AUTHOR=Li Fengping , Zheng Jiawen , Ma Qingxia , Gu Zhifeng , Wang Aimin , Yang Yi , Liu Chunsheng 

TITLE=Phylogeny of Strombidae (Gastropoda) Based on Mitochondrial Genomes

JOURNAL=Frontiers in Marine Science

VOLUME=Volume 9 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2022.930910

DOI=10.3389/fmars.2022.930910

ISSN=2296-7745

ABSTRACT=The marine gastropod Strombidae are widely distributed in tropical and subtropical regions all over the world and possess high morphological diversity. In order to better understand how morphological characteristics evolved with Strombidae, a robust phylogenetic framework is needed. In the present study, the complete mitochondrial genomes of Lentigo lentiginosus, Euprotomus aratrum and Canarium labiatum were sequenced. The three newly sequenced mt genomes contained 13 PCGs, 22 tRNA genes, two rRNA genes, and several noncoding regions, indicating a similar pattern with respect to genome size, gene order, and nucleotide composition compared with those of other strombids reported before. Two different datasets derived from mitochondrial genes were constructed to resolve the internal phylogenetic relationships of Stromboidea and Strombidae, respectively. Within Stromboidea, two monophyletic clades were fully recovered and supported by morphological synapomorphies. In addition, the inclusion of Xenophoridae within Stromboidea was supported. The phylogenetic positions of L. lentiginosus, E. aratrum and C. labiatum were confirmed within Strombidae, and several morphological similarities were observed corresponding to the present phylogeny. A correlation between strombids speciation events and paleoclimate change and/or continental drift was presumed. Our results indicate that complete mt genomes would be a promising tool to reconstruct a robust phylogeny of Strombidae with an increased taxon sampling in the future.