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Isoenzyme taxonomy applied on four species of Cardium from Danish and British waters with a short description of the distribution of the species. (Bivalvia)
Jelnes, J.E.; Petersen, G.H.; Russell, P.J.R. (1971). Isoenzyme taxonomy applied on four species of Cardium from Danish and British waters with a short description of the distribution of the species. (Bivalvia). Ophelia 9(1): 15-19. hdl.handle.net/10.1080/00785326.1971.10430087
In: Ophelia: International Journal of Marine Biology. Ophelia Publications: Helsingør. ISSN 0078-5326, more
Peer reviewed article  

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Keywords
    Cardium edule Linnaeus, 1758 [WoRMS]; Cardium exiguum Gmelin, 1791 [WoRMS]; Cardium glaucum Poiret, 1789 [WoRMS]; Cardium hauniense Petersen & Russell, 1971 [WoRMS]; Marine

Authors  Top 
  • Jelnes, J.E.
  • Petersen, G.H.
  • Russell, P.J.R.

Abstract
    Replicate experiments, using maleic acid-TRIS-EDTA-MgCl2 buffer, showed that the four morphospecies, Cardium edule, C. glaucum, C. exiguum, and C. hauniense, corresponded to four different electrophoretic patterns, of which those of C. edule and C. hauniense showed a clear pattern and of C. glaucum and C. exiguum showed tailing electrophoresis. Replicate comparative experiments, using borate buffer, showed that the electrophoretic patterns from samples of C. edule from two different localities were very similar, as were those from C. glaucum from three different localities.
    We concluded that the four morphospecies were valid species and that there was no tendency towards subspeciation in C. edule or C. glaucum. A short review of the morphology and biology of the species has been included as a background to this study. We concluded that the four morphospecies were valid species and that there was no tendency towards subspeciation in C. edule or C. glaucum. A short review of the morphology and biology of the species has been included as a background to this study.

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