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Issue: Vol. 5741 No. 1: 5 Jan. 2026
Type: Article
Published: 2026-01-05
DOI: 10.11646/zootaxa.5741.1.6
Page range: 159-172
Abstract views: 322
PDF downloaded: 157

Unveiling a hidden wanderer in the NE Atlantic: a new species of Scalibregma (Annelida, Scalibregmatidae)

Setec énergie environnement—setecinvivo; 358 Z.A. La Grande Halte; 29940; La Forêt-Fouesnant; France
Annelida Bay of Biscay DNA Morphology New species Polychaeta Taxonomy

Abstract

During a biodiversity survey conducted in the Bay of Biscay (Northeast Atlantic Ocean, France) within the framework of offshore wind energy development, a new species of Scalibregma was identified. This species is morphologically and genetically (16S rDNA and COI) characterized, and compared with its nearest congeners. A key for Scalibregma species with branchiae from chaetigers 3 to 5 and DNA sequences for S. celticum Mackie, 1991 and S. inflatum Rathke, 1843 occurring in the same area, are provided as well. Based on molecular phylogenetic analysis using the COI gene, S. celticum is found as sister species of S. drouali sp. nov. Morphologically, the new species is closest to S. stenocerum (Bertelsen & Weston, 1980), but it differs by having a distinct mid-ventral row with large (double) epidermal pads and the presence of hirsute capillaries instead of inconspicuous mid-ventral line and only smooth capillaries as observed in S. stenocerum. The new species potentially occurs from Atlantic French coast (Bay of Biscay) to Moroccan coast between 55 to 104 m depth.

 

