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Population density, reproduction cycle and nutritional value of Sphaerechinus granularis (Echinodermata: Echinoidea) in an oceanic insular ecosystem

2022Journal article Open access
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dc.contributor.authorLourenço, Sílvia
dc.contributor.authorJosé, Ricardo
dc.contributor.authorNeves, Pedro
dc.contributor.authorGóis, André
dc.contributor.authorCordeiro, Nereida
dc.contributor.authorAndrade, Carlos
dc.contributor.authorRibeiro, Cláudia
dc.date.accessioned2022-02-09T16:21:32Z
dc.date.available2022-02-09T16:21:32Z
dc.date.issued2022
dc.description.abstractSea urchins play an important role in island coastal ecosystems as keystone species and as potential resources for harvesting and aquaculture. In Southern Europe, the most valuable and harvested species is the European purple sea urchin Paracentrotus lividus, but there is a growing interest to explore other edible species like the blunt sea urchin Sphaerechinus granularis. The echinoderms biodiversity of Madeira archipelago was previously described, but their local habitat, population densities and size distribution, important to establish their harvest and aquaculture potential, are poorly known. The present study aimed to evaluate S. granularis population in the oligotrophic and narrow insular shelf of Madeira archipelago, mainly regarding its habitat, densities, reproduction season and roe marketable characteristics. Sphaerechinus granularis was found in low densities (0.01 ind./m2 ) from shallow to deep reefs (5–30 m). The highest densities occurred in shallow waters and breakwaters in association to encrusting algae, turf and erect brown macroalgae. Here, the low primary productivity ecosystem influenced the long reproductive season of the local population. This population showed a relatively high gonadosomatic index (maximum GI of 8), high gonad weight (5.00–12.19 g) with high proportion of bright yellow and orange gonads (37.5–60%) between February and November. Additionally, the high level of total carotenoids, the high PUFA (particularly EPA) content, and the ratio n-6/n-3 close to one support the high nutritional value of S. granularis roe. The trend of incremental GI between September and November and the increasing content of PUFA in autumn suggests this could be the preferential harvesting season. This information is key to evaluate a sustainable exploitation of this living marine resource.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLourenço S, José R, Neves P, Góis A, Cordeiro N, Andrade C and Ribeiro C (2022) Population Density, Reproduction Cycle and Nutritional Value of Sphaerechinus granularis (Echinodermata: Echinoidea) in an Oceanic Insular Ecosystem. Front. Mar. Sci. 8:699942. doi: 10.3389/fmars.2021.699942pt_PT
dc.identifier.doi10.3389/fmars.2021.699942pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4070
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Mediapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMacaronesia regionpt_PT
dc.subjectGonad yieldpt_PT
dc.subjectGonad colorpt_PT
dc.subjectCarotenoidspt_PT
dc.subjectFatty acidspt_PT
dc.subjectSphaerechinus granularispt_PT
dc.subjectMadeira archipelago (Portugal)pt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titlePopulation density, reproduction cycle and nutritional value of Sphaerechinus granularis (Echinodermata: Echinoidea) in an oceanic insular ecosystempt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleFrontiers in Marine Sciencept_PT
oaire.citation.volume8pt_PT
person.familyNameGóis
person.familyNamecordeiro
person.givenNameAndré
person.givenNamenereida
person.identifier1612636
person.identifier.ciencia-idD518-EF78-40DD
person.identifier.ciencia-id521A-0F62-EA39
person.identifier.orcid0000-0001-6410-5184
person.identifier.orcid0000-0001-6006-3415
person.identifier.ridO-2253-2019
person.identifier.scopus-author-id57202950944
person.identifier.scopus-author-id7004319456
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8f601e0a-5394-4f2f-bf06-4203ef1576f8
relation.isAuthorOfPublication3d02b657-c48c-4f56-813a-1284b81960f3
relation.isAuthorOfPublication.latestForDiscovery8f601e0a-5394-4f2f-bf06-4203ef1576f8

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