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<b>Erratum: JOHN D. TAYLOR, EMILY A. GLOVER & SUZANNE T. WILLIAMS (2026) Classification and relationships of living species of Laternulidae (Bivalvia, Anomalodesmata): new light on lantern shells. <i>Zootaxa</i>, 5771 (1): 1-92.</b>

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A phylogenetic backbone for Bivalvia: an RNA-seq approach.

Vanessa L González1, Sónia C S Andrade1, Rüdiger Bieler2

  • 1Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.

Proceedings. Biological Sciences
|January 16, 2015
PubMed
Summary

This study presents the first phylogenomic analysis of bivalves, establishing a robust evolutionary tree. This research clarifies the relationships between major bivalve groups, aiding future evolutionary studies.

Keywords:
bivalvesmolluscaphylogeneticsphylogenomics

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Area of Science:

  • * Zoology and evolutionary biology.
  • * Marine biology and invertebrate paleontology.

Background:

  • * Bivalves are a diverse invertebrate group with significant ecological and economic importance.
  • * Despite extensive study, their deep phylogenetic relationships remain poorly understood, hindering their use as a model for macroevolutionary research.
  • * A robust phylogeny is crucial for understanding bivalve evolution and their role in aquatic ecosystems.

Purpose of the Study:

  • * To construct the first robust phylogenomic backbone for Bivalvia.
  • * To resolve long-standing questions regarding the monophyly and interrelationships of major bivalve lineages.
  • * To demonstrate the utility of phylogenomic approaches for resolving evolutionary histories in bivalves.

Main Methods:

  • * Employed a phylogenomic approach using novel transcriptomic data from 31 bivalve species.
  • * Integrated new RNA-seq data with publicly available genomic and transcriptomic data from other bivalves and outgroups.
  • * Analyzed hundreds of genes to reconstruct the evolutionary history of Bivalvia.

Main Results:

  • * Generated a well-resolved and robust phylogenetic tree for Bivalvia, delineating all major lineages.
  • * Resolved the monophyly of Protobranchia and Heterodonta, clarifying their evolutionary placement.
  • * Established the phylogenetic positions of key groups including Palaeoheterodonta, Archiheterodonta, and Anomalodesmata.

Conclusions:

  • * The study provides a fully resolved phylogenetic backbone for Bivalvia, settling critical evolutionary questions.
  • * Phylogenomic methods using extensive gene data are effective for resolving deep evolutionary relationships in bivalves.
  • * This resolved phylogeny enhances the potential of bivalves as a model system for macroevolutionary studies.