Advanced

Marsupial relationships and a timeline for marsupial radiation in South Gondwana

Nilsson, Maria LU ; Arnason, Ulfur LU ; Spencer, PBS and Janke, Axel LU (2004) In Gene 340(2). p.189-196
Abstract
Recent marsupials include about 280 species divided into 18 families and seven orders. Approximately 200 species live in Australia/New Guinea. The remaining species inhabit South America with some of these secondarily ranging into North America. In this study, we examine marsupial relationships and estimate their divergences times using complete mitochondrial (mt) genomes. The sampling, which includes nine new mtDNAs and a total number of 19 marsupial genomes, encompasses all extant orders and 14 families. The analysis identified a basal split between Didelphimorphia and remaining orders about 69 million years before present (MYBP), while other ordinal divergences were placed in Tertiary times. The monotypic South American order... (More)
Recent marsupials include about 280 species divided into 18 families and seven orders. Approximately 200 species live in Australia/New Guinea. The remaining species inhabit South America with some of these secondarily ranging into North America. In this study, we examine marsupial relationships and estimate their divergences times using complete mitochondrial (mt) genomes. The sampling, which includes nine new mtDNAs and a total number of 19 marsupial genomes, encompasses all extant orders and 14 families. The analysis identified a basal split between Didelphimorphia and remaining orders about 69 million years before present (MYBP), while other ordinal divergences were placed in Tertiary times. The monotypic South American order Microbiotheria (Dromiciops gliroides, Monito del Monte) was solidly nested among its Australian counterparts. The results suggest that marsupials colonized Australia twice from Antarctica/South America and that the divergence between Microbiotheria and its Australian relatives coincided with the geological separation of Antarctica and Australia. Within Australia itself. several of the deepest divergences were estimated to have taken place close to the Eocene/Oligocene transition. (C) 2004 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
dromiciops, notoryctes, marsupial evolution, south Gondwana
in
Gene
volume
340
issue
2
pages
189 - 196
publisher
Elsevier
external identifiers
  • pmid:15475160
  • wos:000224607600003
  • scopus:4744344187
ISSN
1879-0038
DOI
10.1016/j.gene.2004.07.040
language
English
LU publication?
yes
id
00a953a1-f207-4379-b383-03da98d58807 (old id 262782)
date added to LUP
2007-10-29 09:34:20
date last changed
2017-10-08 04:14:48
@article{00a953a1-f207-4379-b383-03da98d58807,
  abstract     = {Recent marsupials include about 280 species divided into 18 families and seven orders. Approximately 200 species live in Australia/New Guinea. The remaining species inhabit South America with some of these secondarily ranging into North America. In this study, we examine marsupial relationships and estimate their divergences times using complete mitochondrial (mt) genomes. The sampling, which includes nine new mtDNAs and a total number of 19 marsupial genomes, encompasses all extant orders and 14 families. The analysis identified a basal split between Didelphimorphia and remaining orders about 69 million years before present (MYBP), while other ordinal divergences were placed in Tertiary times. The monotypic South American order Microbiotheria (Dromiciops gliroides, Monito del Monte) was solidly nested among its Australian counterparts. The results suggest that marsupials colonized Australia twice from Antarctica/South America and that the divergence between Microbiotheria and its Australian relatives coincided with the geological separation of Antarctica and Australia. Within Australia itself. several of the deepest divergences were estimated to have taken place close to the Eocene/Oligocene transition. (C) 2004 Elsevier B.V. All rights reserved.},
  author       = {Nilsson, Maria and Arnason, Ulfur and Spencer, PBS and Janke, Axel},
  issn         = {1879-0038},
  keyword      = {dromiciops,notoryctes,marsupial evolution,south Gondwana},
  language     = {eng},
  number       = {2},
  pages        = {189--196},
  publisher    = {Elsevier},
  series       = {Gene},
  title        = {Marsupial relationships and a timeline for marsupial radiation in South Gondwana},
  url          = {http://dx.doi.org/10.1016/j.gene.2004.07.040},
  volume       = {340},
  year         = {2004},
}