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      Comparative cytogenetics of two species of Dermanura (Chiroptera, Phyllostomidae) in Midwestern Brazil

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          Abstract

          Dermanura Gervais, 1856 is represented by small frugivorous bats of the Stenodermatinae subfamily. The taxonomy of this group presents controversies and has been subject to changes, especially since the morphological characters evaluated have left gaps that are difficult to fill regarding good species characterization. Previous studies performed in Dermanura cinerea Gervais, 1856 found that the karyotype of this species has a diploid number of chromosomes equal to 30 and 56 autosomal arms. The objective of the present study was to describe, for the first time, the karyotypes of the species Dermanura anderseni (Osgood, 1916) and Dermanura gnoma (Handley, 1987) based on classical cytogenetic markers. For both species, the diploid number found was 2n = 30 and NFa = 56. Two pairs of chromosomes showed markings of the nucleolus organizing regions (AgNORs) in the species D. anderseni and only one pair in D. gnoma , differing from what has already been described for D. cinerea . The two species analyzed here also showed differences in the sex chromosome system, with D. gnoma showing a neo-XY type system while in D. anderseni the classic XY sexual system was observed. In both species, visualization of the constitutive heterochromatin occurred in the pericentromeric region of all chromosomes, as well as in the short arms of the subtelocentric chromosomes. The present work represents an important expansion of karyotypic information for the subfamily Stenodermatinae , bringing chromosomal features that are possible to use in the taxonomic implications of the group.

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          Most cited references 53

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          A simple technique for demonstrating centromeric heterochromatin.

           A.T. Sumner (1972)
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            Molecular systematics of the genus Artibeus (Chiroptera: Phyllostomidae).

            A molecular phylogeny of the genus Artibeus using 19 of the 20 recognized species, many with samples from a broad geographic range, is presented. The analysis shows a clear distinction between the two subgenera (or genera), the 'large'Artibeus and the 'small'Dermanura, in both mitochondrial and nuclear genes. The placement and status of A. concolor remains inconclusive and is presented as the third subgenus Koopmania. The phylogenies and divergence time estimates show a marked influence of the Andes in the formation of the subgenera and the main lineages inside each subgenus. Nuclear genes showed a highly incomplete lineage sorting among species inside subgenera Artibeus and Dermanura. Indeed, shared alleles were also found between Artibeus and Koopmania, which are presumed to have split apart during the Miocene, showing that great care should be taken in using these markers. Cytochrome-b gene divergences and monophyly analyses suggest that A. lituratus and A. intermedius are indeed conspecifics. These analyses also suggested the existence of at least four 'new' species revealing a significant cryptic diversity inside the genus.
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              Controlled silver-staining of nucleolus organizer regions with a protective colloidal developer: a 1-step method

               W Howell,  D. Black (1980)
              Experientia, 36(8), 1014-1015
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                Author and article information

                Contributors
                Journal
                Comp Cytogenet
                Comp Cytogenet
                8
                urn:lsid:arphahub.com:pub:A71ED5FC-60ED-5DA3-AC8E-F6D2BB5B3573
                urn:lsid:zoobank.org:pub:C8FA3ADA-5585-4F26-9215-A520EE683979
                Comparative Cytogenetics
                Pensoft Publishers
                1993-0771
                1993-078X
                2021
                02 April 2021
                : 15
                : 2
                : 89-99
                Affiliations
                [1 ] Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal do Mato Grosso – UFMT. Av. Fernando Corrêa da Costa, n° 2367, Bairro Boa Esperança. Cuiabá – MT, Brazil Universidade Federal do Mato Grosso Cuiabá Brazil
                [2 ] Faculdade de Ciências Agrárias, Biológicas e Sociais Aplicadas, Universidade do Estado de Mato Grosso, Av. Prof. Dr. Renato Figueiro Varella, s/n, Nova Xavantina, MT, Brazil Universidade Federal do Mato Grosso Cuiabá Brazil
                Author notes
                Corresponding author: Karina de Cassia Faria ( Karinafaria@ 123456unemat.br )

                Academic editor: S.V. Pavlova

                Article
                60577
                10.3897/CompCytogen.v15i2.60577
                8035126
                Ricardo Firmino de Sousa, Paulo Cesar Venere, Karina de Cassia Faria

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Chiroptera
                Phyllostomidae
                Molecular Cytogenetics
                Cenozoic
                Brazil

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