References

  1. Agri-Food and Biosciences Institute (2019) Infaunal abundances from mud samples taken from the Outer Ards penninsula (Northern Ireland) in 2014 and 2016 as part of an assessment of the Modiolus modiolus reefs. Version 3.2. Marine Biological Association. Avaialble from: https://www.gbif.org/ (accessed 29 October 2025) https://doi.org/10.17031/u4lvva
  2. Ashworth, J.H. (1901) The anatomy of Scalibregma inflatum Rathke. Quarterly Journal of Microscopical Science, 45, 237–309. [https://www.biodiversitylibrary.org/page/14709616]
  3. https://doi.org/10.1242/jcs.s2-45.178.237
  4. Bakken, T., Oug, E. & Kongsrud, J.A. (2014) Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. Zootaxa, 3753 (2), 101–117. https://doi.org/10.11646/zootaxa.3753.2.1
  5. Bertelsen, R.D. & Weston, D.P. (1980) A new species of Sclerobregma (Polychaeta: Scalibregmatidae) from off the southeastern United States. Proceedings of the Biological Society of Washington, 93 (3), 708–913. [https://www.biodiversitylibrary.org/page/34595846]
  6. Blake, J.A. (2000) Family Scalibregmatidae Malmgren, 1867. In: Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. 7. The Annelida. Part 4. Polychaeta: Fabelligeridae to Sternaspidae. Santa Barbara Museum of Natural History, Santa Barbara, California, pp. 129–144.
  7. Blake, J.A. (2015) New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma. Zootaxa, 4033 (1), 57–93. https://doi.org/10.11646/zootaxa.4033.1.3
  8. Blake, J.A. (2025) New species and records of Scalibregmatidae (Annelida) from the Atlantic Ocean, Indian Ocean, Pacific Ocean, Southern Ocean, and adjacent seas. Megataxa, 16 (1), 1–232. https://doi.org/10.11646/megataxa.16.1.1
  9. Blake, J.A. & Hilbig, B. (1994) Dense infaunal assemblages on the continental slope off Cape Hatteras, North Carolina. Deep Sea Research. Part II. Topical Studies in Oceanography, 41 (4–6), 875–899.
  10. https://doi.org/10.1016/0967-0645(94)90052-3
  11. Blake, J.A. & Maciolek, N.J. (2020) 7.6.2 Travisiidae Hartmann-Schröder, 1971, new family status. In: Purschke, G., Westheide, W. & Böggemann, M. (Eds.), Annelida. De Gruyter, Berlin, pp. 302–311. https://doi.org/10.1515/9783110291681-009
  12. Carr, C.M., Hardy, S.M., Brown, T.M., Macdonald, T.A. & Hebert, P.D.N. (2011) A Tri-Oceanic Perspective: DNA Barcoding Reveals Geographic Structure and Cryptic Diversity in Canadian Polychaetes Badger, J. H. (Ed). PLoS ONE, 6 (7), e22232. https://doi.org/10.1371/journal.pone.0022232
  13. Clark, K., Karsch-Mizrachi, I., Lipman, D.J., Ostell, J. & Sayers, E.W. (2016) GenBank. Nucleic Acids Research, 44 (D1), D67–D72. https://doi.org/10.1093/nar/gkv1276
  14. Edgar, R.C. (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Research, 32 (5), 1792–1797. https://doi.org/10.1093/nar/gkh340
  15. Folk, R.L. (1954) The Distinction between Grain Size and Mineral Composition in Sedimentary-Rock Nomenclature. The Journal of Geology, 62 (4), 344–359. https://doi.org/10.1086/626171
  16. Fauchald, K. & Rouse, G. (1997) Polychaete systematics: Past and present. Zoologica Scripta, 26 (2), 71–138. https://doi.org/10.1111/j.1463-6409.1997.tb00411.x
  17. Fauvel, P. (1927) Polychètes sédentaires. Addenda aux Errantes, Archiannélides, Myzostomaires. Faune de France, 16, 1–494. [http://www.faunedefrance.org/bibliotheque/docs/P.FAUVEL(FdeFr16)Polychetes-sendentaires.pdf]
  18. Folmer, O., Black, M., Hoeh, W., Lutz, R. & Vrijenhoek, R. (1994) DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Molecular Marine Biology and Biotechnology, 3 (5), 294–299.
  19. Furreg, E. (1925) Zur Systematik der Polychätenfamilie Scalibregmidae. Zoologische Jahrbücher für Systematik, Geographie und Biologie der Tiere, 50 (2), 123–190.
  20. Gil, J. (2011) The European Fauna of Annelida Polychaeta. Stein Girona S.L., Girona, 1554 pp.
  21. Guindon, S., Dufayard, J.-F., Lefort, V., Anisimova, M., Hordijk, W. & Gascuel, O. (2010) New Algorithms and Methods to Estimate Maximum-Likelihood Phylogenies: Assessing the Performance of PhyML 3.0. Systematic Biology, 59 (3), 307–321. https://doi.org/10.1093/sysbio/syq010
  22. Hartman, O. (1959) Catalogue of the polychaetous annelids of the world. Allan Hancock Foundation, 23, 1–628.
  23. Hartmann-Schröder, G. (1971) Teil 58. Annelida, Borstenwürmer, Polychaeta. In: Dahl, M. & Peus, F. (Eds.), Die Tierwelt Deutschlands und der angrenzenden Meeresteile nach ihren Merkmalen und nach ihrer Lebensweise. Vol. 58. Gustav Fischer, Jena, pp. 1–594.
  24. https://doi.org/10.1086/407180
  25. Hawes, J., Arosio, R., Bolam, S. & McCabe, C. (2019) Offshore Overfalls Marine Conservation Zone (MCZ) Monitoring Report 2019. JNCC, Peterborough, 122 pp.
  26. Hoang, D.T., Chernomor, O., Von Haeseler, A., Minh, B.Q. & Vinh, L.S. (2018) UFBoot2: Improving the Ultrafast Bootstrap Approximation. Molecular Biology and Evolution, 35 (2), 518–522. https://doi.org/10.1093/molbev/msx281
  27. Johnston, G. (1840) XLIII—Miscellanea Zoologica. Annals and Magazine of Natural History, Series 1, 4 (26), 368–375. https://doi.org/10.1080/00222934009512507
  28. Jumars, P.A., Dorgan, K.M. & Lindsay, S.M. (2015) Diet of Worms Emended: An Update of Polychaete Feeding Guilds. Annual Review of Marine Science, 7 (1), 497–520. https://doi.org/10.1146/annurev-marine-010814-020007
