New lineages and old species: lineage diversity and regional distribution of Moina (Crustacea: Cladocera) in China

Ni, Yijun, Ma, Xiaolin, Hu, Wei, Blair, David, and Yin, Mingbo (2019) New lineages and old species: lineage diversity and regional distribution of Moina (Crustacea: Cladocera) in China. Molecular Phylogenetics and Evolution, 134. pp. 87-98.

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Abstract

The distribution and genetic diversity of freshwater zooplankton is understudied in the Eastern Palearctic. Here, we explored the lineage diversity and regional distribution of the genus Moina in China. Members of this genus are often keystone components of freshwater ecosystems and have been frequently subjected to toxicological and physiological studies. Four species of Moina were identified, based on morphology, in 50 of 113 Chinese water bodies examined, and their phylogenetic position was analyzed using both a mitochondrial (mitochondrial cytochrome c oxidase subunit I; COI) and a nuclear marker (the nuclear internal transcribed spacer; ITS-1). Both molecular markers identified four clades corresponding broadly to the morphological species. Mitochondrial DNA analysis showed the presence of four species complexes with eleven lineages across China, five of which were new. However, some lineages (and even individual haplotypes) were widespread in Eurasia, suggesting an ability to disperse over long distances. In contrast, a few lineages exhibited restricted distributions. The nuclear phylogeny also recognized four species of Moina within China and seven very distinct clades. Interestingly, one specimen possessing Moina cf. micrura mtDNA had ITS-1 alleles of the M. cf. brachiata clade. This discordance between mtDNA and nuclear ITS-1 phylogenies is indicative of interspecific introgression and hybridization. Additionally, our COI phylogeny showed apparent paraphyly in two Moina species groups, suggesting introgression of their mitochondrial genomes. Our data shows the regional distribution/diversity of the Moina species complex in a Eurasian context.

Item ID: 57841
Item Type: Article (Research - C1)
ISSN: 1095-9513
Keywords: Moina; genetic lineages; COI gene; ITS-1; gene introgression; Eurasia
Copyright Information: © 2019 Elsevier Inc. All rights reserved.
Funders: National Natural Science Foundation of China (NSFC), Natural Science Foundation of Shanghai, China
Projects and Grants: NSFC 31670380, Natural Science Foundation of Shanghai, China 16ZR1402900
Date Deposited: 03 Apr 2019 07:56
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060302 Biogeography and Phylogeography @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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