Systematics and evolution of the dasyurid marsupial genus Sminthopsis: I. The macroura species group

被引：29

作者：

Blacket M.J. ^{[1
]}

Adams M. ^{[2
]}

Cooper S.J.B. ^{[2
]}

Krajewski C. ^{[1
,3
]}

Westerman M. ^{[1
]}

机构：

[1] Department of Genetics, La Trobe University, Bundoora

[2] Evolutionary Biology Unit, South Australian Museum, Adelaide, SA 5000, North Terrace

[3] Department of Zoology, Centre for Systematic Biology, Southern Illinois University, Carbondale

来源：

Journal of Mammalian Evolution | 2001年 / 8卷 / 2期

基金：

美国国家科学基金会;

关键词：

Dasyurid marsupials; Genetic variation; Phylogeny; Sminthopsis;

D O I：

10.1023/A:1011322031747

中图分类号：

学科分类号：

摘要：

Genetic variation within the macroura species group, which includes Sminthopsis macroura, S. virginiae, S. douglasi, and S. bindi, was examined through analyses of complete mitochondrial 12S rRNA gene sequences, partial control-region DNA sequences, and allozymes. Divergent genetic lineages appear to be present within S. macroura and S. virginiae, and it is likely that this genetic divergence equates to currently unrecognized taxonomic diversity. Specimens of S. macroura (as currently recognized) belong to three genetically distinct lineages that are highly divergent from one another. Two of these lineages may be synonymous with two previously recognized dunnart species - S. froggatti and S. stalkeri. The third appears to represent "true" S. macroura and is itself genetically heterogeneous, with a number of subgroups present within it that may also represent currently unrecognized taxa. The mitochondrial DNA sequence divergences observed between S. virginiae nitela and the two other S. virginiae subspecies are equivalent to, or greater than, those noted between other dunnart species. Allozyme divergences between these subspecies were however slightly lower, and determination on whether S. virginiae nitela should be returned to full species status (S. nitela) may require further evidence. Phylogenetic relationships between species in the macroura group appear to have been partially resolved, with individual 12S rRNA and combined mitochondrial DNA analyses recovering S. bindi as the earliest diverging taxon. Other relationships between species in the group were either not consistently recovered or lacked strong support. © 2001 Plenum Publishing Corporation.

引用

页码：149 / 170

页数：21

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