Minimal genetic divergence among South American samples of the water opossum Chironectes minimus: evidence for transcontinental gene flow?

被引：3

作者：

Voss, Robert S. ^{[1
]}

Jansa, Sharon A. ^{[2
,3
]}

机构：

[1] Amer Museum Nat Hist, Div Vertebrate Zool Mammal, West 79th St, New York, NY 10024 USA

[2] Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA

[3] Univ Minnesota, JF Bell Museum Nat Hist, St Paul, MN 55108 USA

来源：

MAMMALIA | 2019年 / 83卷 / 02期

基金：

美国国家科学基金会;

关键词：

Chironectes; cytochrome b; gene flow; subspecies; taxonomy; MITOCHONDRIAL-DNA; DIDELPHIMORPHIA; DIDELPHIDAE;

D O I：

10.1515/mammalia-2018-0073

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Cytochrome b sequences from South American specimens of the water opossum Chironectes minimus exhibit uncorrected pairwise differences of 0.6% or less among samples collected thousands of kilometers apart (in Guyana, Bolivia and southeastern Brazil). Despite published evidence of population divergence from recent analyses of craniodental morphology, our results suggest extensive gene flow or recent range expansion across the South American landscapes currently occupied by this seldom-collected species.

引用

页码：190 / 192

页数：3