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Molecular phylogenetics and evolution v.118, 2018년, pp.88 - 98   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

More evolution underground: Accelerated mitochondrial substitution rate in Australian burrowing freshwater crayfishes (Decapoda: Parastacidae)

Gan, Han Ming    (Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Victoria 3220, Australia   ); Tan, Mun Hua    (Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Victoria 3220, Australia   ); Lee, Yin Peng    (Genomics Facility, Tropical and Medicine Biology Platform, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Petaling Jaya, Selangor, Malaysia   ); Schultz, Mark B.    (Microbiological Diagnostic Unit, Public Health Laboratory, Faculty of Medical and Dental Health Sciences, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity, 792 Elizabeth Street, Melbourne, Vic 3000, Australia   ); Horwitz, Pierre    (School of Science, Edith Cowan University, 100 Joondalup Drive, Joondalup, Perth, WA 6027, Australia   ); Burnham, Quinton    (School of Science, Edith Cowan University, 100 Joondalup Drive, Joondalup, Perth, WA 6027, Australia   ); Austin, Christopher M.    (Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Victoria 3220, Aust  );
  • 초록  

    Abstract To further understand the evolutionary history and mitogenomic features of Australia’s highly distinctive freshwater crayfish fauna, we utilized a recently described rapid mitogenome sequencing pipeline to generate 24 new crayfish mitogenomes including a diversity of burrowing crayfish species and the first for Astacopsis gouldi , the world’s largest freshwater invertebrate. Whole mitogenome-based phylogeny estimates using both Bayesian and Maximum Likelihood methods substantially strengthen existing hypotheses for systematic relationships among Australian freshwater crayfish with evidence of pervasive diversifying selection and accelerated mitochondrial substitution rate among the members of the clade representing strongly burrowing crayfish that may reflect selection pressures for increased energy requirement for adaptation to terrestrial environment and a burrowing lifestyle. Further, gene rearrangements are prevalent in the burrowing crayfish mitogenomes involving both tRNA and protein coding genes. In addition, duplicated control regions were observed in two closely related Engaeus species, together with evidence for concerted evolution. This study significantly adds to the understanding of Australian freshwater crayfish evolutionary relationships and suggests a link between mitogenome evolution and adaptation to terrestrial environments and a burrowing lifestyle in freshwater crayfish. Highlights Whole mitogenome sequencing of 24 freshwater crayfish from Australia and Indonesia. Australian burrowing crayfish exhibit accelerated mitochondrial substitution rate . Varying degrees of mitochondrial gene rearrangement in Australian burrowing crayfish. First report of duplicated mitochondrial control regions in freshwater crayfish. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Freshwater crayfish .   Comparative mitochondrial genomics .   Engaeus, Parastacidae .   Phylogenetics.  

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