Chromosomal phylogeny of certain shrews of the genera Crocidura and Suncus (Insectivora) |
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| Authors: | Biltueva,Rogatcheva,Perelman,Borodin,Oda,Koyasu,Harada,Zima,& Graphodatsky |
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| Affiliation: | Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, Russia;Laboratory of Animal Management, School of Agricultural Sciences, Nagoya University, Japan;Institute of Biology, Federal University of Rio de Janeiro, Brazil;The Second Department of Anatomy, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan;Laboratory Animal Center, Osaka University Medical School, Japan;Institute of Vertebrate Biology AS CR, Brno, Czech Republic;Department of Zoology, Charles University, Praha, Czech Republic |
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| Abstract: | High-resolution chromosome analysis of eight Palaearctic and Oriental species of white-toothed shrews reveals almost complete chromosomal homology between the karyotypes studied, and extensive G-band homology is demonstrated even between species of the genera Crocidura and Suncus . Robertsonian translocations, tandem fusions, fissions, whole-arm reciprocal translocations, centromeric shifts, heterochromatin additions, and inversions are identified as the main mechanisms of chromosomal evolution. The evolutionary relationships of the Eurasian crocidurines under study are reconstructed and a hypothetical ancestral karyotype with 44 chromosomes is proposed. |
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| Keywords: | Mammalia Crocidura Suncus karyotypes comparative analysis |
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