Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations

Abstract Cystoseira sensu lato (Class Phaeophyceae, Order Fucales, Family Sargassaceae) forests play a central role in marine Mediterranean ecosystems. Over the last decades, Cystoseira s.l. suffered from a severe loss as a result of multiple anthropogenic stressors. In particular, Gongolaria barbat...

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Autores principales:	Florentine Riquet, Christiane-Arnilda De Kuyper, Cécile Fauvelot, Laura Airoldi, Serge Planes, Simonetta Fraschetti, Vesna Mačić, Nataliya Milchakova, Luisa Mangialajo, Lorraine Bottin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/12efe2102c114d22811b41aef6701c02
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spelling	oai:doaj.org-article:12efe2102c114d22811b41aef6701c022021-12-02T15:10:54ZHighly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations10.1038/s41598-021-96027-x2045-2322https://doaj.org/article/12efe2102c114d22811b41aef6701c022021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96027-xhttps://doaj.org/toc/2045-2322Abstract Cystoseira sensu lato (Class Phaeophyceae, Order Fucales, Family Sargassaceae) forests play a central role in marine Mediterranean ecosystems. Over the last decades, Cystoseira s.l. suffered from a severe loss as a result of multiple anthropogenic stressors. In particular, Gongolaria barbata has faced multiple human-induced threats, and, despite its ecological importance in structuring rocky communities and hosting a large number of species, the natural recovery of G. barbata depleted populations is uncertain. Here, we used nine microsatellite loci specifically developed for G. barbata to assess the genetic diversity of this species and its genetic connectivity among fifteen sites located in the Ionian, the Adriatic and the Black Seas. In line with strong and significant heterozygosity deficiencies across loci, likely explained by Wahlund effect, high genetic structure was observed among the three seas (ENA corrected FST = 0.355, IC = [0.283, 0.440]), with an estimated dispersal distance per generation smaller than 600 m, both in the Adriatic and Black Sea. This strong genetic structure likely results from restricted gene flow driven by geographic distances and limited dispersal abilities, along with genetic drift within isolated populations. The presence of genetically disconnected populations at small spatial scales (< 10 km) has important implications for the identification of relevant conservation and management measures for G. barbata: each population should be considered as separated evolutionary units with dedicated conservation efforts.Florentine RiquetChristiane-Arnilda De KuyperCécile FauvelotLaura AiroldiSerge PlanesSimonetta FraschettiVesna MačićNataliya MilchakovaLuisa MangialajoLorraine BottinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Florentine Riquet Christiane-Arnilda De Kuyper Cécile Fauvelot Laura Airoldi Serge Planes Simonetta Fraschetti Vesna Mačić Nataliya Milchakova Luisa Mangialajo Lorraine Bottin Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
description	Abstract Cystoseira sensu lato (Class Phaeophyceae, Order Fucales, Family Sargassaceae) forests play a central role in marine Mediterranean ecosystems. Over the last decades, Cystoseira s.l. suffered from a severe loss as a result of multiple anthropogenic stressors. In particular, Gongolaria barbata has faced multiple human-induced threats, and, despite its ecological importance in structuring rocky communities and hosting a large number of species, the natural recovery of G. barbata depleted populations is uncertain. Here, we used nine microsatellite loci specifically developed for G. barbata to assess the genetic diversity of this species and its genetic connectivity among fifteen sites located in the Ionian, the Adriatic and the Black Seas. In line with strong and significant heterozygosity deficiencies across loci, likely explained by Wahlund effect, high genetic structure was observed among the three seas (ENA corrected FST = 0.355, IC = [0.283, 0.440]), with an estimated dispersal distance per generation smaller than 600 m, both in the Adriatic and Black Sea. This strong genetic structure likely results from restricted gene flow driven by geographic distances and limited dispersal abilities, along with genetic drift within isolated populations. The presence of genetically disconnected populations at small spatial scales (< 10 km) has important implications for the identification of relevant conservation and management measures for G. barbata: each population should be considered as separated evolutionary units with dedicated conservation efforts.
format	article
author	Florentine Riquet Christiane-Arnilda De Kuyper Cécile Fauvelot Laura Airoldi Serge Planes Simonetta Fraschetti Vesna Mačić Nataliya Milchakova Luisa Mangialajo Lorraine Bottin
author_facet	Florentine Riquet Christiane-Arnilda De Kuyper Cécile Fauvelot Laura Airoldi Serge Planes Simonetta Fraschetti Vesna Mačić Nataliya Milchakova Luisa Mangialajo Lorraine Bottin
author_sort	Florentine Riquet
title	Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
title_short	Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
title_full	Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
title_fullStr	Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
title_full_unstemmed	Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
title_sort	highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/12efe2102c114d22811b41aef6701c02
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Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations

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