Author(s):
Zieritz, Alexandra ; Froufe, Elsa ; Bolotov, Ivan ; Gonçalves, Duarte V. ; Aldridge, David C. ; Bogan, Arthur E. ; Gan, Han Ming ; Gomes-Dos-Santos, André ; Sousa, Ronaldo Gomes ; Teixeira, Amilcar ; Varandas, Simone ; Zanatta, David ; Lopes-Lima, Manuel
Date: 2021
Persistent ID: https://hdl.handle.net/1822/83098
Origin: RepositóriUM - Universidade do Minho
Subject(s): evolutionary biogeography; mitochondrial DNA; palaeogeography; selection; substitution rate; tropical biodiversity; Ciências Naturais::Ciências Biológicas
Description
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).
