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Genetic studies on species composition and population structure of sand eels (Genera: Ammodytes, Hyperoplus and Gymnammodytes) in Norwegian waters
Naevdal, G.; Thorkildsen, S. (2002). Genetic studies on species composition and population structure of sand eels (Genera: Ammodytes, Hyperoplus and Gymnammodytes) in Norwegian waters. J. Appl. Ichthyol. 18(3): 124-126
In: Journal of Applied Ichthyology = Zeitschrift für angewandte Ichthyologie. Blackwell: Berlin. ISSN 0175-8659, more
Peer reviewed article  

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Keywords
    Allelles; Check lists; Distribution; Genetics; Population structure; Ammodytes lanceolatus Le Sauvage, 1824 [WoRMS]; Ammodytes marinus Raitt, 1934 [WoRMS]; Ammodytes tobianus Linnaeus, 1758 [WoRMS]; Ammodytidae Bonaparte, 1835 [WoRMS]; Hyperoplus Günther, 1862 [WoRMS]; ANE, Norway [Marine Regions]; Marine; Brackish water

Authors  Top 
  • Naevdal, G.
  • Thorkildsen, S.

Abstract
    Five species of sand eels (Ammodytidae) are regularly found in the north-east Atlantic. Some of these species (i.e. Ammodytes tobianus L. and A. marinus Raitt) are difficult to identify by morphological criteria. The aims of the study reported were (a) to reveal unambiguous genetic traits for species classification and (b) to study possible population structure of the more common species in Norwegian waters. In total more than 900 specimens were analysed for inter- and intraspecific allozyme variation. Reference samples were obtained from Scotland and Denmark. By combining the patterns at different loci, all five species could be unambiguously defined. In Norwegian waters A. marinus was found together with minor numbers of Hyperoplus lanceolatus (Le Sauvage). As expected, Gymnammodytes semisquamatus (Jourdain) and H. immaculatus (Corbin) were not found, but not finding A. tobianus in these waters was unexpected. Distribution of alleles at three polymorphic loci did not indicate any structure of A. marinus in Norwegian waters.

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