Sequencing of complete mitochondrial genomes confirms synonymization of Hyalomma asiaticum asiaticum and kozlovi, and advances phylogenetic hypotheses for the Ixodidae
| Autor: | Wang Dengfeng, Liu Yanfeng, Nuer Kuermanali, Han Tao, Chuangfu Chen, Yuanzhi Wang, Shen Chenfeng, Wang Junwei, Wang Jie, Liu Zhiqiang, Zhao Li, Zhang Zhuangzhi, Chen Shijun, Guo Huiling |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Paraphyly lcsh:Medicine Animal Phylogenetics Disease Vectors Biochemistry 01 natural sciences Database and Informatics Methods Ticks Medicine and Health Sciences lcsh:Science Phylogeny Energy-Producing Organelles Data Management Genome Multidisciplinary Phylogenetic tree biology Eukaryota Phylogenetic Analysis Mitochondria Phylogenetics Nucleic acids Rhipicephalus Infectious Diseases Cellular Structures and Organelles Transfer RNA Dermacentor Sequence Analysis Ixodidae Research Article Computer and Information Sciences Arthropoda Bioinformatics Bioenergetics Research and Analysis Methods DNA Mitochondrial 010603 evolutionary biology 03 medical and health sciences Arachnida Animals Evolutionary Systematics Non-coding RNA Taxonomy Evolutionary Biology Ixodes lcsh:R Organisms Biology and Life Sciences Sequence Analysis DNA Cell Biology biology.organism_classification Invertebrates Species Interactions 030104 developmental biology Evolutionary biology RNA lcsh:Q Hyalomma Zoology Sequence Alignment |
| Zdroj: | PLoS ONE, Vol 13, Iss 5, p e0197524 (2018) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | Phylogeny of hard ticks (Ixodidae) remains unresolved. Mitochondrial genomes (mitogenomes) are increasingly used to resolve phylogenetic controversies, but remain unavailable for the entire large Hyalomma genus. Hyalomma asiaticum is a parasitic tick distributed throughout the Asia. As a result of great morphological variability, two subspecies have been recognised historically; until a morphological data-based synonymization was proposed. However, this hypothesis was never tested using molecular data. Therefore, objectives of this study were to: 1. sequence the first Hyalomma mitogenome; 2. scrutinise the proposed synonymization using molecular data, i.e. complete mitogenomes of both subspecies: H. a. asiaticum and kozlovi; 3. conduct phylogenomic and comparative analyses of all available Ixodidae mitogenomes. Results corroborate the proposed synonymization: the two mitogenomes are almost identical (99.6%). Genomic features of both mitogenomes are standard for Metastriata; which includes the presence of two control regions and all three "Tick-Box" motifs. Gene order and strand distribution are perfectly conserved for the entire Metastriata group. Suspecting compositional biases, we conducted phylogenetic analyses (29 almost complete mitogenomes) using homogeneous and heterogeneous (CAT) models of substitution. The results were congruent, apart from the deep-level topology of prostriate ticks (Ixodes): the homogeneous model produced a monophyletic Ixodes, but the CAT model produced a paraphyletic Ixodes (and thereby Prostriata), divided into Australasian and non-Australasian clades. This topology implies that all metastriate ticks have evolved from the ancestor of the non-Australian branch of prostriate ticks. Metastriata was divided into three clades: 1. Amblyomminae and Rhipicephalinae (Rhipicephalus, Hyalomma, Dermacentor); 2. Haemaphysalinae and Bothriocrotoninae, plus Amblyomma sphenodonti; 3. Amblyomma elaphense, basal to all Metastriata. We conclude that mitogenomes have the potential to resolve the long-standing debate about the evolutionary history of ticks, but heterogeneous evolutionary models should be used to alleviate the effects of compositional heterogeneity on deep-level relationships. |
| Databáze: | OpenAIRE |
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