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Génétique des populations de Sphaeroma serratum (F.) 16. Arguments pour considérer comme continue la structure des populations armoricaines = Population genetics of Sphaeroma serratum (F.). 16. Reasons to consider as continuous the population structure of Brittany
Cléret, J.-J.; Lejuez, R. (1983). Génétique des populations de Sphaeroma serratum (F.) 16. Arguments pour considérer comme continue la structure des populations armoricaines = Population genetics of Sphaeroma serratum (F.). 16. Reasons to consider as continuous the population structure of Brittany. Cah. Biol. Mar. 24(4): 443-457
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Cléret, J.-J.
  • Lejuez, R.

Abstract
    In order to realize a synthesis of the observations on Sphaeroma serratum polychromatism in 420 stations spreading on 1200km of Armorican coasts, a statistical approach is carried out to find whether the structure of the studied populations can be considered as continuous or discontinuous. Genetic distances between neighbouring samples show a distribution deprived of discontinuity and quite adjustable to a log-normal distribution. For an equal geographical distance, the variations between the specimens are not different, whether there is a physical contact between the populations (areas quite favourable to Sphaeroma) or no contact (samples separated by unfavourable areas). According to every tests, the hypothesis is confirmed that the structure of S. serratum populations can be considered as continuous on the scale of our observations.

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