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| DOI | 10.1242/jeb.246707 |
| Behavioural and physiological impacts of low salinity on the sea urchin Echinus esculentus | |
| 发表日期 | 2024 |
| ISSN | 0022-0949 |
| EISSN | 1477-9145 |
| 起始页码 | 227 |
| 结束页码 | 2 |
| 卷号 | 227期号:2 |
| 英文摘要 | Reduced seawater salinity as a result of freshwater input can exert a major influence on the ecophysiology of benthic marine invertebrates, such as echinoderms. While numerous experimental studies have explored the physiological and behavioural effects of short-term, acute exposure to low salinity in echinoids, surprisingly few have investigated the consequences of chronic exposure, or compared the two. In this study, the European sea urchin, Echinus esculentus, was exposed to low salinity over the short term (11 parts per thousand, 16 parts per thousand, 21 parts per thousand, 26 parts per thousand and 31 parts per thousand for 24 h) and longer term (21, 26 and 31 parts per thousand for 25 days). Over the short term, oxygen consumption, activity coefficient and coelomic fluid osmolality were directly correlated with reduced salinity, with 100% survival at >= 21 parts per thousand and 0% at <= 16 parts per thousand. Over the longer term at 21 parts per thousand (25 days), oxygen consumption was significantly higher, feeding was significantly reduced and activity coefficient values were significantly lower than at control salinity (31 parts per thousand). At 26 parts per thousand, all metrics were comparable to the control by the end of the experiment, suggesting acclimation. Furthermore, beneficial functional resistance (righting ability and metabolic capacity) to acute low salinity was observed at 26 parts per thousand. Osmolality values were slightly hyperosmotic to the external seawater at all acclimation salinities, while coelomocyte composition and concentration were unaffected by chronic low salinity. Overall, E. esculentus demonstrate phenotypic plasticity that enables acclimation to reduced salinity around 26 parts per thousand; however, 21 parts per thousand represents a lower acclimation threshold, potentially limiting its distribution in coastal areas prone to high freshwater input. |
| 英文关键词 | Osmotic stress; Echinoderm; Acclimation; Coastal freshening; Climate change; Phenotypic plasticity |
| 语种 | 英语 |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Zoology |
| WOS类目 | Biology ; Zoology |
| WOS记录号 | WOS:001184190200016 |
| 来源期刊 | JOURNAL OF EXPERIMENTAL BIOLOGY
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/303298 |
| 作者单位 | UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC British Antarctic Survey; University of Cambridge; University Centre Svalbard (UNIS) |
| 推荐引用方式 GB/T 7714 | . Behavioural and physiological impacts of low salinity on the sea urchin Echinus esculentus[J],2024,227(2). |
| APA | (2024).Behavioural and physiological impacts of low salinity on the sea urchin Echinus esculentus.JOURNAL OF EXPERIMENTAL BIOLOGY,227(2). |
| MLA | "Behavioural and physiological impacts of low salinity on the sea urchin Echinus esculentus".JOURNAL OF EXPERIMENTAL BIOLOGY 227.2(2024). |
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