Assessment of mitochondrial genomes for heterobranch gastropod phylogenetics

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dc.contributor.authorVarney, Rebecca M.
dc.contributor.authorBrenzinger, Bastian
dc.contributor.authorMalaquias, Manuel Antonio E.
dc.contributor.authorMeyer, Christopher P.
dc.contributor.authorSchroedl, Michael
dc.contributor.authorKocot, Kevin M.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherUniversity of Bergen
dc.contributor.otherSmithsonian Institution
dc.contributor.otherSmithsonian National Museum of Natural History
dc.contributor.otherUniversity of Munich
dc.date.accessioned2023-10-02T15:15:28Z
dc.date.available2023-10-02T15:15:28Z
dc.date.issued2021
dc.description.abstractBackgroundHeterobranchia is a diverse clade of marine, freshwater, and terrestrial gastropod molluscs. It includes such disparate taxa as nudibranchs, sea hares, bubble snails, pulmonate land snails and slugs, and a number of (mostly small-bodied) poorly known snails and slugs collectively referred to as the "lower heterobranchs". Evolutionary relationships within Heterobranchia have been challenging to resolve and the group has been subject to frequent and significant taxonomic revision. Mitochondrial (mt) genomes can be a useful molecular marker for phylogenetics but, to date, sequences have been available for only a relatively small subset of Heterobranchia.ResultsTo assess the utility of mitochondrial genomes for resolving evolutionary relationships within this clade, eleven new mt genomes were sequenced including representatives of several groups of "lower heterobranchs". Maximum likelihood analyses of concatenated matrices of the thirteen protein coding genes found weak support for most higher-level relationships even after several taxa with extremely high rates of evolution were excluded. Bayesian inference with the CAT+GTR model resulted in a reconstruction that is much more consistent with the current understanding of heterobranch phylogeny. Notably, this analysis recovered Valvatoidea and Orbitestelloidea in a polytomy with a clade including all other heterobranchs, highlighting these taxa as important to understanding early heterobranch evolution. Also, dramatic gene rearrangements were detected within and between multiple clades. However, a single gene order is conserved across the majority of heterobranch clades.ConclusionsAnalysis of mitochondrial genomes in a Bayesian framework with the site heterogeneous CAT+GTR model resulted in a topology largely consistent with the current understanding of heterobranch phylogeny. However, mitochondrial genomes appear to be too variable to serve as good phylogenetic markers for robustly resolving a number of deeper splits within this clade.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationVarney, R. M., Brenzinger, B., Malaquias, M. A. E., Meyer, C. P., Schrödl, M., & Kocot, K. M. (2021). Assessment of mitochondrial genomes for heterobranch gastropod phylogenetics. In BMC Ecology and Evolution (Vol. 21, Issue 1). Springer Science and Business Media LLC. https://doi.org/10.1186/s12862-020-01728-y
dc.identifier.doi10.1186/s12862-020-01728-y
dc.identifier.orcidhttps://orcid.org/0000-0002-8673-2688
dc.identifier.orcidhttps://orcid.org/0000-0003-2501-7952
dc.identifier.urihttps://ir.ua.edu/handle/123456789/12513
dc.languageEnglish
dc.language.isoen_US
dc.publisherBMC
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectHeterobranchia
dc.subjectGastropoda
dc.subjectMitochondrial genome
dc.subjectMitogenomic
dc.subjectGENE ORDER
dc.subjectALGORITHM
dc.subjectSUPPORTS
dc.subjectSTEPS
dc.subjectSLUGS
dc.subjectTOOL
dc.subjectEcology
dc.subjectEvolutionary Biology
dc.subjectGenetics & Heredity
dc.titleAssessment of mitochondrial genomes for heterobranch gastropod phylogeneticsen_US
dc.typeArticle
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