Phylogenetic position and evolutionary history of the turtle and whale barnacles (Cirripedia: Balanomorpha: Coronuloidea)

2017). Gene rearrangement and sequence analysis of mitogenomes suggest polyphyly of Archaeobalanid and Balanid barnacles (Cirripedia: Balanomorpha). -Zoologica Scripta, 46, 729-739.The acorn barnacles (Cirripedia, Thoracica, Balanomorpha) are a diverse group of crustaceans found in virtually all marine and estuarine habitats. Barnacles are important model species in various biological researches, including evolution, intertidal ecology, larval biology and antifouling. However, there remains a lack of a thorough understanding of the phylogeny for this group of animals, particularly at higher taxonomic levels. In this study, we attempt to determine the phylogenetic relationships among balanomorphan families based on analysis of complete mitochondrial genome from various barnacle families and investigate the evolution of mitogenome in barnacles. Whole mitogenomes of six barnacles were newly sequenced, including Acasta sulcata (Archaeobalanidae), Armatobalanus allium (Archaeobalanidae), Chelonibia testudinaria (Chelonibiidae), Octomeris sp. (Chthamalidae), Savignium biporata (Pyrgomatidae) and Tetraclitella divisa (Tetraclitidae), which exhibit five different gene arrangements. Phylogenetic analysis on 15 complete mitochondrial genome sequences from major barnacle families supported Chthamalidae, Pyrgomatidae and Tetraclitidae formed monophyletic units, but suggested polyphyly of both Archaeobalanidae and Balanidae. Chthamalidae was the earliest diverged lineage in Balanomorpha. Chelonibiidae + Tetraclitidae formed the sister taxon to the monophyletic superfamily Balanoidea (Archaeobalanidae + Balanidae + Pyrgomatidae). The members of Archaeobalanidae and Balanidae intermingled in the inferred topology with the monophyletic Pyrgomatidae deeply nested within. Two Megabalanus species from the family Balanidae and A. sulcata from the family Archaeobalanidae share the same six-gene-cluster inversion as compared to the other ten balanomorphan barnacles, providing further evidence for the non-monophyly for the two families. We showed here that the informativeness of the complete mitogenome sequence and rare genomic events in resolving various questions concerning Balanomorpha relationships. The non-monophyletic status of Archaeobalanidae and Balanidae falsified many previous hypotheses concerning the complex evolution of Balanomorpha and call for further investigations and careful revision on the taxonomy of the group. Future study focusing on the enigmatic and tentatively basal lineages, for example, Chionelasmatoidea Pachylasmatoidea and Catophragmidae, would be most helpful in fully resolving the phylogeny and mitogenome evolutionary history of acorn barnacles.

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“…Chelonibiidae is most closely related to Tetraclitidae, in congruent with a recent molecular analysis (Hayashi et al . ; Chan et al . in press).…”

Section: Resultsmentioning

confidence: 99%

Gene rearrangement and sequence analysis of mitogenomes suggest polyphyly of Archaeobalanid and Balanid barnacles (Cirripedia: Balanomorpha)

et al. 2017

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“…Parasitism can be further confirmed when the parasites themselves are preserved. Surface scars caused by the attachment of sessile barnacles to the plastron and skull of turtles are known from the fossil record (Hayashi et al, 2013), but modern turtle barnacles are not treated as parasites. Such an association is a phoresis in which the barnacle is transported by the host, but it is not nutritionally dependent on the host as it still uses its modified thoracic limbs for suspension feeding.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, fossils of whale barnacles such as Coronula are known (e.g. Hayashi et al, 2013), but again, these are non-parasitic epibionts and are not the focus of this chapter.…”

Section: Introductionmentioning

confidence: 99%

Fossil Crustaceans as Parasites and Hosts

Klompmaker

Boxshall

2015

Fossil Parasites

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“…1A–I). Comparing these findings, Cylindrolepas sinica is likely ancestral to the whale barnacles (Hayashiet al 2013). …”

Section: Systematicsmentioning

confidence: 91%

“…Therefore, Cylindrolepas sinica is a valid species. In the phylogenetic analysis of Hayashi et al (2013), Cylindrolepas sinica clustered with the whale barnacles ( Xenobalanus , Coronula , and Cryptolepas ). The pseudo-stalked barnacle Xenobalanus globicipitis also has hexagonal and cylindrical shell walls (Fig.…”

Section: Systematicsmentioning

confidence: 99%

Intraspecific variation in the turtle barnacle, Cylindrolepas sinica Ren, 1980 (Cirripedia, Thoracica, Coronuloidea), with brief notes on habitat selectivity

Phylogenetic position and evolutionary history of the turtle and whale barnacles (Cirripedia: Balanomorpha: Coronuloidea)

Cited by 37 publications

References 14 publications

Gene rearrangement and sequence analysis of mitogenomes suggest polyphyly of Archaeobalanid and Balanid barnacles (Cirripedia: Balanomorpha)

Gene rearrangement and sequence analysis of mitogenomes suggest polyphyly of Archaeobalanid and Balanid barnacles (Cirripedia: Balanomorpha)

Fossil Crustaceans as Parasites and Hosts

Intraspecific variation in the turtle barnacle, Cylindrolepas sinica Ren, 1980 (Cirripedia, Thoracica, Coronuloidea), with brief notes on habitat selectivity

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