Chromosome banding analysis of two shrews of the cinereus group: Sorex haydeni and Sorex cinereus (Insectivora, Soricidae)

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Abstract
The chromosomes of Sorex haydeni are described for the first time and their banding pattern (R- and C-bands) compared with that of Sorex cinereus. The karyotype of S. haydeni differs from that of S. cinereus in its diploid (64 vs. 66) and fundamental numbers (66 vs. 70). These differences are the result of one tandem translocation and one pericentric inversion. The size and form of the Y chromosomes are also quite different in these taxa. The karyotypic differences strongly support the status of independent species, proposed for these taxa earlier on the basis of gross morphological characters.

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