English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/47970
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Living Together but Remaining Apart: Atlantic and Mediterranean Loggerhead Sea Turtles (Caretta caretta) in Shared Feeding Grounds

AuthorsCarreras, Carlos ; Pascual, Marta; Cardona, Luis; Marco, Adolfo ; Bellido, Juan Jesús; Castillo, Juan José; Tomás, Jesús; Raga, Juan Antonio; Sanfélix, Manuel; Fernández, Gloria
KeywordsGene flow
isolation
microsatellite DNA
Mitochondrial DNA
Issue DateJun-2011
PublisherOxford University Press
CitationJournal of Heredity 2011:102(6):666–677
AbstractJuvenile loggerhead sea turtles (Caretta caretta) from Atlantic nesting populations migrate into the western Mediterranean, where they share feeding grounds with turtles originating in the Mediterranean. In this scenario, male-mediated gene flow may lead to the homogenization of these distant populations. To test this hypothesis, we genotyped 7 microsatellites from 56 Atlantic individuals sampled from feeding grounds in the western Mediterranean and then compared the observed allele frequencies with published data of 112 individuals from Mediterranean nesting beaches. Mediterranean populations were found to be genetically differentiated from the Atlantic stock reaching the western Mediterranean (Fst 5 0.029, P , 0.001); therefore, the possible mating events between Atlantic and Mediterranean individuals are not sufficient to homogenize these 2 areas. The differentiation observed between these 2 areas demonstrates that microsatellites are sufficiently powerful for mixed stock analysis and that individual assignment (IA) tests can be performed in combination with mitochondrial DNA (mtDNA) analysis. In a set of 197 individuals sampled in western Mediterranean feeding grounds, 87% were robustly assigned to Atlantic or Mediterranean groups with the combined marker, as compared with only 52% with mtDNA alone. These findings provide a new approach for tracking the movements of these oceanic migrants and have strong implications for the conservation of the species
Publisher version (URL)http://dx.doi.org/10.1093/jhered/esr089
URIhttp://hdl.handle.net/10261/47970
DOI10.1093/jhered/esr089
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
666.full.doc1,27 MBMicrosoft WordView/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.