Fatty acids and elemental composition as biomarkers of Octopus vulgaris populations: Does origin matter?
2019
Arechavala-Lopez, Pablo | Capó, Xavier | Oliver-Codorniú, Marc | Sillero-Rios, Joana | Busquets-Cortés, Carla | Sanchez-Jerez, Pablo | Sureda, Antoni | Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada | Biología Marina
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.
Show more [+] Less [-]This work was partially funded by the Ministry of Economy, Industry and Competitiveness (ref. IJCI-2015-25595), by the Institute of Health Carlos III (Project CIBEROBN CB12/03/30038) and by Govern de les Illes Balears (AAEE001/2017). We would like to thank the “Conselleria de Medi Ambient, Agricultura i Pesca” of the “Govern de las Illes Balears” for supporting this project.
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