Hidden among Sea Anemones: The First Comprehensive Phylogenetic Reconstruction of the Order Actiniaria (Cnidaria, Anthozoa, Hexacorallia) Reveals a Novel Group of Hexacorals

@article{Rodrguez2014HiddenAS,
  title={Hidden among Sea Anemones: The First Comprehensive Phylogenetic Reconstruction of the Order Actiniaria (Cnidaria, Anthozoa, Hexacorallia) Reveals a Novel Group of Hexacorals},
  author={Estefan{\'i}a Rodr{\'i}guez and Marcos Barbeitos and Mercer R. Brugler and Louise M. Crowley and Alejandro Grajales and Luciana C. Gusm{\~a}o and Verena H{\"a}ussermann and Abigail Reft and Marymegan Daly},
  journal={PLoS ONE},
  year={2014},
  volume={9}
}
Sea anemones (order Actiniaria) are among the most diverse and successful members of the anthozoan subclass Hexacorallia, occupying benthic marine habitats across all depths and latitudes. [] Key Result We do not recover Actiniaria as a monophyletic clade: the deep-sea anemone Boloceroides daphneae, previously included within the infraorder Boloceroidaria, is resolved outside of Actiniaria in several of the analyses. We erect a new genus and family for B. daphneae, and rank this taxon incerti ordinis.

