TY - JOUR
T1 - Phylogenetic relationships of the pygmy rice rats of the genus Oligoryzomys Bangs, 1900 (Rodentia: Sigmodontinae)
AU - Palma, R. Eduardo
AU - Rodríguez-Serrano, Enrique
AU - Rivera-Milla, Eric
AU - Hernandez, Cristian E.
AU - Salazar-Bravo, Jorge
AU - Carma, Maria I.
AU - Belmar-Lucero, Sebastian
AU - Gutierrez-Tapia, Pablo
AU - Zeballos, Horacio
AU - Yates, Terry L.
PY - 2010/11
Y1 - 2010/11
N2 - Sequences from two mitochondrial genes (cytochrome b and NADH1) were used to produce a molecular phylogeny for 12 named and two undescribed species of the genus Oligoryzomys. All analyses placed Oligoryzomys microtis as the most basal taxon, a finding consistent with previous studies that suggested the west-central Amazon as a centre of origin for the tribe Oryzomyini to which Oligoryzomys belongs. Biogeographically, this suggests that Oligoryzomys had a South American origin, and later advanced northwards, entering Central America and Mexico more recently. Different analyses have provided consistent support for several additional clades that did not necessarily agree with the species groups hypothesized by previous studies. A molecular clock derived for these data suggests an origin for the genus of 6.67 Mya, with most speciation within the genus occurring between 3.7 and 1.5 Mya.
AB - Sequences from two mitochondrial genes (cytochrome b and NADH1) were used to produce a molecular phylogeny for 12 named and two undescribed species of the genus Oligoryzomys. All analyses placed Oligoryzomys microtis as the most basal taxon, a finding consistent with previous studies that suggested the west-central Amazon as a centre of origin for the tribe Oryzomyini to which Oligoryzomys belongs. Biogeographically, this suggests that Oligoryzomys had a South American origin, and later advanced northwards, entering Central America and Mexico more recently. Different analyses have provided consistent support for several additional clades that did not necessarily agree with the species groups hypothesized by previous studies. A molecular clock derived for these data suggests an origin for the genus of 6.67 Mya, with most speciation within the genus occurring between 3.7 and 1.5 Mya.
KW - Cytochrome b
KW - NADH1
KW - Neotropics
KW - Phylogeny
UR - http://www.scopus.com/inward/record.url?scp=77958576632&partnerID=8YFLogxK
U2 - 10.1111/j.1096-3642.2009.00621.x
DO - 10.1111/j.1096-3642.2009.00621.x
M3 - Article
AN - SCOPUS:77958576632
SN - 0024-4082
VL - 160
SP - 551
EP - 566
JO - Zoological Journal of the Linnean Society
JF - Zoological Journal of the Linnean Society
IS - 3
ER -