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Genetic variation of the razor clam Ensis siliqua (Jeffreys 1875) along the European coast based on random amplified polymorphic DNA markers
Fernández-Tajes, J.; Gaspar, M.; Martinez-Patino, D.; McDonough, N.; Roberts, D.; Gonzalez-Tijon, A.; Martínez-Lage, A.; Mendez, J. (2007). Genetic variation of the razor clam Ensis siliqua (Jeffreys 1875) along the European coast based on random amplified polymorphic DNA markers. Aquac. Res. 38(11): 1205-1212. hdl.handle.net/10.1111/j.1365-2109.2007.01792.x
In: Aquaculture Research. Blackwell: Oxford. ISSN 1355-557X, more
Peer reviewed article

Keywords
    Ensis siliqua (Linnaeus, 1758) [WoRMS]; Marine
Author keywords
    Ensis siliqua; razor clam; RAPD; genetic variation

Authors  Top 
  • Fernández-Tajes, J.
  • Gaspar, M.
  • Martinez-Patino, D.
  • McDonough, N., more
  • Roberts, D.
  • Gonzalez-Tijon, A.
  • Martínez-Lage, A.
  • Mendez, J.

Abstract
    Ensis siliqua is regarded as an increasingly valuable fishery resource with potential for commercial aquaculture in many European countries. The genetic variation of this razor clam was analysed by randomly amplified polymorphic DNA (RAPD) in six populations from Spain, Portugal and Ireland. Out of the 40 primers tested, five were chosen to assess genetic variation. A total of 61 RAPD loci were developed ranging in size from 400 to 2000 bp. The percentages of polymorphic loci, the allele effective number and the genetic diversity were comparable among populations, and demonstrated a high level of genetic variability. The values of Nei's genetic distance were small among the Spanish and Portuguese populations (0.051–0.065), and high between these and the Irish populations. Cluster and principal coordinate analyses supported these findings. A mantel test performed between geographic and genetic distance matrices showed a significant correlation (r=0.84, P<0.05), suggesting an isolation by distance process.

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