Regional Genetic Structure in the Aquatic Macrophyte Ruppia cirrhosa Suggests Dispersal by Waterbirds

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Título: Regional Genetic Structure in the Aquatic Macrophyte Ruppia cirrhosa Suggests Dispersal by Waterbirds
Autor/es: Martínez-Garrido, Jose | Bermejo, Ricardo | Serrão, Ester A. | Sánchez-Lizaso, José Luis | González-Wangüemert, Mercedes
Grupo/s de investigación o GITE: Biología Marina | Recursos Hídricos y Desarrollo Sostenible
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
Palabras clave: Ruppia | Connectivity patterns | Genotypic diversity | Waterfowl | Coastal lagoon
Área/s de conocimiento: Zoología
Fecha de publicación: nov-2017
Editor: Springer US
Cita bibliográfica: Estuaries and Coasts. 2017, 40(6): 1705-1716. doi:10.1007/s12237-017-0247-9
Resumen: The evolutionary history of the genus Ruppia has been shaped by hybridization, polyploidisation and vicariance that have resulted in a problematic taxonomy. Recent studies provided insight into species circumscription, organelle take-over by hybridization, and revealed the importance of verifying species identification to avoid distorting effects of mixing different species, when estimating population connectivity. In the present study, we use microsatellite markers to determine population diversity and connectivity patterns in Ruppia cirrhosa including two spatial scales: (1) from the Atlantic Iberian coastline in Portugal to the Siculo–Tunisian Strait in Sicily and (2) within the Iberian Peninsula comprising the Atlantic–Mediterranean transition. The higher diversity in the Mediterranean Sea suggests that populations have had longer persistence there, suggesting a possible origin and/or refugial area for the species. The high genotypic diversities highlight the importance of sexual reproduction for survival and maintenance of populations. Results revealed a regional population structure matching a continent–island model, with strong genetic isolation and low gene flow between populations. This population structure could be maintained by waterbirds, acting as occasional dispersal vectors. This information elucidates ecological strategies of brackish plant species in coastal lagoons, suggesting mechanisms used by this species to colonize new isolated habitats and dominate brackish aquatic macrophyte systems, yet maintaining strong genetic structure suggestive of very low dispersal.
Patrocinador/es: This study was funded by the Fundação para a Ciência e Tecnologia (FCT, Portugal) PTDC/MAR/119363/2010, BIODIVERSA/0004/2015, UID/Multi/04326/2013, the Pew Foundation, and the SENECA Foundation, Murcia Government, Spain (11881/PI/09). MGW was supported by the FCT Investigator Programme—Career Development (IF/00998/2014). During the development of this work, R. Bermejo held a Formación de Personal Universitario (FPU) (AP2008-01209) fellowship from the Spanish Ministry of Education and an ASSEMBLE (Association of European Marine Biological Laboratories) grant (Ref. 00399/2012) from the European Community.
ISSN: 1559-2723 (Print) | 1559-2731 (Online)
DOI: 10.1007/s12237-017-0247-9
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © Coastal and Estuarine Research Federation 2017
Revisión científica: si
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Aparece en las colecciones:INV - BM - Artículos Científicos / Scientific Papers
INV - Recursos Hídricos y Desarrollo Sostenible - Artículos de Revistas

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