Abstract:
:Brachyura is one of the most species rich and highly derived groups among extant crustaceans, with over 7250 known species. However, brachyuran phylogeny remains controversial and requires further study. Here, we combined 103 brachyuran mitogenomes from GenBank with 10 new mitogenomes to describe gene rearrangement patterns and explore the internal phylogenetic relationships of Brachyura. Most of the 10 novel mitogenomes had the typical 37 genes, except that of Longpotamon depressum, which lacked trnQ. We discovered 15 gene rearrangement patterns among Brachyura and preliminarily determined their rearrangement mechanisms with the help of CREx. We identified seven putative ancestral family gene orders among the 15 rearrangement patterns and expounded systematically upon the mechanisms of their rearrangement. In our phylogenetic analysis, Raninoida shared a sister relationship with an eubrachyuran clade ((Heterotremata [Potamoidea] + Thoracotremata) + Heterotremata) at maximum nodal support rather than Dromiacea, which did not support monophyly of Podotremata. In addition, Potamoidea (Parathelphusidae + Potamidae) retained a close relationship with Thoracotremata rather than their marine relatives in Heterotremata. Our study provides important information for the evolution of Brachyura by using the large taxon sampling currently available for systematic rearrangement and phylogenetic analyses.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Wang Q,Wang J,Wu Q,Xu X,Wang P,Wang Zdoi
10.1016/j.ijbiomac.2020.12.210subject
Has Abstractpub_date
2021-02-15 00:00:00pages
717-727eissn
0141-8130issn
1879-0003pii
S0141-8130(20)35391-5journal_volume
170pub_type
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