High prevalence of polyunsaturated-fatty-acid producing bacteria in arctic invertebrates

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Abstract

Bacteria producing the two long-chained polyunsaturated fatty acids eicosapentaenoic (20:5 n-3) and docosahexaenoic (22:6 n-3) acid, which principally have been associated with deep-sea environments, were found in the culturable flora of all species of a selection of 10 arctic and sub- arctic invertebrates and in one of four fish species. In total, 103 out of 330 strains which were tested carried this trait. Highest prevalences, i.e., more than 50% of total isolates were detected in two species of bivalves (Chlamys islandica and Astarte sp.) and in the amphipod Gammarus wilkitzkii. Standard taxonomic tests, supplemented with fatty-acid profile analysis, affiliated all polyunsaturated-fatty-acid producing strains either to the pseudomonad or vibrio main groups of marine bacteria.

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Jøstensen, J. P., & Landfald, B. (1997). High prevalence of polyunsaturated-fatty-acid producing bacteria in arctic invertebrates. FEMS Microbiology Letters, 151(1), 95–101. https://doi.org/10.1016/S0378-1097(97)00148-1

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