Mitogenomic phylogeny and fossil-calibrated mutation rates for all F- And M-type mtDNA genes of the largest freshwater mussel family, the Unionidae (Bivalvia)

• Autor(a) principal: Zieritz, Alexandra
• Data de Publicação: 2018
• Outros Autores: Froufe, Elsa, Bolotov, Ivan N., Gonçalves, Duarte V., Aldridge, David C., Bogan, Arthur E., Gan, Han Ming, Gomes-dos-Santos, André, Sousa, Ronaldo, Teixeira, Amílcar, Varandas, Simone, Zanatta, David, Lopes-Lima, Manuel
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10198/21006
• topic: Evolutionary biogeography; Mitochondrial DNA; Palaeogeography; Selection; Substitution rate; Tropical biodiversity

The Unionidae represent an excellent model taxon for unravelling the drivers of freshwater diversity, but, phylogeographic studies on Southeast Asian taxa are hampered by lack of a comprehensive phylogeny and mutation rates for this fauna. We present complete female- (F) and male-type (M) mitogenomes of four genera of the Southeast Asian clade Contradentini+Rectidentini. We calculate substitution rates for the mitogenome, the 13 protein-coding genes, the two ribosomal units and three commonly used fragments (co1, nd1 and 16S) of both F- and M-mtDNA, based on a fossil-calibrated, mitogenomic phylogeny of the Unionidae. Phylogenetic analyses, including an M+F concatenated dataset, consistently recovers a monophyletic Gonideinae. Subfamily-level topology is congruent with that of a previous nuclear genomic study and with patterns in mitochondrial gene order, suggesting Unionidae F-type 2 as a synapomorphy of the Gonideinae. Our phylogeny indicates that the clades Contradentini+Rectidentini and Lamprotulini+Pseudodontini+Gonideini split in the early Cretaceous (~125 Mya), and that the crown group of Contradentini+Rectidentini originated in the late Cretaceous (~79 Mya). Most gonideine tribes originated during the early Palaeogene. Substitution rates were comparable to those previously published for F-type co1 and 16S for certain Unionidae and Margaritiferidae species (pairs).