种温度（12、20和28A℃），并用六种浓度的食物喂养样本，范围为0.2-5g叶绿素l（-1）。温度升高会影响酯酶和碱性磷酸酶的功能，添加食物会缓冲恶劣条件下产生的有害影响，如低氧浓度所产生的影响。酚氧化酶的动力学与温度升高呈负相关。在这种情况下，食物具有缓冲作用，仅在常氧条件下才能抵消极限温度。此外，在热应激和食物变化条件下，在常氧和缺氧条件下，溶酶体膜的稳定性也发生了改变。总的来说，环境应激因素影响地中海贻贝的免疫生物标记物，食物水平起到缓冲作用，增加了样本的耐热性。

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