Abstract
Populations of mice established outdoors as well as indoors have been investigated at 24 loci using starch gel electrophoresis. Two reproductively isolated groups are recognized, one of which is referable to a house mouse subspecies, Mus musculus brevirostris, and the other to a different species, Mus spretus, contrary to the view of Schwarz and Schwarz that only one species of Mus is present in the Mediterranean Basin. The genetic distance between these two groups is larger than between any pair of investigated subspecies of M. musculus. M. m. brevirostris is biochemically almost indistinguishable from M. m. domesticus. On the other hand, M. spretus exhibits several allelic variants unknown or at most very infrequent in M. musculus, as for instance at the lactate dehydrogenase B-chain locus.
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This work was supported by research grants from the Centre National de la Recherche Scientifique (E.R.A. No. 261) and the Ecole Pratique des Hautes Etudes.
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Britton, J., Thaler, L. Evidence for the presence of two sympatric species of mice (genus Mus L.) in southern France based on biochemical genetics. Biochem Genet 16, 213–225 (1978). https://doi.org/10.1007/BF00484079
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DOI: https://doi.org/10.1007/BF00484079