Molecular divergence in the genus Thrichomys (Rodentia, Echimyidae)

Esteban D Braggio, C. R. Bonvicino

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Molecular analysis of cytochrome b (about 1,100 base pairs) in Brazilian Thrichomys specimens from Pantanal, Caatinga, and Cerrado confirmed the monophyly of this genus in neighbor joining, maximum parsimony, and likelihood analyses. Molecular and karyotypic analyses suggested that T. pachyurus (2n = 34), T. inermis (2n = 26), and Thrichomys sp. nov. (2n = 30) belonged to different evolutionary lineages. The grouping of T. apereoides populations with different karyotypes (2n = 28, FN = 52 or 50; 2n = 30, FN = 54) was difficult to explain unless by postulating a recent karyotypic differentiation and/or random extinction of lineages of an ancestral population in which the mitochondrial DNA polymorphism was present.

Original languageEnglish (US)
Pages (from-to)316-320
Number of pages5
JournalJournal of Mammalogy
Volume85
Issue number2
DOIs
StatePublished - Apr 2004
Externally publishedYes

Fingerprint

Echimyidae
caatinga
molecular analysis
cerrado
karyotype
Rodentia
mitochondrial DNA
cytochrome
polymorphism
extinction
divergence
Pantanal
Karyotype
Mitochondrial DNA
cytochrome b
Base Pairing
monophyly
karyotyping
Population
new species

Keywords

  • Cytochrome b DNA
  • Phylogeny
  • Rodentia
  • Thrichomys

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Molecular divergence in the genus Thrichomys (Rodentia, Echimyidae). / Braggio, Esteban D; Bonvicino, C. R.

In: Journal of Mammalogy, Vol. 85, No. 2, 04.2004, p. 316-320.

Research output: Contribution to journalArticle

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