Species delimitation analyses of NE Atlantic Chaetozone (Annelida, Cirratulidae) reveals hidden diversity among a common and abundant marine annelid

Grosse, Maël; Bakken, Torkild; Nygren, Arne; Kongsrud, Jon Anders

doi:10.1016/j.ympev.2020.106852

Cited by 23 publications

(38 citation statements)

References 69 publications

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“…The most informative markers in previous studies are COI and ITS (Nygren et al 2018;Lavesque et al 2019). In the present study, analyses have been mainly based on mitochondrial COI, the universal barcoding gene, because it offers no ambiguities in the alignment process, and is the most commonly used in molecular taxonomy in annelids (e.g., Borda et al 2013;Tomioka et al 2016;Álvarez-Campos et al 2017;Aguado et al 2019;Grosse et al 2020) and other taxa (e.g., Kekkonen and Hebert 2014). After species delimitation, identification to the correct nominal species level is ideal, as species names allow the communication, study, quantification, classification, use and management of life on the planet.…”

Section: Discussionmentioning

confidence: 99%

To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic

Parapar¹,

Nygren²,

Moreira³

2020

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The number of described species of the genus Terebellides Sars, 1835 (Annelida, Trichobranchidae) has greatly increased in the last years, particularly in the North East Atlantic. In this context, this paper deals with several putative species recently delineated by molecular means within a well delimited clade of Terebellides. Species are characterised here by a combination of morphological characters, and a complementary nucleotide diagnostic approach. Three species were identified as the nominal species T. stroemii Sars, 1835, T. bigeniculatus Parapar, Moreira & Helgason, 2011 and T. europaeaLavesque et al., 2019. Five species are described as new: T. bakkenisp. nov., T. kongsrudisp. nov., T. norvegicasp. nov., T. ronningaesp. nov. and T. scoticasp. nov. The distinctive morphological characters refer to the branchial shape, absence or presence of papillae on lamellae of anterior margin of branchial dorsal lobes, absence or presence of ciliated papillae dorsal to thoracic notopodia, geniculate chaetae in one or two chaetigers, and the morphology of thoracic and abdominal uncini teeth. Furthermore, the description of T. bigeniculatus is revised and complemented after examination of type specimens. An updated identification key to all species of the genus in NE Atlantic and a proposal of a classification of different types of abdominal uncini to be used in taxonomy are also included.

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Section: Discussionmentioning

confidence: 99%

To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic

Parapar¹,

Nygren²,

Moreira³

2020

Self Cite

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“…Nearly 100 specimens were examined in detail, and morphological comparisons were made between them and with descriptions in the literature. Most specimens have DNA vouchers previously assigned to species via DNA analyses ( Grosse et al 2020 ). The molecular species assignments (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…In biodiversity assessments and monitoring surveys, Norwegian Chaetozone specimens are mainly sorted into four lots, named C. setosa , C. jubata , C. christiei , and C. zetlandica . But a recent study, aiming to address the species diversity of bi-tentaculate cirratulids, combining morphological examination and species delimitation analyses of DNA sequence data of the North-East Atlantic showed that total species richness had been overlooked ( Grosse et al 2020 ). A total of 14 Chaetozone species (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…A total of 14 Chaetozone species (Fig. 1 ), understood to be separately evolving metapopulation lineages ( De Queiroz 2007 ), was recovered ( Grosse et al 2020 ). Three different scenarios for these recovered species based on DNA sequence data were identified: 1) species that unequivocally matched the diagnosis of a nominal species (like the case of Chaetozone setosa ); 2) species that matched the diagnosis of a species complex (e.g., C. zetlandica ); 3) species that did not match any of the currently available Chaetozone species or species complex diagnoses, suggesting they are undescribed.…”

Section: Introductionmentioning

confidence: 99%

“… Cladogram of the different species present in Norway, after Grosse et al (2020) . The species treated in this paper are highlighted in grey.…”

Section: Introductionmentioning

confidence: 99%

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

Grosse¹,

Bakken²

2021

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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.

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Potential loss of biodiversity and the critical importance of taxonomy—An Australian perspective

Hutchings

2021

Advances in Marine Biology

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Species delimitation analyses of NE Atlantic Chaetozone (Annelida, Cirratulidae) reveals hidden diversity among a common and abundant marine annelid

Cited by 23 publications

References 69 publications

To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic

To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic

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

Potential loss of biodiversity and the critical importance of taxonomy—An Australian perspective

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