脂肪酸和元素组成作为章鱼（Octopus vulgaris）种群的生物标志物：起源重要吗？
Fatty acids and elemental composition as biomarkers of Octopus vulgaris populations: Does origin matter?
机构信息
Fish Ecology Group, Department of Ecology of Marine Resources, Mediterranean Institute of Advance Studies (IMEDEA-CSIC/UIB), Esporles, Balearic Islands, Spain.
Research Group on Community Nutrition and Oxidative Stress, IUNICS, University of Balearic Islands, Palma de Mallorca, Balearic Islands, Spain.
出版信息
Mar Pollut Bull. 2019 Feb;139:299-310. doi: 10.1016/j.marpolbul.2018.12.048. Epub 2019 Jan 8.
The present study describes the novel use of fatty acids (FAs) and element profiles of Octopus vulgaris inhabiting three coastal areas in the W-Mediterranean Sea. These populations are exposed to different anthropogenic activities, and were compared at different geographical scales. The FA composition in the mantle of O. vulgaris exhibited significant differences in 22:6 n-3 (DHA) and 22:5 n-3 (EPA) among the sampled populations. The essential microelements Fe, Cu, Zn and Ni, and the non-essential microelements As, Sr, Al and Cd were the main contributors of variability among sampled octopus populations, with some notable differences among tissues. The variations in the FAs and elemental composition in octopus tissues were detected with other populations throughout the species distribution range, which might reflect differences in natural habitats and foraging strategies. Therefore, these may be considered biomarkers as a proxy to distinguish the origin of octopus specimens at different scales.
本研究描述了脂肪酸（FAs）和栖息在地中海西部三个沿海地区的普通章鱼元素特征的新用途。这些种群受到不同人为活动的影响，并在不同的地理尺度上进行了比较。普通章鱼外套膜中的脂肪酸组成在采样种群之间的 22:6n-3（DHA）和 22:5n-3（EPA）方面存在显著差异。必需微量元素铁、铜、锌和镍，以及非必需微量元素砷、锶、铝和镉是采样章鱼种群变异的主要贡献者，组织之间存在一些明显差异。在整个物种分布范围内，其他种群也检测到了章鱼组织中脂肪酸和元素组成的变化，这可能反映了其自然栖息地和觅食策略的差异。因此，这些可以被认为是生物标志物，用于区分不同尺度的章鱼标本的起源。
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