Systematic re-structure and new species of Sphaerodoridae (Annelida) after morphological revision and molecular phylogenetic analyses of the North East Atlantic fauna

Nygren, Arne; Parapar, Julio; Bakken, Torkild; Meißner, Karin; Moreira, Juan

doi:10.3897/zookeys.845.32428

Cited by 5 publications

(16 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The monophyly of the group has been assessed recently and is evidenced by their well-defined external morphology (e.g., Capa et al 2016 ). As a result of a major revision of the group, there are currently eight accepted genera ( Capa et al 2018 , 2019c ): Clavodorum Hartman & Fauchald, 1971, Commensodorum Fauchald, 1974, Euritmia Sardá-Borroy, 1987, Geminofilum Capa, Nygren, Parapar, Bakken, Meißner & Moreira, 2019c, Sphaerephesia Fauchald, 1972, Sphaerodoridium Lützen, 1961, Sphaerodoropsis Hartman & Fauchald, 1971 and Sphaerodorum Örsted, 1843. Ten species have been reported from Australian waters ( Capa and Bakken 2015 ), most of them were collected in shallow waters (< 80 m), except for Sphaerodorum australiensis (Hartmann-Schröder, 1982) reported from around Australia < 400 m deep, Sphaerephesia longofalcigera (Capa & Bakken, 2015) collected at ~ 400 m deep, north of Perth, WA, and Sphaerephesia sp.…”

Section: Resultsmentioning

confidence: 99%

Annelids of the eastern Australian abyss collected by the 2017 RV ‘Investigator’ voyage

Gunton¹,

Kupriyanova²,

Alvestad³

et al. 2021

Self Cite

View full text Add to dashboard Cite

In Australia, the deep-water (bathyal and abyssal) benthic invertebrate fauna is poorly known in comparison with that of shallow (subtidal and shelf) habitats. Benthic fauna from the deep eastern Australian margin was sampled systematically for the first time during 2017 RV ‘Investigator’ voyage ‘Sampling the Abyss’. Box core, Brenke sledge, and beam trawl samples were collected at one-degree intervals from Tasmania, 42°S, to southern Queensland, 24°S, from 900 to 4800 m depth. Annelids collected were identified by taxonomic experts on individual families around the world. A complete list of all identified species is presented, accompanied with brief morphological diagnoses, taxonomic remarks, and colour images. A total of more than 6000 annelid specimens consisting of 50 families (47 Polychaeta, one Echiura, two Sipuncula) and 214 species were recovered. Twenty-seven species were given valid names, 45 were assigned the qualifier cf., 87 the qualifier sp., and 55 species were considered new to science. Geographical ranges of 16 morphospecies extended along the eastern Australian margin to the Great Australian Bight, South Australia; however, these ranges need to be confirmed with genetic data. This work providing critical baseline biodiversity data on an important group of benthic invertebrates from a virtually unknown region of the world’s ocean will act as a springboard for future taxonomic and biogeographic studies in the area.

show abstract

Section: Resultsmentioning

confidence: 99%

Annelids of the eastern Australian abyss collected by the 2017 RV ‘Investigator’ voyage

Gunton¹,

Kupriyanova²,

Alvestad³

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Sphaerodoridaementioning

confidence: 99%

“…The family currently includes 131 species classified in eight genera [6,446,447,[450][451][452][453]. As currently delineated, the most speciose genus is Sphaerephesia Fauchald, 1972 [138] (36 species), followed by Sphaerodorum Örsted, 1843 [71] (24), Sphaerodoridium Lützen, 1961 [454] (24), and Geminofilum Capa et al 2019 [453] (19). In turn, Commensodorum Fauchald, 1974 [455] is monospecific, with Commensodorum commensalis (Lützen, 1961) [454] having a particularly remarkable external morphology, with reduced epithelial tubercles [453].…”

Section: Sphaerodoridaementioning

confidence: 99%

“…thought to be the most speciose, showed from four dorsal longitudinal rows of macrotubercles in a single, transverse, segmental row, to numerous dorsal longitudinal and transverse rows of tubercles (Figure 23b); and (4) Clavodorum and Sphaerodoridium showed six or more dorsal longitudinal rows of stalked macrotubercles [447]. Although still incomplete (i.e., representatives of some genera were missing), the new classification based on phylogenetic analyses of nuclear and mitochondrial DNA showed Sphaerodoropsis as being split in three major clades: (1) Sphaerodoropsis Group 1 sensu Borowski [466], should be synonymized with Sphaerephesia [453] to group all sphaerodorids with four longitudinal rows of sessile macrotubercles (regardless if they are smooth or with a terminal papilla, spherical or hemispherical) arranged in a single transverse row per segment; (2) Sphaerodoropsis Group 3 sensu Borowski [466] is characterized by having two transverse rows of sessile macrotubercles per segment, leading to the erection of Geminofilum [453]; and (3) Sphaerodoropsis Group 2 sensu Borowski [466] that has sessile macrotubercles arranged in more than six longitudinal rows (in a single transverse row per segment) was found nested with other sphaerodorids with stalked macrotubercles and a similar arrangement. Consequently, it was included in Sphaerodoridium.…”

