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Vol. 51 No. 7, 2012
The Eastern Boundary of the Brazilian Cerrado: A Hotspot
Region
Cibele
R. Bonvicino1,2,*, Scott M. Lindbergh3, Michel Barros Faria4, and
Alexandra M.R. Bezerra5
1Programa
de Genética, Instituto Nacional de Câncer, Rio de Janeiro, CEP
20231-050, RJ, Brazil
2Laboratório de Biologia e Parasitologia de Mamíferos
Reservatórios Silvestres, IOC, Fiocruz, CEP 21045-900, Rio de Janeiro,
RJ, Brazil
3Sucuri Consultoria Ambiental, Brasília, DF, Brazil
4Pós Graduação em Genética, Universidade Federal do
Rio de Janeiro, CEP 21944-970, Rio de Janeiro, RJ, Brazil
5Departamento de Zoologia, Universidade de Brasília,
CEP 70910-900, Brasília, DF, Brazil
Cibele R. Bonvicino, Scott M. Lindbergh,
Michel Barros Faria, and Alexandra M.R. Bezerra (2012) The
nonflying small-mammal fauna of the eastern Cerrado domain of central
Brazil, Trijunção region, Bahia and Goiás States, was surveyed and
karyotyped in the dry and wet seasons. Four marsupial and 15
rodent species were captured, 5 of which are endemic to the Cerrado
morphoclimatic domain. Some species were captured only in the dry
season, and others only in the wet season. Species showed
different habitat use during the year. Dryseason trap success was
higher in wetland habitats, while rainy-season trap success was higher
in dry habitats. These findings suggest that the season
influences the presence and/or activity of some species in the
different physiognomies. The geographic distribution of small
rodents endemic to the Cerrado and the high number of endemic species
in the study region point to the eastern Cerrado as another hotspot of
this domain.
Key words: Cerrado, Endemism, Karyotype,
Non-volant small mammals.
*Correspondence: Tel: 55-21-32076586.
E-mail:cibelerb@inca.gov.br
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