Fatty acid profiling in the invasive brown seaweed Rugulopterix okamurae: A usefulness taxonomical tool

IF 2.1 3区地球科学 Q2 OCEANOGRAPHY

Continental Shelf Research Pub Date : 2025-01-21 DOI:10.1016/j.csr.2025.105412

José L. Guil-Guerrero , M. Carmona-Fernández , Tarik Chileh-Chelh , El-Hassan Belarbi , M. Urrestarazu , T.P. Loeiro Cunha-Chiamolera , M. Ezzaitouni , Miguel Á. Rincón-Cervera , Ignacio Rodríguez-García

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Abstract

Rugulopterix okamurae is a macroalga native to the northwestern Pacific and recently found in Southeast (SE) Spain. This macroalga poses a serious threat because of its strong capacity to alter the community structure of marine ecosystems. This species is difficult to distinguish from native elements such as Dictyota spp.; thus, a simple tool for identifying these algae will be welcome. In this work, the fatty acid (FA) composition of R. okamurae and Dictyota spp. samples from several locations were determined and discussed from a chemotaxonomic point of view. In R. okamurae highlights palmitic, oleic, and arachidonic (ARA) acids, while in D. dichotoma eicosapentaenoic acid and ARA reached higher values than in R. okamurae. Further, Agglomerative Hierarchical Clustering analysis performed for selected FA ratios segregated R. okamurae from any Dictyota species, especially due to ARA + EPA proportions, thus FA profiling constitutes a valid chemotaxonomic tool for rapid identification of R. okamurae.

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来源期刊

Continental Shelf Research 地学-海洋学

CiteScore

4.30

自引率

4.30%

发文量

136

审稿时长

6.1 months

期刊介绍： Continental Shelf Research publishes articles dealing with the biological, chemical, geological and physical oceanography of the shallow marine environment, from coastal and estuarine waters out to the shelf break. The continental shelf is a critical environment within the land-ocean continuum, and many processes, functions and problems in the continental shelf are driven by terrestrial inputs transported through the rivers and estuaries to the coastal and continental shelf areas. Manuscripts that deal with these topics must make a clear link to the continental shelf. Examples of research areas include: Physical sedimentology and geomorphology Geochemistry of the coastal ocean (inorganic and organic) Marine environment and anthropogenic effects Interaction of physical dynamics with natural and manmade shoreline features Benthic, phytoplankton and zooplankton ecology Coastal water and sediment quality, and ecosystem health Benthic-pelagic coupling (physical and biogeochemical) Interactions between physical dynamics (waves, currents, mixing, etc.) and biogeochemical cycles Estuarine, coastal and shelf sea modelling and process studies.