期刊
MARINE ENVIRONMENTAL RESEARCH
卷 113, 期 -, 页码 124-133出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2015.12.001
关键词
Paracentrotus lividus; Lipids; Sardinia; Sea urchin; Multivariate analysis; Reproductive cycle
资金
- Sardinia Regional Government by means of Sardegna Ricerche [26 L.R. 37/98]
The influence of seasonal and environmental patterns on the lipid fraction of Paracentrotus lividus gonads was investigated. For this purpose, sea urchins were collected monthly over a year from two Sardinian coastal areas. Total lipids in gonads follow an annual cyclical trend, described by a sine wave curve, that it is more influenced by season than by growing area. The lowest lipid content in gonads corresponds to a high percentage of mature reproductive stages (i.e. winter season), independently of sampling area. A variation in total lipid content follows a change in photoperiod, while it is related to sea surface temperature. Multivariate analysis on fatty acid profiles of gonads, detected by gas chromatography, clusters the collected specimens mainly according to the sampling area, secondly according to the sites within the same sampling area and finally according to season. (C) 2015 Elsevier Ltd. All rights reserved.
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