Comparative phylogeography of the Atlantic forest endemic sloth (Bradypus torquatus) and the widespread three-toed sloth (Bradypus variegatus) (Bradypodidae, Xenarthra)

The comparative phylogeographic study of the maned sloth (Bradypus torquatus) and the three-toed sloth (Bradypus variegatus) was performed using a segment of mitochondrial DNA (mtDNA) control region. We examined 19 B. torquatus from two regions and 47 B. variegatus from three distant regions of Atla...

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Bibliographic Details
Published in:Genetica 2006-01, Vol.126 (1-2), p.189-198
Main Authors: de Moraes-Barros, Nadia, Silva, Juliana A B, Miyaki, Cristina Y, Morgante, J S
Format: Article
Language:English
Subjects:
Animals
Bradypodidae
Bradypus torquatus
Bradypus variegatus
Brazil
DNA, Mitochondrial
Evolution
Forests
Genetic Variation
Genetics
Geography
Haplotypes
Locus Control Region - genetics
Mitochondria
Mitochondria - genetics
Mitochondrial DNA
Phylogeny
Sloths - genetics
Xenarthra
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Summary:The comparative phylogeographic study of the maned sloth (Bradypus torquatus) and the three-toed sloth (Bradypus variegatus) was performed using a segment of mitochondrial DNA (mtDNA) control region. We examined 19 B. torquatus from two regions and 47 B. variegatus from three distant regions of Atlantic forest. This first characterization of molecular diversity indicates a great diversity (B. torquatus: h = 0.901 +/- 0.039 and pi = 0.012 +/- 0.007; B. variegatus: h = 0.699 +/- 0.039 and pi = 0.010 +/- 0.006) and very divergent mitochondrial lineages within each sloth species. The different sampled regions carry distinct and non-overlapping sets of mtDNA haplotypes and are genetically divergent. This phylogeographic pattern may be characteristic of sloth species. In addition, we infer that two main phylogeographic groups exist in the Atlantic forest representing a north and south distinct divergence.
ISSN:0016-6707
1573-6857
DOI:10.1007/s10709-005-1448-x