Comparative cytogenetic analysis in the species Uroderma magnirostrum and U. bilobatum (cytotype 2n = 42) (Phyllostomidae, Stenodermatinae) in the Brazilian Amazon

Abstract

The genus Uroderma includes two species: U. magnirostrum and U. bilobatum. These species are characterized by their high degree of karyotypic evolution, diverging from most other species of the subfamily Stenodermatinae, which have a lower degree of chromosomic evolution. The present study reports the first banding patterns of U. magnirostrum (G-, C-banding and Ag-NOR) and U. bilobatum (C-banding and Ag-NOR). The chromosomic data in conventional staining of U. magnirostrum (2n = 36, NF = 62) and U. bilobatum (cytotype 2n = 42, NF = 50) are equivalent to that described in the literature. When compared, chromosomal homeologies are found in both karyotypes, as well as differences, confirming that karyotypic evolution in the Uroderma genus is intense. Fission, fusion, inversion or translocation events are required to explain the karyotypic evolution of this genus. The comparison of karyotype, described here, to one of the species of the genus Artibeus (2n = 30/31), suggests that some chromosomic forms are apomorphic and shared between the two species of Uroderma. This confirms the monophyly of the genus, and that U. magnirostrum presents a more primitive karyotype when compared to U. bilobatum.

Cytogenetics and DNA barcoding of the Round-eared bats, Tonatia (Chiroptera: Phyllostomidae): a new karyotype for Tonatia bidens

“…The Ag-NORs described here for the new karyotype of T. bidens were observed on the smallest pair of acrocentric chromosomes (pair 13). The constitutive heterochromatin found in the pericentromeric region of the chromosomes of T. bidens and in the pericentromeric and interstitial regions of some of the chromosomes of T. saurophila was consistent with the pattern observed in other studies of phyllostomine bats , MORIELLE-VERSUTE et al 1996, SANTOS et al 2001, SILVA et al 2005, BARROS et al 2009, GOMES et al 2010.…”

“…In some genera, however, considerable variation is found in the diploid and fundamental numbers , SILVA et al 2005). The marked diploid number variation found in the Tonatia species is not unique Figure 12.…”

Phylogenetic Reconstruction by Cross-Species Chromosome Painting and G-Banding in Four Species of Phyllostomini Tribe (Chiroptera, Phyllostomidae) in the Brazilian Amazon: An Independent Evidence for Monophyly

“…Most genera of phyllostomid bats have highly conserved karyotypes, but there are extensive karyotypic variations among some genera, which make intergeneric comparison by G-banding almost impossible [ 13 , 41 , 46 , 48 ]. In contrast, it is possible to find chromosomal homeologies in all genera of Phyllostominae, except for Tonatia [ 9 ].…”

Biogeographical karyotypic variation of Rhinophylla fischerae (Chiroptera: Phyllostomidae) suggests the occurrence of cryptic species

“…There are few cytogenetic studies on bats from Brazilian Amazonia (Rodrigues et al, , 2003Neves et al, 2000;Ribeiro et al, 2003;Silva et al, 2005;Pieczarka et al, 2005). The results of these studies have shown that the Phyllostomidae has a high intrafamiliar karyotypic variation and often new species have been detected fi rst by different karyotypes.…”