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

Lourenço, Sílvia; José, Ricardo; Neves, Pedro; Góis, André; Cordeiro, Nereida; Andrade, Carlos; Ribeiro, Cláudia

Publication

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

2022Journal article

dc.contributor.author	Lourenço, Sílvia
dc.contributor.author	José, Ricardo
dc.contributor.author	Neves, Pedro
dc.contributor.author	Góis, André
dc.contributor.author	Cordeiro, Nereida
dc.contributor.author	Andrade, Carlos
dc.contributor.author	Ribeiro, Cláudia
dc.date.accessioned	2022-08-17T08:49:22Z
dc.date.available	2022-08-17T08:49:22Z
dc.date.issued	2022
dc.description	FUNDING : The chemical analyses were supported by ISLANDAP project (INTERREG MAC/1.1a/207). RJ, CR, and PN were financially supported by the Oceanic Observatory of Madeira Project (M1420-01-0145-FEDER-000001-Observatório Oceanico da Madeira-OOM). SL was financially supported by a post-doctoral grant form ARDITI (Regional Agency for Development of Research, Technology, and Innovation of Madeira), Project M1420-09-5369-FSE-000001.	pt_PT
dc.description.abstract	Sea 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.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Lourenço 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.2021.699942	pt_PT
dc.identifier.doi	10.3389/fmars.2021.699942	pt_PT
dc.identifier.issn	2296-7745
dc.identifier.uri	http://hdl.handle.net/10400.8/7548
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Frontiers	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Macaronesia region	pt_PT
dc.subject	Madeira archipelago	pt_PT
dc.subject	Sphaerechinus granularis	pt_PT
dc.subject	Gonad yield	pt_PT
dc.subject	Gonad color	pt_PT
dc.subject	Carotenoids	pt_PT
dc.subject	Fatty acids	pt_PT
dc.title	Population density, reproduction cycle and nutritional value of Sphaerechinus granularis (Echinodermata: Echinoidea) in an oceanic insular ecosystem	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.citation.title	Frontiers Marine Science	pt_PT
oaire.citation.volume	8	pt_PT
person.familyName	Pereira Lourenço
person.givenName	Sílvia Alexandra
person.identifier.ciencia-id	1E12-4289-7CF3
person.identifier.orcid	0000-0003-4426-0894
rcaap.rights	openAccess	pt_PT
rcaap.type	article	pt_PT
relation.isAuthorOfPublication	2a19ecab-df9d-4ced-807f-ae53ff9e9d2a
relation.isAuthorOfPublication.latestForDiscovery	2a19ecab-df9d-4ced-807f-ae53ff9e9d2a