1. Lipid Adaptation of Shrimp Rimicaris exoculata in Hydrothermal Vent.
- Author
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Zhu S, Ye M, Yan X, Zhou Y, Wang C, and Xu J
- Subjects
- Animals, Atlantic Ocean, Biomarkers analysis, Biomarkers chemistry, Biomarkers metabolism, Ceramides chemistry, Ceramides metabolism, China, Decapoda chemistry, Decapoda growth & development, Diglycerides chemistry, Diglycerides metabolism, Fatty Acids analysis, Fatty Acids metabolism, Hot Temperature adverse effects, Molecular Structure, Muscles chemistry, Pacific Ocean, Penaeidae, Phospholipids chemistry, Phospholipids metabolism, Sphingomyelins chemistry, Sphingomyelins metabolism, Triglycerides chemistry, Triglycerides metabolism, Adaptation, Physiological, Decapoda physiology, Hydrothermal Vents, Lipid Metabolism, Muscles metabolism, Shellfish analysis
- Abstract
The shrimp Rimicaris exoculata is the most abundant species in hydrothermal vents. Lipids, the component of membranes, play an important role in maintaining their function normally in such extreme environments. In order to understand the lipid adaptation of R. exoculata (HV shrimp) to hydrothermal vents, we compared its lipid profile with the coastal shrimp Litopenaeus vannamei (EZ shrimp) which lives in the euphotic zone, using ultra performance liquid chromatography electrospray ionization-quadrupole time-of-flight mass spectrometry. As a result, the following lipid adaptation can be observed. (1) The proportion of 16:1 and 18:1, and non-methylene interrupted fatty acid (48.9 and 6.2 %) in HV shrimp was higher than that in EZ shrimp (12.7 and 0 %). While highly-unsaturated fatty acids were only present in the EZ shrimp. (2) Ceramide and sphingomyelin in the HV shrimp were enriched in d14:1 long chain base (96.5 and 100 %) and unsaturated fatty acids (67.1 and 57.7 %). While in the EZ shrimp, ceramide and sphingomyelin had the tendency to contain d16:1 long chain base (68.7 and 75 %) and saturated fatty acids (100 and 100 %). (3) Triacylglycerol content (1.998 ± 0.005 nmol/mg) in the HV shrimp was higher than that in the EZ shrimp (0.092 ± 0.005 nmol/mg). (4) Phosphatidylinositol and diacylglycerol containing highly-unsaturated fatty acids were absent from the HV shrimp. (5) Lysophosphatidylcholine and lysophosphatidylethanolamine were rarely detected in the HV shrimp. A possible reason for such differences was the result of food resources and inhabiting environments. Therefore, these lipid classes mentioned above may be the biomarkers to compare the organisms from different environments, which will be benefit for the further exploitation of the hydrothermal environment.
- Published
- 2015
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