Genetic diversity in Xenarthra and its relevance to patterns of neotropical biodiversity

Autor(es)

Moraes-Barros, Nadia ^{[1, 2]} ; Clara Arteaga, Maria ^[3]

Afiliação do(s) autor(es)

^[1] Univ Porto, Ctr Invest Biodiversidade & Recursos Genet, Cibo InBio Lab Associado, P-4485661 Vairao - Portugal

^[2] Univ Sao Paulo, Inst Biociencias, Dept Genet & Biol Evolut, Lab Biol Evolut & Conservacao Vertebrados LABEC, BR-05508090 Sao Paulo - Brazil

^[3] CICESE, Dept Biol Conservac, Ensenada 22860, Baja California - Mexico

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MAMMALOGY; v. 96, n. 4, p. 690-702, AUG 2015.
• Citações Web of Science: 13

Resumo

Here, we review population genetic, phylogeographic, and phylogenetic studies on xenarthrans and show how this information fits in current discussions about patterns of diversification within the Neotropics. Specifically, we focus on how the genetic diversity of xenarthrans has been shaped by important historical processes such as Andean uplift, the Great American Biotic Interchange, and fluctuating linkages between the Amazon and Atlantic forests. We also describe latitudinal patterns of differentiation within the Atlantic forest and discuss how these might have been generated. Even with the modest amount of information currently available, our comparative analyses indicate 3 things: the Andes may have promoted events of intraspecific divergence for at least 2 xenarthran species; the biogeographic history of the Neotropical rain forests influenced the divergence of clades in sloths; and inter- and intra-specific genetic patterns reveal a very high diversity in xenarthrans, probably higher than currently recognized from morphological data. Finally, we highlight Xenarthra as an appropriate model for investigating biogeographic patterns in the Neotropics and also point to additional directions to be taken in future studies of this unique mammal group. (AU)

• Processo FAPESP: 03/03212-7 - Origem e dispersao das populacoes de preguicas:estudo filogeografico e aspectos de conservacao biologica.
• Beneficiário: Nadia de Moraes Barros
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado