Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats

Abstract Sea urchins Paracentrotus lividus were harvested monthly from April 2015 to March 2016 from two sites in Sardinia (Italy). The two sites, a Posidonia oceanica meadow and a rocky bottom habitat, were naturally characterized by different food sources and availability, being mainly populated b...

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Autores principales:	Roberto Anedda, Silvia Siliani, Riccardo Melis, Barbara Loi, Maura Baroli
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b2f1e200949444168f4f7b8ea6bb8a6d
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spelling	oai:doaj.org-article:b2f1e200949444168f4f7b8ea6bb8a6d2021-12-02T15:39:59ZLipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats10.1038/s41598-021-93669-92045-2322https://doaj.org/article/b2f1e200949444168f4f7b8ea6bb8a6d2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93669-9https://doaj.org/toc/2045-2322Abstract Sea urchins Paracentrotus lividus were harvested monthly from April 2015 to March 2016 from two sites in Sardinia (Italy). The two sites, a Posidonia oceanica meadow and a rocky bottom habitat, were naturally characterized by different food sources and availability, being mainly populated by the sea grass Posidonia oceanica and the brown algae Halopteris scoparia, respectively. Total lipids showed a minimum during winter in mature gonads, and a maximum in the summer (recovery stage). Fatty acid (FA) profiles of gut contents and gonads differed from those of the most available food sources. Levels of C18:3 (n-3) (ALA) discriminated samples from the two sites. Despite the very low amounts of C20:5 (n-3) (EPA) and C20:4 (n-6) (ARA) in P. oceanica, the main FA in gonads and gut contents were EPA and ARA in both sites. Increase in green algae intake prior to gametogenesis, especially C. cylindracea, likely affected EPA and ARA levels in gonads. The results show that P. lividus is able to concentrate lipids in gut contents and also to selectively store EPA, ARA and their precursors ALA and 18:2 (n-6) (LA). Moreover, bioconversion of ALA to EPA and of LA to ARA in P. lividus is suggested.Roberto AneddaSilvia SilianiRiccardo MelisBarbara LoiMaura BaroliNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Roberto Anedda Silvia Siliani Riccardo Melis Barbara Loi Maura Baroli Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats
description	Abstract Sea urchins Paracentrotus lividus were harvested monthly from April 2015 to March 2016 from two sites in Sardinia (Italy). The two sites, a Posidonia oceanica meadow and a rocky bottom habitat, were naturally characterized by different food sources and availability, being mainly populated by the sea grass Posidonia oceanica and the brown algae Halopteris scoparia, respectively. Total lipids showed a minimum during winter in mature gonads, and a maximum in the summer (recovery stage). Fatty acid (FA) profiles of gut contents and gonads differed from those of the most available food sources. Levels of C18:3 (n-3) (ALA) discriminated samples from the two sites. Despite the very low amounts of C20:5 (n-3) (EPA) and C20:4 (n-6) (ARA) in P. oceanica, the main FA in gonads and gut contents were EPA and ARA in both sites. Increase in green algae intake prior to gametogenesis, especially C. cylindracea, likely affected EPA and ARA levels in gonads. The results show that P. lividus is able to concentrate lipids in gut contents and also to selectively store EPA, ARA and their precursors ALA and 18:2 (n-6) (LA). Moreover, bioconversion of ALA to EPA and of LA to ARA in P. lividus is suggested.
format	article
author	Roberto Anedda Silvia Siliani Riccardo Melis Barbara Loi Maura Baroli
author_facet	Roberto Anedda Silvia Siliani Riccardo Melis Barbara Loi Maura Baroli
author_sort	Roberto Anedda
title	Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats
title_short	Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats
title_full	Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats
title_fullStr	Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats
title_full_unstemmed	Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats
title_sort	lipid metabolism of sea urchin paracentrotus lividus in two contrasting natural habitats
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b2f1e200949444168f4f7b8ea6bb8a6d
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Lipid metabolism of sea urchin Paracentrotus lividus in two contrasting natural habitats

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