Potential Use of Fatty Acid Profile for Artemia spp. Discrimination
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COLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS
Potential Use of Fatty Acid Profile for Artemia spp. Discrimination H. Ben Naceura, *, M. S. Romdhanb, and G. Van Stappenc aLaboratory of
Bioresources, Biology Integrative and Valorization (LR14ES06), Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Hadded, BP 74, Monastir 5000, Tunisia b Research Unit of Ecosystems and Aquatic Resources (UR03AGRO1), National Institute of Agricultural Sciences of Tunisia, University of Carthage, Carthage, Tunisia c Laboratory of Aquaculture & Artemia Reference Center, Ghent University, Gent, Belgium *e-mail: [email protected] Received April 25, 2018; revised May 10, 2018; accepted February 6, 2019
Abstract—The brine shrimp Artemia is of considerable economic importance in fish and shellfish larviculture. The quality of the Artemia product, differs, in terms of hatching and biometric characteristics, from strain to strain and from location to location. The same applies for their nutritional value which is not constant but varies among strains and within batches of each strain, causing unreliable outputs in marine larviculture. In the present paper we report and compare the fatty acid profiles of decapsulated Artemia cysts of thirteen Artemia populations from different species and geographical origins. Results showed that palmitic acid (16:0) was found in relatively constant proportions from 11.4 to 20.6% of total fatty acids in the cysts of all populations, while proportions of palmitoleic acid (16:1n-7) were higher in marine-type populations (18.6 to 19.1%) than in freshwater-type population (4.3 to 8.3%). In contrast, linoleic acid (18:2n-6) was observed in higher quantity in freshwater-type populations (4.0 to 8.1%) than in marine-type populations (3.1 to 3.3%). Furthermore, a higher n-3/n-6 HUFA ratio was observed in the marine-type population (>1) than in the freshwater-type population (
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