陷入困境的海蝶:缅因湾海蝶(Limacina retroversa)对海洋酸化的可靠生物标记和季节敏感性。

IF 2.6 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION
Conservation Physiology Pub Date : 2024-06-21 eCollection Date: 2024-01-01 DOI:10.1093/conphys/coae040
Amy E Maas, Gareth L Lawson, Alexander J Bergan, Zhaohui Aleck Wang, Ann M Tarrant
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引用次数: 0

摘要

人为产生的二氧化碳被动地溶解到海洋系统中,降低了海洋的 pH 值,改变了一系列化学平衡,对一些海洋生物,特别是具有碳酸钙外壳的海洋生物造成了负面影响。虽然我们对这些化学变化的监测有所改进,但我们还没有开发出有效的工具,将通常是 pH 值和碳酸盐饱和状态的观测结果转化为与生态相关的生物风险预测。一个潜在的解决方案是开发生物指标:与环境风险因素有明确关系的生物变量,可用于评估和管理。翼足目动物是一类浮游有壳海洋腹足类动物,由于其在实验室和自然环境中对酸化的敏感性,其对二氧化碳的生物反应被认为是海洋酸化的潜在生物指标。通过五次二氧化碳暴露实验(跨越四个季节,持续时间长达 15 天),我们描述了饱和状态、外壳透明度和暴露时间之间的一致关系,并确定了一套可用于进一步研究的生物监测基因。我们澄清了由于季节性导致的cosome反应的变化,解决了之前的不确定性,并展示了其表型可塑性的范围。在发现翼足目动物的地区,可以将这些酸化压力生物标志物应用到生态系统模型和监测计划中,同时这种方法也将为其他地区提供一个范例,说明如何缩小基于点的化学监测与生态系统健康的生物相关评估之间的差距。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sea butterflies in a pickle: reliable biomarkers and seasonal sensitivity of Limacina retroversa to ocean acidification in the Gulf of Maine.

The passive dissolution of anthropogenically produced CO2 into the ocean system is reducing ocean pH and changing a suite of chemical equilibria, with negative consequences for some marine organisms, in particular those that bear calcium carbonate shells. Although our monitoring of these chemical changes has improved, we have not developed effective tools to translate observations, which are typically of the pH and carbonate saturation state, into ecologically relevant predictions of biological risks. One potential solution is to develop bioindicators: biological variables with a clear relationship to environmental risk factors that can be used for assessment and management. Thecosomatous pteropods are a group of pelagic shelled marine gastropods, whose biological responses to CO2 have been suggested as potential bioindicators of ocean acidification owing to their sensitivity to acidification in both the laboratory and the natural environment. Using five CO2 exposure experiments, occurring across four seasons and running for up to 15 days, we describe a consistent relationship between saturation state, shell transparency and duration of exposure, as well as identify a suite of genes that could be used for biological monitoring with further study. We clarify variations in thecosome responses due to seasonality, resolving prior uncertainties and demonstrating the range of their phenotypic plasticity. These biomarkers of acidification stress can be implemented into ecosystem models and monitoring programmes in regions where pteropods are found, whilst the approach will serve as an example for other regions on how to bridge the gap between point-based chemical monitoring and biologically relevant assessments of ecosystem health.

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来源期刊
Conservation Physiology
Conservation Physiology Environmental Science-Management, Monitoring, Policy and Law
CiteScore
5.10
自引率
3.70%
发文量
71
审稿时长
11 weeks
期刊介绍: Conservation Physiology is an online only, fully open access journal published on behalf of the Society for Experimental Biology. Biodiversity across the globe faces a growing number of threats associated with human activities. Conservation Physiology will publish research on all taxa (microbes, plants and animals) focused on understanding and predicting how organisms, populations, ecosystems and natural resources respond to environmental change and stressors. Physiology is considered in the broadest possible terms to include functional and mechanistic responses at all scales. We also welcome research towards developing and refining strategies to rebuild populations, restore ecosystems, inform conservation policy, and manage living resources. We define conservation physiology broadly and encourage potential authors to contact the editorial team if they have any questions regarding the remit of the journal.
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