The Australian freshwater amphipods Austrochiltonia australis and Austrochiltonia subtenuis (Amphipoda : Talitroidea : Chiltoniidae) confirmed and two new cryptic Tasmanian species revealed using a combined molecular and morphological approach

被引:10
作者
King, Rachael A. [1 ,2 ,3 ]
Leys, Remko [1 ,3 ]
机构
[1] S Australian Museum, Evolutionary Biol Unit, Adelaide, SA 5000, Australia
[2] Univ Adelaide, Sch Earth & Environm Sci, Australian Ctr Evolutionary Biol & Biodivers, Adelaide, SA 5005, Australia
[3] Flinders Univ S Australia, Sch Biol Sci, Bedford Pk, SA 5001, Australia
基金
澳大利亚研究理事会;
关键词
COI; mitochondrial DNA; speciation; taxonomy; MITOCHONDRIAL-DNA PHYLOGEOGRAPHY; CRUSTACEA-AMPHIPODA; SUBTERRANEAN ARCHIPELAGO; DIVERSITY; BIODIVERSITY; DIFFERENTIATION; INVERTEBRATES; SPECIATION; EVOLUTION; PATTERNS;
D O I
10.1071/IS10035
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Given the complex nature of freshwater catchment divides and emerging evidence of high levels of genetic diversity, there is great potential for cryptic species to exist among Australian freshwater amphipod groups. Among the chiltoniid amphipods, two congeneric species, Austrochiltonia australis (Sayce, 1901) and A. subtenuis (Sayce, 1902), have been widely recorded across southern Australia yet are poorly known and contentiously defined. A large fragment of the mitochondrial DNA cytochrome c oxidase I (COI) gene was examined and morphological diversity among populations assessed across the reported geographic range of the two putative species. The results confirmed A. australis and A. subtenuis as morphological and molecular species. In addition, two previously undetected and cryptic species from Tasmania are recognised - sister species to A. subtenuis and A. australis. Working conclusions provide evidence towards a more comprehensive systematic revision of the Chiltoniidae and present species information relevant to conservation and management efforts of Australian river systems. A key is presented to the chiltoniid amphipods of southern Australia.
引用
收藏
页码:171 / 196
页数:26
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