Considerations of karyotypic evolution within Vespertilionidae

Abstract

The karyotypes of each 2 species of Nyctalus and Murina are examined. It is assumed that the diploid number of vespertilionid ancestor was 44 with a fundamental number of 50 and that the mechanism of karyotypic evolution within subfamily Vespertilioninae is mainly caused by centric fusion. On the other hand, the karyotypic alteration of subfamily Murininae may be evolved by non-Robertsonian translocation. © 1977 Birkhäuser Verlag.