Section: Sphaerodoridaementioning

confidence: 99%

See 1 more Smart Citation

On the Diversity of Phyllodocida (Annelida: Errantia), with a Focus on Glyceridae, Goniadidae, Nephtyidae, Polynoidae, Sphaerodoridae, Syllidae, and the Holoplanktonic Families

et al. 2021

Self Cite

View full text Add to dashboard Cite

Phyllodocida is a clade of errantiate annelids characterized by having ventral sensory palps, anterior enlarged cirri, axial muscular proboscis, compound chaetae (if present) with a single ligament, and of lacking dorsolateral folds. Members of most families date back to the Carboniferous, although the earliest fossil was dated from the Devonian. Phyllodocida holds 27 well-established and morphologically homogenous clades ranked as families, gathering more than 4600 currently accepted nominal species. Among them, Syllidae and Polynoidae are the most specious polychaete groups. Species of Phyllodocida are mainly found in the marine benthos, although a few inhabit freshwater, terrestrial and planktonic environments, and occur from intertidal to deep waters in all oceans. In this review, we (1) explore the current knowledge on species diversity trends (based on traditional species concept and molecular data), phylogeny, ecology, and geographic distribution for the whole group, (2) try to identify the main knowledge gaps, and (3) focus on selected families: Alciopidae, Goniadidae, Glyceridae, Iospilidae, Lopadorrhynchidae, Polynoidae, Pontodoridae, Nephtyidae, Sphaerodoridae, Syllidae, Tomopteridae, Typhloscolecidae, and Yndolaciidae. The highest species richness is concentrated in European, North American, and Australian continental shelves (reflecting a strong sampling bias). While most data come from shallow coastal and surface environments most world oceans are clearly under-studied. The overall trends indicate that new descriptions are constantly added through time and that less than 10% of the known species have molecular barcode information available.

show abstract

“…However, recent biodiversity surveys and projects aiming at mapping species occurrences, and environmental monitoring have shown that there is still more to explore and surprises to be unveiled. New species are still being discovered and described ( Kongsrud et al 2011 ; Nygren and Pleijel 2011 ; Bakken et al 2014 ; Nygren et al 2018 ; Capa et al 2019 ), and studies of faunal characteristics ( Oug et al 2017 ) and distribution patterns ( Eilertsen et al 2018 ) show novelties not previously reported.…”

Section: Introductionmentioning

confidence: 99%

Describing the hidden species diversity of Chaetozone (Annelida, Cirratulidae) in the Norwegian Sea using morphological and molecular diagnostics

Grosse¹,

Bakken²

2021

Self Cite

View full text Add to dashboard Cite

Using molecular markers and species delimitation analyses, a high diversity of bi-tentaculate Cirratulidae was discovered from the North-East Atlantic. Five new species are described: Chaetozone pseudosetosasp. nov., Chaetozone quintasp. nov., Chaetozone barentsensissp. nov., Chaetozone monteverdiisp. nov., and Chaetozone chambersaesp. nov. Several morphogroups are also described, even though the presence of cryptic diversity prevented naming of individual species. For each species presented, a molecular diagnostic is given from the universal barcode COI and, when available, the D1–D2 domains of the 28S rRNA. This increases the number of species in Chaetozone in northern European waters from ten to at least 17 species, the exact number of species remaining uncertain as taxonomic issues with older names remain unresolved.

show abstract

Systematic re-structure and new species of Sphaerodoridae (Annelida) after morphological revision and molecular phylogenetic analyses of the North East Atlantic fauna

Cited by 5 publications

References 54 publications

Annelids of the eastern Australian abyss collected by the 2017 RV ‘Investigator’ voyage

Annelids of the eastern Australian abyss collected by the 2017 RV ‘Investigator’ voyage

On the Diversity of Phyllodocida (Annelida: Errantia), with a Focus on Glyceridae, Goniadidae, Nephtyidae, Polynoidae, Sphaerodoridae, Syllidae, and the Holoplanktonic Families

Describing the hidden species diversity of Chaetozone (Annelida, Cirratulidae) in the Norwegian Sea using morphological and molecular diagnostics

Contact Info

Product

Resources

About