The metabolic response of pteropods to acidification reflects natural CO 2 -exposure in oxygen minimum zones
The metabolic response of pteropods to acidification reflects natural CO 2 -exposure in oxygen minimum zones
复制标题
翼足类动物对酸化的代谢反应反映了最低氧区的自然 CO 2 暴露
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
B. Seibel
中科院分区：
文献类型：
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作者：
Amy E. Maas;K. Wishner;B. Seibel
摘要。有壳翼足类是一种全浮游软体动物，人们认为它们对海洋酸化特别敏感，因为它们的文石壳是高度可溶的。尽管存在这种担忧，但人们对这些动物对二氧化碳浓度升高的生理反应知之甚少。本研究考察了从太平洋热带地区采集的五种翼足类动物在二氧化碳水平升高（0.10%,1000 ppm）时的氧气消耗和氨排泄情况。我们的研究结果表明，自然迁移到最低氧区的翼足类，如Hyalocylis striata， Clio pyramidata， Cavolinia longirostris和Creseis virgula，在测试的水平和持续时间上不受二氧化碳的影响。不迁移的Diacria quadridentata对高二氧化碳条件的反应是减少氧气消耗和氨排泄。这表明，个别物种的自然化学环境可能会影响它们对海洋酸化的适应能力。
Abstract. Shelled pteropods (Thecosomata) are a group of holoplanktonic mollusks that are believed to be especially sensitive to ocean acidification because their aragonitic shells are highly soluble. Despite this concern, there is very little known about the physiological response of these animals to conditions of elevated carbon dioxide. This study examines the oxygen consumption and ammonia excretion of five pteropod species, collected from tropical regions of the Pacific Ocean, to elevated levels of carbon dioxide (0.10%, 1000 ppm). Our results show that pteropods that naturally migrate into oxygen minimum zones, such as Hyalocylis striata, Clio pyramidata, Cavolinia longirostris and Creseis virgula, were not affected by carbon dioxide at the levels and duration tested. Diacria quadridentata, which does not migrate, responds to high carbon dioxide conditions with reduced oxygen consumption and ammonia excretion. This indicates that the natural chemical environment of individual species may influence their resilience to ocean acidification.