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Basal position of two new complete mitochondrial genomes of parasitic Cymothoida (Crustacea: Isopoda) challenges the monophyly of the suborder and phylogeny of the entire order
Hua, Cong J.1,2,3; Li, Wen X.1,2; Zhang, Dong1,2,3; Zou, Hong1,2; Li, Ming1,2; Jakovlic, Ivan4; Wu, Shan G.1,2; Wang, Gui T.1,2,3
Corresponding AuthorWang, Gui T.(gtwang@ihb.ac.cn)
2018-12-10
Source PublicationPARASITES & VECTORS
ISSN1756-3305
Volume11Pages:15
AbstractBackground: Isopoda is a highly diverse order of crustaceans with more than 10,300 species, many of which are parasitic.Taxonomy and phylogeny within the order, especially those of the suborder Cymothoida Wagele, 1989, are still debated.Mitochondrial (mt) genomes are a useful tool for phylogenetic studies, but their availability for isopods is very limited.To explore these phylogenetic controversies on the mt genomic level and study the mt genome evolution in Isopoda, we sequenced mt genomes of two parasitic isopods, Tachaea chinensis Thielemann, 1910 and Ichthyoxenos japonensis Richardson, 1913, belonging to the suborder Cymothoida, and conducted comparative and phylogenetic mt genomic analyses across Isopoda. Results: The complete mt genomes of T.chinensis and I.japonensis were 14,616 bp and 15,440 bp in size, respectively, with the A+T content higher than in other isopods (72.7 and 72.8%, respectively).Both genomes code for 13 protein-coding genes, 21 transfer RNA genes (tRNAs), 2 ribosomal RNA genes (rRNAs), and possess a control region (CR).Both are missing a gene from the complete tRNA set: T.chinensis lacks trnS1 and I.japonensis lacks trnI.Both possess unique gene orders among isopods.Within the CR of I.japonensis (284 bp), we identified a repetitive region with four tandem repeats.Phylogenetic analysis based on concatenated nucleotide sequences of 13 proteincoding genes showed that the two parasitic cymothoids clustered together and formed a basal clade within Isopoda.However, another parasitic cymothoid, Gyge ovalis Shiino, 1939, formed a sister group with the suborder Limnoriidea Brandt & Poore in Poore, 2002, whereas two free-living cymothoid species were located in the derived part of the phylogram: Bathynomus sp.formed a sister group with the suborder Sphaeromatidea Wagele, 1989, and Eurydice pulchra Leach, 1815 with a clade including Bathynomus sp., Sphaeromatidea and Valvifera G.O.Sars, 1883. Conclusions: Our results did not recover the suborders Cymothoida and Oniscidea Latreille, 1802 as monophyletic, with parasitic and free-living cymothoidans forming separate clades.Furthermore, two parasitic cymothoidans formed the sister-clade to all other isopods, separated from Epicaridea Latreille, 1825, which challenges currently prevalent isopod phylogeny.Additional mt genomes of parasitic and free-living isopods might confer a sufficient phylogenetic resolution to enable us to resolve their relationships, and ultimately allow us to better understand the evolutionary history of the entire isopod order.
KeywordIchthyoxenos japonensis Tachaea chinensis Mitochondrial genome RNA secondary structure Gene rearrangement Phylogenetic analysis
DOI10.1186/s13071-018-3162-4
Funding OrganizationEarmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province
Indexed BySCI ; SCI
Language英语
Funding ProjectEarmarked Fund for China Agriculture Research System[CARS-45-15] ; National Natural Science Foundation of China[31872604] ; National Natural Science Foundation of China[31572658] ; Major Scientific and Technological Innovation Project of Hubei Province[2015ABA045]
WOS Research AreaParasitology ; Tropical Medicine
WOS SubjectParasitology ; Tropical Medicine
WOS IDWOS:000452637700001
WOS KeywordTRANSFER-RNA GENES ; MOLECULAR PHYLOGENY ; INFORMATION-CONTENT ; FISH PARASITES ; DEEP-SEA ; EVOLUTION ; SEQUENCE ; PERACARIDA ; PROGRAM ; WATER
PublisherBMC
Funding OrganizationEarmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; Earmarked Fund for China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province ; Major Scientific and Technological Innovation Project of Hubei Province
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/28939
Collection鱼类生物学及渔业生物技术研究中心_期刊论文
Corresponding AuthorWang, Gui T.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Minist Agr, Key Lab Aquaculture Dis Control, Wuhan 430072, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Biolake, Biotransduct Lab, Wuhan 430075, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Hua, Cong J.,Li, Wen X.,Zhang, Dong,et al. Basal position of two new complete mitochondrial genomes of parasitic Cymothoida (Crustacea: Isopoda) challenges the monophyly of the suborder and phylogeny of the entire order[J]. PARASITES & VECTORS,2018,11:15.
APA Hua, Cong J..,Li, Wen X..,Zhang, Dong.,Zou, Hong.,Li, Ming.,...&Wang, Gui T..(2018).Basal position of two new complete mitochondrial genomes of parasitic Cymothoida (Crustacea: Isopoda) challenges the monophyly of the suborder and phylogeny of the entire order.PARASITES & VECTORS,11,15.
MLA Hua, Cong J.,et al."Basal position of two new complete mitochondrial genomes of parasitic Cymothoida (Crustacea: Isopoda) challenges the monophyly of the suborder and phylogeny of the entire order".PARASITES & VECTORS 11(2018):15.
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