Phylogeny and systematics of deep-sea sea pens (Anthozoa: Octocorallia: Pennatulacea)

Dolan, Emily; Tyler, Paul A.; Yesson, Chris; Rogers, Alex D.

doi:10.1016/j.ympev.2013.07.018

Cited by 24 publications

(57 citation statements)

References 38 publications

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“…More recently, molecular analyses have revealed possible homoplasies (e.g. the arrangement of autozooids in polyp leaves) and the consideration of non-monophyletic groupings within Pennatulacea (Dolan et al 2013, Kushida and Reimer 2018, García-Cárdenas et al 2019. Hickson (1916), in agreement with Kükenthal (1912) and Niedermeyer (1913), considered the veretillids (Veretillidae) to be the most primitive pennatulaceans, the order probably being derived from an alcyoniid ancestor with radial colony symmetry (related to the soft coral genus Anthomastus).…”

Section: Introductionmentioning

confidence: 87%

“…Hickson (1916:131) had already highlighted the difficulty of carrying out systematic studies on Pennatulacea based on features such as colonial symmetry because of the wide range of variation of those characters overlapping among genera and species. As has happened before with other octocoral groups, there is an evident lack of agreement between the current systematics of pennatulaceans based on morphological characters (see Kükenthal 1915, Hickson 1930, Williams 1997 and phylogenetic hypotheses generated from molecular data (McFadden et al 2006, Dolan et al 2013, Kushida and Reimer 2018. The presence of homoplastic characters (e.g.…”

Section: Time-tree Analysismentioning

confidence: 98%

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Molecular phylogeny and divergence time estimates in pennatulaceans (Cnidaria: Octocorallia: Pennatulacea)

García-Cárdenas

Núñez–Flores

López–González

2020

scimar

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Pennatulaceans are an important component of benthic marine communities usually related to soft bottoms. Despite their important ecological role, as yet little is known about their origin and divergence time. The first attempts to establish phylogenetic relationships among genera date from the early 20th century, when only morphological characters were available. In the last decade, phylogenetic analyses based on mitochondrial DNA sequences from a selected number of species have proposed a different hypothetical ancestor for this group, but their intergeneric relationships remain obscure. The present study is based on a combination of mitochondrial and nuclear markers (mtMutS, Cox1 and 28S rDNA), adding new molecular information about the phylogenetic relationships among the pennatulacean genera, including 38 new sequences belonging to 13 different species. Some of the phylogenetic relationships inferred in the present study question the current classification of sea pens based on morphology (at different taxonomic levels), clearly indicating that the two main groups Sessiliflorae and Subselliflorae, some of their main families (e.g. Pennatulidae, Umbellulidae, Virgulariidae) and some genera (e.g. Umbellula, Veretillum) are non-monophyletic. In addition, the veretillids, traditionally considered the most primitive pennatulaceans, are not shown as the earliest-diverging taxon. Moreover, an analysis of divergence time performed here suggested that the origin of the pennatulaceans dates from the Lower Cretaceous (Berriasian, ~144 Ma), in agreement with their sparsely known fossil record, while the initial divergence of most extant genera occurred in the Oligocene and Miocene times.

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Section: Introductionmentioning

confidence: 87%

Section: Time-tree Analysismentioning

confidence: 98%

Molecular phylogeny and divergence time estimates in pennatulaceans (Cnidaria: Octocorallia: Pennatulacea)

García-Cárdenas

Núñez–Flores

López–González

2020

scimar

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“…Purified products were electrophoresed on an ABI PRISM® 3730xl genetic analyser, and sequence traces were edited using Sequencher™ v4.0. According to the molecular phylogeny of Dolan et al (2013) and Kushida and Reimer (2018), Pennatula species were included in Clade II. As no clear basal relationships have been demonstrated among the three pennatulacean clades, for the present study sequences of two ellisellids from GenBank were selected as outgroups.…”

Section: Dna Extraction Pcr Amplification and Sequencingmentioning

confidence: 99%

“…The traditional family Pennatulidae comprises six genera: Gyrophyllum, Pennatula, Ptilosarcus, Sarcoptilus, Crassophyllum andPteroeides (Williams 1995a, 1995b). Dolan et al (2013) showed a consensus phylogenetic tree suggesting a non-monophyletic Pennatulidae. Although the monophyly of Pennatulidae was not .…”

Section: On the Polyphyletic Family Pennatulidae And The Familial Relmentioning

confidence: 99%

“…Recent molecular studies in octocorals have identified the order Pennatulacea as a monophyletic group (McFadden et al 2006, Dolan et al 2013, Kushida and Reimer 2018. However, the monophyly of the various supra-familial and familial pennatulacean groupings that have been proposed historically has recently been questioned by these same molecular studies (McFadden et al 2006, Dolan et al 2013, Kushida and Reimer 2018.…”

Section: Introductionmentioning

confidence: 99%

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Resurrection of the sea pen genus <em>Ptilella</em> Gray, 1870 and description of <em>Ptilella grayi</em> n. sp. from the NE Atlantic (Octocorallia: Pennatulacea)

2019

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The order Pennatulacea covers a group of specialized and morphologically distinct octocorals found in all oceans from intertidal areas to more than 6000 m in depth. Sea pens constitute an important structural component in marine softbottom communities by increasing the complexity of these environments. Despite being both morphologically distinctive and ecologically important, the taxonomy and systematics of sea pens is still poorly understood. Recent molecular studies have shown the existence of convergent morphological features, making the current familial distribution of genera unstable. The genus Pennatula Linnaeus, 1758 was one of the first described octocoral genera. It is the type genus of its family, Pennatulidae. Colonies of this genus have a characteristic morphology. Recent sampling efforts in the northeastern Atlantic have provided a number of colonies initially attributable to the genus Pennatula. Both morphological and molecular (mtMutS, Cox1 and 28S genes) study of this material supports the polyphyletic nature of this genus and the need to resurrect the genus Ptilella Gray, 1870 to accommodate these and other species. A new species, Ptilella grayi n. sp., is described and illustrated. The species Pennatula bayeri is proposed to be a junior synonym of Pennatula bellissima (here also considered in the genus Ptilella).

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Diversity and Distribution of Octocorallia

Pérez

Neves

Cordeiro

et al. 2016

The Cnidaria, Past, Present and Future

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Phylogeny and systematics of deep-sea sea pens (Anthozoa: Octocorallia: Pennatulacea)

Cited by 24 publications

References 38 publications

Molecular phylogeny and divergence time estimates in pennatulaceans (Cnidaria: Octocorallia: Pennatulacea)

Molecular phylogeny and divergence time estimates in pennatulaceans (Cnidaria: Octocorallia: Pennatulacea)

Resurrection of the sea pen genus <em>Ptilella</em> Gray, 1870 and description of <em>Ptilella grayi</em> n. sp. from the NE Atlantic (Octocorallia: Pennatulacea)

Diversity and Distribution of Octocorallia

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