期刊
MARINE ENVIRONMENTAL RESEARCH
卷 89, 期 -, 页码 45-52出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2013.04.009
关键词
Climate change; Thermal stress; Lethal effects; Marine invertebrates; Suspension feeders; Eunicella singularis; Mediterranean Sea
资金
- Spanish Ministry of Economy and Innovation through the Biorock project [CTM2009-08045]
- SMART project [CGL2012-32194]
- Ramon y Cajal [RyC-2011-08134]
- JAE
- AECID
- Catalan Government [2009SGR174]
To date, several studies have provided evidence that thermal stress affects the growth, survival and physiology of tropical and temperate macroinvertebrate species. However, few studies have focused on subtidal temperate species and the potential differential thermal tolerances of populations dwelling under contrasting temperature conditions. To assess the role that environmental history has on the response of the temperate gorgonian Eunicella singularis to thermal stress, we compared populations dwelling in the coldest and warmest areas of the NW Mediterranean Sea. Our results show that E. singularis populations from both areas exhibited a high resistance to thermal stress; however, populations from warmer areas had an increased tolerance to thermal stress. Specifically, the upper thermal limits found for cold and warm populations were 28 and 29 degrees C, respectively. The higher resistance of E. singularis colonies to thermal stress found in this study compared to the field temperature conditions during recent mass mortality events highlights that performing further thermotolerance experiments under contrasting levels of feeding is necessary to fully assess the tolerance thresholds displayed by both study populations. To our knowledge, this study provides the first evidence for the role of thermal history in shaping the thermotolerance responses of Mediterranean marine invertebrates dwelling under contrasting temperature environments. (C) 2013 Elsevier Ltd. All rights reserved.
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