Laephotis kirinyaga Monadjem, Patterson, Webala and Demos, 2021

Volleth, Marianne, Mayer, Frieder, Heller, Klaus-Gerhard, Müller, Stefan & Fahr, Jakob, 2023, Karyotype comparison of five African Vespertilionini species with comments on phylogenetic relationships and proposal of a new subtribe, Acta Chiropterologica 25 (1), pp. 35-52 : 39

Laephotis kirinyaga Monadjem, Patterson, Webala and Demos, 2021

The diploid chromosome number of the male studied was 2n = 32, the fundamental number of autosomal arms was FNa = 50. The karyotype comprised nine large- to medium-sized meta- to submetacentric, one small metacentric and five small acrocentric autosomal pairs ( Fig. 1 ). Four metacentric pairs similar to that of the vespertilionid basic karyotype (2n = 44, numbering of chromosomal arms as in the genus Myotis ) were present. Further, Robertsonian fusion products were identified according to the G-banding pattern with the following arm combinations: 7/11, 8/9, 10/12, 13/18, 14/20 and 15/21. Chromosomes 19 and 22 to 25 were acrocentric elements. The X chromosome was a medium-sized metacentric chromosome with the banding pattern characteristic for Vespertilionini and Pipistrellini (state II — Volleth and Heller, 1994). The Y chromosome was about of the same size as chromosome 23 and consisted largely of heterochromatic material. Chromosomes 1/2, 11, 12 and 15 were present in state II as in other members of the tribe Vespertilionini . The nucleolus organizing regions (NORs) were located at the secondary constriction (SC) of arm 15. C-band positive heterochromatin was present only at the centromeres and the Y chromosome.

Figures

FIG. 1. G-banded karyotype of a male L. kirinyaga, 2n = 32. Chromosomal arms are numbered according to the scheme of Bickham (1979) for Myotis species. The nucleolus organizer region (NOR) is indicated by an arrowhead