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Stiller, Josefin; Tilic, Ekin; Rousset, Vincent; Pleijel, Fredrick; Rouse, Greg W. (2020). Spaghetti to a tree: A robust phylogeny for Terebelliformia (Annelida) based on transcriptomes, molecular and morphological Data. Biology. 9(4): 73 [29 pp. + supplementary material].
378482
10.3390/biology9040073 [view]
Stiller, Josefin; Tilic, Ekin; Rousset, Vincent; Pleijel, Fredrick; Rouse, Greg W.
2020
Spaghetti to a tree: A robust phylogeny for Terebelliformia (Annelida) based on transcriptomes, molecular and morphological Data
Biology
9(4): 73 [29 pp. + supplementary material]
Publication
World Polychaeta Database (WPolyDb). Open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Available for editors  PDF available
Terebelliformia—“spaghetti worms” and their allies—are speciose and ubiquitous marine annelids but our understanding of how their morphological and ecological diversity evolved is hampered by an uncertain delineation of lineages and their phylogenetic relationships. Here, we analyzed transcriptomes of 20 terebelliforms and an outgroup to build a robust phylogeny of the main lineages grounded on 12,674 orthologous genes. We then supplemented this backbone phylogeny with a denser sampling of 121 species using five genes and 90 morphological characters to elucidate fine-scale relationships. The monophyly of six major taxa was supported: Pectinariidae, Ampharetinae, Alvinellidae, Trichobranchidae, Terebellidae and Melinninae. The latter, traditionally a subfamily of Ampharetidae, was unexpectedly the sister to Terebellidae, and hence becomes Melinnidae, and Ampharetinae becomes Ampharetidae. We found no support for the recently proposed separation of Telothelepodidae, Polycirridae and Thelepodidae from Terebellidae. Telothelepodidae was nested within Thelepodinae and is accordingly made its junior synonym. Terebellidae contained the subfamily-ranked taxa Terebellinae and Thelepodinae. The placement of the simplified Polycirridae within Terebellinae differed from previous hypotheses, warranting the division of Terebellinae into Lanicini, Procleini, Terebellini and Polycirrini. Ampharetidae (excluding Melinnidae) were well-supported as the sister group to Alvinellidae and we recognize three clades: Ampharetinae, Amaginae and Amphicteinae. Our analysis found several paraphyletic genera and undescribed species. Morphological transformations on the phylogeny supported the hypothesis of an ancestor that possessed both branchiae and chaetae, which is at odds with proposals of a “naked” ancestor. Our study demonstrates how a robust backbone phylogeny can be combined with dense taxon coverage and morphological traits to give insights into the evolutionary history and transformation of traits.
Molecular systematics, Molecular biology
Morphology
Phylogeny, Phylogenesis
Systematics, Taxonomy
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BibTex (BibDesk, LaTeX)
Date
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2020-04-08 08:51:21Z
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Melinnidae Chamberlin, 1919 (status source)
Polycirrini Malmgren, 1866 (taxonomy source)
Terebellidae Johnston, 1846 (taxonomy source)
Terebelliformia (taxonomy source)
 Classification

Holthe (1986) erected Ampharetini for Ampharete, Parampharete, Pterampharete, Sabellides, Asabellides, ... [details]

 Classification

Included in tribe Terebellini by Stiller et al (2020). Previously Holthe (1986) had placed it in a monotypic ... [details]

 Classification

Lanassa was included in tribe Terebellini by Stiller et al (2020). Previously Holthe (1986) had placed it in tribe ... [details]

 Classification

Leaena was included in tribe Terebellini by Stiller et al (2020). Previously Holthe (1986) had placed it in tribe ... [details]

 Classification

Formerly a subfamily in Ampharetidae. Chamberlin (1919: 443) in a key, without indicating it was a new subfamily, ... [details]

 Classification

See Melinnidae, upgraded in rank (Stiller et al 2020) from former subfamily rank as Melinninae in Ampharetidae [details]

 Classification

Neoamphitrite was included in tribe Terebellini by Stiller et al (2020). Previously Holthe (1986) had placed it in ... [details]

 Classification

See Polycirrini, downgraded in rank (Stiller et al 2020) from former subfamily rank as Polycirrinae in Terebellidae [details]

 Classification

Nogueira, Fitzhugh and Hutchings (2013: 235-236) considered subfamily Polycirrinae as family Polycirridae after ... [details]

 Classification

Spinosphaeraa was included in tribe Terebellini by Stiller et al (2020). Previously Holthe (1986) had not been able ... [details]

 Classification

Type genus of all Terebella-based family group names. Stiller et al (2020) revived 'Terebellini', first used by ... [details]

 Classification

Classification of Terebellidae is now based on Stiller et al (2020). These authors did not find support from ... [details]

 Classification

Only subfamilies Terebellinae, and Thelepodinae are in use following the molecular analysis of Stiller et al. ... [details]

 Classification

Stiller et al (2020) included Terebella, Artacama, Leaena, Neoamphitrite, Lanassa and Spinosphaera in a revived ... [details]

 Spelling

Holthe (1986) is one of the last prominent Terebellida specialists to use the spelling 'Terebellomorpha' for the ... [details]

 Taxonomy

Nogueira, Fitzhugh & Hutchings (2013: 236) in their formal systematics presentation did not indicate which genera ... [details]

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