DOI: 10.1016/j.marpolbul.2017.12.057
Scopus记录号: 2-s2.0-85040328099
论文题名: Effects of an experimental heat wave on fatty acid composition in two Mediterranean seagrass species
作者: Beca-Carretero P. ; Guihéneuf F. ; Marín-Guirao L. ; Bernardeau-Esteller J. ; García-Muñoz R. ; Stengel D.B. ; Ruiz J.M.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
语种: 英语
英文关键词: Acclimatization
; Climate change
; Cymodoceanodosa
; Fatty acid plasticity
; Heat wave
; Laboratory experiment
; Mediterranean Sea
; Posidonia oceanica
; Temperature
Scopus关键词: Climate change
; Climatology
; Ecosystems
; Global warming
; Plants (botany)
; Polyunsaturated fatty acids
; Saturated fatty acids
; Temperature
; Thermal stress
; Acclimatization
; Cymodoceanodosa
; Heat waves
; Laboratory experiments
; Mediterranean sea
; Posidonia oceanica
; Fatty acids
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Global warming is emerging as one of the most critical threats to terrestrial and marine species worldwide. This study assessed the effects of simulated warming events in culture on two seagrass species, Posidonia oceanica and Cymodocea nodosa, which play a key role in coastal ecosystems of the Mediterranean Sea. Changes in fatty acids as key metabolic indicators were assessed in specimens from two geographical populations of each species adapted to different in situ temperature regimes. Total fatty acid (TFA) content and composition were compared in C. nodosa and P. oceanica from natural populations and following exposure to heat stress in culture. After heat exposure, individuals of C. nodosa and P. oceanica adapted to colder temperatures in situ accumulated significantly more TFA than controls. For both species, the proportion of polyunsaturated fatty acids (PUFA) decreased, and the percentage of saturated fatty acids (SFA) increased significantly after the heat treatment. These results highlight that populations of both species living at warmest temperatures in situ were more thermo-tolerant and exhibited a greater capacity to cope with heat stress by readjusting their lipid composition faster. Finally, exposure of seagrasses to warmer conditions may induce a decrease in PUFA/SFA ratio which could negatively affect their nutritional value and generate important consequences in the healthy state of next trophic levels. © 2017 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88607
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Botany and Plant Science, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland; Seagrass Ecology Group, Oceanography Centre of Murcia, Spanish Oceanography Institute, Spain; Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
Recommended Citation:
Beca-Carretero P.,Guihéneuf F.,Marín-Guirao L.,et al. Effects of an experimental heat wave on fatty acid composition in two Mediterranean seagrass species[J]. Marine Pollution Bulletin,2018-01-01