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Polymorphism hides cryptic species in Oerstedia dorsalis (Nemertea, Hoplonemertea)
Sundberg, P.; Vodoti, E.T.; Zhou, H.; Strand, M. (2009). Polymorphism hides cryptic species in Oerstedia dorsalis (Nemertea, Hoplonemertea). Biol. J. Linn. Soc. 98(3): 556-567.
In: Biological Journal of the Linnean Society. Academic Press: London; New York. ISSN 0024-4066, more
Peer reviewed article  

Available in  Authors 

    DNA; Geographical distribution; Marine organisms; Phylogeny; Polymorphism; Population; Worms; Hoplonemertea [WoRMS]; Nemertea [WoRMS]; Oerstedia dorsalis (Abildgaard, 1806) [WoRMS]; Marine
Author keywords
    DNA sequences; population phylogeny; ribbon worm; species delimitation;statistical parsimony

Authors  Top 
  • Sundberg, P.
  • Vodoti, E.T.
  • Zhou, H.
  • Strand, M.

    The marine hoplonemertean Oerstedia dorsalis is considered to be a highly polymorphic species with extensive geographic distribution. We show, based on mitochondrial cytochrome c oxidase subunit I, 16S and nuclear internal transcribed spacer sequences, that there are genetic subsets withing this species. Seventy-one specimens of various colours from different geographic localities (in Europe) were sequenced and analysed using statistical parsimony and Bayesian analysis. Both analyses supported nine major clades. We conclude that O. dorsalis hides different species with geographic resolution. These species, however, appear to be polymorphic as well, and we find no diagnostic features in pigmentation or external characters to separate species within this complex

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