|A comparative study of the chromosomes of Mytilus edulis and Mytilus galloprovincialis|
Dixon, D.R.; Flavell, N. (1986). A comparative study of the chromosomes of Mytilus edulis and Mytilus galloprovincialis. J. Mar. Biol. Ass. U.K. 66(1): 219-228
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
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The chromosomes of the marine mussel M. edulis, from Whitsand Bay, SE Cornwall and Robin Hood's Bay, N. Yorkshire, were compared with those of the Mediterranean mussel, M. galloprovincialis, from Venice. Chromosome counts made on cell preparations from gill tissues showed that both species have a diploid chromosome number of 28. In M. edulis and M. galloprovincialis the karyotope consists of 6 metacentric pairs and a variable number of submetacentric and subtelocentric pairs. There was a marked degree of similarity between the karyotypes of both species in terms of chromosome size. Mean arm ratio similarly showed little interpopulation variations in the case of the 6 metacentric pairs. The resutls of this study do not support the existence of a major chromosomal difference between M. edulis and M. galloprovincialis.