Figures and Tables from this paper

Mitogenomics suggests a sister relationship of Relicanthus daphneae (Cnidaria: Anthozoa: Hexacorallia: incerti ordinis) with Actiniaria
TLDR
15 newly-sequenced sea anemone mitochondrial genomes and a mitogenome-based phylogeny including all major cnidarian groups, sponges, and placozoans are presented and a moderately supported sister relationship between Relicanthus and the Actiniaria is revealed.
Phylogenomics, Origin and Diversification of Anthozoans (Phylum Cnidaria).
TLDR
Ancestral state reconstructions indicate that the ancestral anthozoan was a solitary polyp that had bilateral symmetry and lacked a skeleton, and a fully resolved, time-calibrated phylogeny for 234 species constructed from hundreds of ultraconserved elements and exon loci is explored.
Molecular phylogeny of Ceriantharia (Cnidaria: Anthozoa) reveals non-monophyly of traditionally accepted families
TLDR
Molecular phylogenetic analyses based on six mitochondrial or nuclear loci place Ceriantharia as sister to Hexacorallia s.s., but with no significant support relative to an alternative hypothesis that it is the sister taxon to Octocorallie, and the validity of the suborder Spirularia is questioned.
Anthopleura and the phylogeny of Actinioidea (Cnidaria: Anthozoa: Actiniaria)
TLDR
It is found that Anthopleura is paraphyletic: although species of the genus cluster together, some groups also include members of genera like Bunodosoma, Aulactinia, Oulactis, and Actinia, and this paraphyly is explained in part by the discovery that acrorhagi and verrucae are pleisiomorphic for the subset of Actinioidea studied.
Morphological revision of the genus Aiptasia and the family Aiptasiidae (Cnidaria, Actiniaria, Metridioidea).
TLDR
The genus Aiptasia is revised and morphological evidence that supports splitting A. mutabilis into two species is found, and a new genus, Exaiptasia gen. nov, is erected for this species primarily based on cnidae, mode of asexual reproduction and symbionts.
Morphological and molecular variability of the sea anemone Phymanthus crucifer (Cnidaria, Anthozoa, Actiniaria, Actinoidea)
TLDR
With the exception of the protuberances, the morphological and molecular results show no differences among the three morphotypes; thus, it is considered to be intraspecific variability within P. crucifer and molecular data reveal that the family Phymanthidae is not monophyletic.
Species Delimitation in Sea Anemones (Anthozoa: Actiniaria): From Traditional Taxonomy to Integrative Approaches
TLDR
Current gaps in knowledge are discussed, some future directions on how to address the issue of species delimitation in the extremely polymorphic group of sea anemones are offered and genetic studies show that morphological convergences are also widespread among molecular phylogenies.
Linear Mitochondrial Genome in Anthozoa (Cnidaria): A Case Study in Ceriantharia
TLDR
The presence of tRNAMet and tRNATrp in both ceriantharian mitogenomes supports a closer relationship between Ceriantharia and Hexacorallia than between Ceria and any other cnidarian lineage, but phylogenetic analysis of the genes contained in the mitogenome suggests that Cerianstaria is sister to a clade containing Octocor allia indicating a possible suppression of tR NATrp.
Cophylogenetic analysis of the relationship between anemonefish Amphiprion (Perciformes: Pomacentridae) and their symbiotic host anemones (Anthozoa: Actiniaria)
TLDR
Understanding of the pattern and the role of evolutionary events are expanded to allow a better prediction of the future of the anemonefish-anemone relationship.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 142 REFERENCES
Phylogenetic relationships among sea anemones (Cnidaria: Anthozoa: Actiniaria).
Systematics of the Hexacorallia (Cnidaria: Anthozoa)
TLDR
It is found that orders Actiniaria, Antipatharia, Ceriantharia, Corallimorpharia, Scleractinia, and Zoanthidea are monophyletic; CorallIMorpharia is most closely related to Scleractsinia.
The evolutionary history of the order Antipatharia (Cnidaria: Anthozoa: Hexacorallia) as inferred from mitochondrial and nuclear DNA: implications for black coral taxonomy and systematics
TLDR
These and other results provide novel, independent insights into the evolutionary history of antipatharians and support placement of species into higher-level groupings based on microscopic skeletal features rather than gross colony morphology.
A SIMPLE TEST: EVALUATING EXPLANATIONS FOR THE RELATIVE SIMPLICITY OF THE EDWARDSIIDAE (CNIDARIA: ANTHOZOA)
TLDR
Phylogenetic analyses of small subunit ribosomal gene sequences reveal that the Edwardsiidae are derived zoantharians, nested within sea anemones.
Toward a natural classification: phylogeny of acontiate sea anemones (Cnidaria, Anthozoa, Actiniaria)
TLDR
The results of the phylogenetic analyses indicate that the diagnostic morphological characters used in the family‐level taxonomy of acontiate actiniarians such as the nematocysts of the acontia, the marginal sphincter muscle, and mesenteries divisible into macro‐ and micro‐cnemes, have to be revisited, as these features are highly homoplasious.
Cnidarian phylogenetic relationships as revealed by mitogenomics
TLDR
These analyses suggest that the shared morphological characters in these groups are plesiomorphies, originated in the branch leading to Medusozoa, and the hypothesis that Staurozoa is the sister group to all the other medusozoans is rejected.
Phylogenetic signal in mitochondrial and nuclear markers in sea anemones (Cnidaria, Actiniaria).
TLDR
The properties of mitochondrial and nuclear ribosomal genes in the cnidarian order Actiniaria are explored, using both an ordinal- and familial-scale sample of taxa and although the markers do not show significant incongruence, they differ in their phylogenetic informativeness and the kinds of relationships they resolve.
A systematic revision of Edwardsiidae (Cnidaria, Anthozoa)
TLDR
Difficulties in addressing relationships among sea anemones are explored in the context of a revision of the family Edwardsiidae and character support is identified for several previously proposed taxa or clades, including the genus Edwardsiella and a clade containing Nematostella and Drillactis.
Phylogenetic relationships within the class Anthozoa (phylum Cnidaria) based on nuclear 18S rDNA sequences.
TLDR
The 18S rRNA gene has sufficient phylogenetic signal, however, to distinguish among the major groupings within the Class Anthozoa, and this information is used to suggest relationships for the enigmatic taxa Dactylanthus and Dendrobrachia.
...
1
2
3
4
5
...