Chromosomal analysis of three Brazilian eleutherodactyline frogs (Anura : Terrarana), with suggestion of a new species

Chromosomal analysis of three Brazilian eleutherodactyline frogs (Anura : Terrarana), with suggestion of a new species

Author Siqueira, Sergio Google Scholar
Aguiar, Odair Autor UNIFESP Google Scholar
Struessmann, Christine Google Scholar
Del-Grande, Maria Lucia Google Scholar
Recco-Pimentel, Shirlei Maria Google Scholar
Institution Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Univ Fed Mato Grosso
Univ Estadual Sudoeste Bahia
Abstract The karyotypes of four Brazilian eleutherodactyline samples were analyzed aiming to provide additional cytogenetic data for future understanding of the evolutionary and systematic relationships of this large anuran group. The populations consisted of Pristimantis dundeei (Chapada dos Guimaraes and Rondonopolis, Mato Grosso), Pristimantis aff. dundeei (Aripuana, Mato Grosso) and Ischnocnema paulodutrai (Ilheus, Bahia). The data revealed that P. dundeei and P. aff. dundeei have 2n=28 chromosomes, whereas I. paulodutrai has 2n=30. All pairs of chromosomes were telocentric, except for the subtelocentric pair 4 in I. paulodutrai. Differences in Ag-NOR pattern and interstitial heterochromatin positions clearly distinguished P. aff. dundeei from P. dundeei, and differentiated them from I. paulodutrai. The specimens of I. paulodutrai showed two distinct color patterns, but they did not differ in their cytogenetic characteristics. Karyotypes with 2n=28 and 2n=30 chromosomes have not been previously described for Brazilian eleutherodactylines which, to date, had been characterized as 2n=20, 2n=22 and 2n=34. The NOR position differences identified between P. dundeei and P. aff. dundeei, allied to their known distinct behavior and ecological data, suggested that the P. aff. dundeei from the Aripuana sampling location is a new species. Similarities between I. paulodutrai and species currently assigned to Pristimantis are herein discussed on the basis of chromosome number and morphological characteristics.
Keywords Pristimantis
Ischnocnema
cytogenetics
karyotype
NOR
C-banding
Language English
Sponsor Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 06/61738-3
Date 2008-09-01
Published in Zootaxa. Auckland: Magnolia Press, n. 1860, p. 51-59, 2008.
ISSN 1175-5326 (Sherpa/Romeo, impact factor)
Publisher Magnolia Press
Extent 51-59
Origin http://mapress.com/zootaxa/list/2008/zt01860.html
Access rights Closed access
Type Article
Web of Science ID WOS:000258830700004
URI http://repositorio.unifesp.br/11600/45767

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