Random amplified polymorphic DNA assessment of diversity in western Mediterranean populations of the seagrass Posidonia oceanica |
| |
Authors: | Jover Maria Angeles Del Castillo-Agudo Lucas Garcia-Carrascosa Manuel Segura Juan |
| |
Institution: | Laboratorio de Biología Marina, Departamento de Biología Animal, Universidad de Valencia, Valencia, Spain; |
| |
Abstract: | Posidonia oceanica is an endemic Mediterranean seagrass species that has often been assumed to contain low levels of genetic diversity. Random amplified polymorfic DNA (RAPD) markers were used to assess genetic diversity among five populations from three geographical regions (north, central, and south) of the western Mediterranean Sea. Stranded germinating seeds from one of the central populations were also included in the analysis. Forty-one putative genets were identified among 76 ramets based on 28 RAPD markers. Genotypic diversity strongly depended on the spatial structure, age, and maturity of the meadows. The lowest clonal diversity was found in the less structured and youngest prairies. Conversely, a high genotypic diversity was found in the highly structured meadows. The genotypic diversity in these meadows was at the same level as in P. australis and higher than previously reported data for P. oceanica populations in the Tyrrhenian Sea near the coast of Italy. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|