  29. Kalyaanamoorthy, S., Minh, B.Q., Wong, T.K.F., Von Haeseler, A. & Jermiin, L.S. (2017) ModelFinder: fast model selection for accurate phylogenetic estimates. Nature Methods, 14 (6), 587–589. https://doi.org/10.1038/nmeth.4285
  30. Katoh, K., Misawa, K., Kuma, K. & Miyata, T. (2002) MAFFT: a novel method for rapid multiple sequence alignment based on fast Fourier transform. Nucleic Acids Research, 30 (14), 3059–3066. https://doi.org/10.1093/nar/gkf436
  31. Kimura, M. (1980) A simple method for estimating evolutionary rate of base substitutions through comparative studies of nucleotide sequences. Journal of Molecular Evolution, 16, 111–120.
  32. https://doi.org/10.1007/BF01731581
  33. Kudenov, J.D. & Blake, J.A. (1978) A review of the genera and species of the Scalibregmidae (Polychaeta) with descriptions of one new genus and three new species from Australia. Journal of Natural History, 12 (4), 427–444. https://doi.org/10.1080/00222937800770291
  34. Mackie, A. (1991) Scalibregma celticum new species (Polychaeta: Scalibregmatidae) from Europe, with a redescription of Scalibregma inflatum Rathke, 1843 and comments on the genus Sclerobregma Hartman, 1965. Bulletin of Marine Science, 48, 268–276. [https://www.ingentaconnect.com/content/umrsmas/bullmar/1991/00000048/00000002/art00015]
  35. Mackie, A., Oliver, G. & Rees, E.I.S. (1995) Benthic biodiversity in the southern Irish Sea. Studies in Marine Biodiversity and Systematics from the National Museum of Wales. BIOMÔR Reports, 1, 1–263.
  36. Malmgren, A.J. (1867) Annulata polychaeta; Spetsbergiæ, Grnlandiæ, Islandiæ et Scandinaviæ. Hactenus cognita. Ex Officina Frenckelliana, Helsingforsiæ, 206 pp. [https://www.biodiversitylibrary.org/item/47822]
  37. https://doi.org/10.5962/bhl.title.13358
  38. Martínez, A., Di Domenico, M. & Worsaae, K. (2013) Evolution of cave Axiokebuita and Speleobregma (Scalibregmatidae, Annelida). Zoologica Scripta, 42 (6), 623–636. https://doi.org/10.1111/zsc.12024
  39. Mendes, S.L.D.S.D., Rizzo, A.E. & Paiva, P.C.D. (2023) Unravelling the diversity of Scalibregma Rathke, 1843 (Annelida: ‘Polychaeta’: Scalibregmatidae) from southeast Brazilian coast. Zootaxa, 5353 (5), 441–454. https://doi.org/10.11646/zootaxa.5353.5.3
  40. Nguyen, L.-T., Schmidt, H.A., Von Haeseler, A. & Minh, B.Q. (2015) IQ-TREE: A Fast and Effective Stochastic Algorithm for Estimating Maximum-Likelihood Phylogenies. Molecular Biology and Evolution, 32 (1), 268–274. https://doi.org/10.1093/molbev/msu300
  41. OBIS (2025) Ocean Biodiversity Information System. Intergovernmental Oceanographic Commission of UNESCO, Paris. Available from: https://obis.org (accessed 4 October 2025)
  42. Ørsted, A.S. (Anders Sandøe) (1843) Annulatorum danicorum conspectus Fasc. I. Maricolæ. Sumtibus Librariæ Wahlianæ, Hafniæ, 7 pls., 52 pp. [https://www.biodiversitylibrary.org/item/44441]
  43. https://doi.org/10.5962/bhl.title.11849
  44. Palumbi, S.R. (1996) The polymerase chain reaction. In: Hillis, D.M., Moritz, C. & Mable, B.K. (Eds.), Molecular systematics. Sinauer Associates, Sunderland, Mass., pp. 205–247.
  45. Parapar, J., Martínez, A. & Moreira, J. (2021) On the Systematics and Biodiversity of the Opheliidae and Scalibregmatidae. Diversity, 13 (2), 87.
  46. https://doi.org/10.3390/d13020087
  47. Paterson, G.L.J., Glover, A.G., Barrio Froján, C.R.S., Whitaker, A., Budaeva, N., Chimonides, J. & Doner, S. (2009) A census of abyssal polychaetes. Deep Sea Research Part II: Topical Studies in Oceanography, 56 (19–20), 1739–1746. https://doi.org/10.1016/j.dsr2.2009.05.018
  48. Pears, S. & Worsfold, T.M. (2011) Consolidation and analysis of benthos data from the Marine Aggregate Regional Environmental Assessment (MAREA) of the Humber Region. Thomson Unicomarine, Dunedin. [unknown pagination]
  49. Ratnasingham, S., Wei, C., Chan, D., Agda, J., Agda, J., Ballesteros-Mejia, L., Boutou, H.A., El Bastami, Z.M., Ma, E., Manjunath, R., Rea, D., Ho, C., Telfer, A., McKeowan, J., Rahulan, M., Steinke, C., Dorsheimer, J., Milton, M. & Hebert, P.D.N. (2024) BOLD v4: A Centralized Bioinformatics Platform for DNA-Based Biodiversity Data. In: DeSalle, R. (Ed.), DNA Barcoding. Vol. 2744. Methods in Molecular Biology. Springer US, New York, New York, pp. 403–441.
  50. https://doi.org/10.1007/978-1-0716-3581-0_26
  51. Read, G.; Fauchald, K. (Ed.) (2025) World Polychaeta Database. Scalibregma Rathke, 1843. Accessed through: World Register of Marine Species. Available from: https://www.marinespecies.org/aphia.php?p=taxdetails&id=129555 (accessed 9 Oct. 2025)
  52. Sars, M. (1846) Fauna littoralis Norvegiae oder Beschreibung und Abbildungen neuer oderwenig bekannter Seethiere, nebst Beobachtungen über die Organisation, Lebensweise und Entwickelung derselben. Johann Dahl, Christiania, 94 pp.
  53. https://doi.org/10.5962/bhl.title.57954
  54. Sjölin, E., Erséus, C. & Källersjö, M. (2005) Phylogeny of Tubificidae (Annelida, Clitellata) based on mitochondrial and nuclear sequence data. Molecular Phylogenetics and Evolution, 35 (2), 431–441. https://doi.org/10.1016/j.ympev.2004.12.018
  55. Støp-Bowitz, C. (1945) Les Scalibregmiens de Norvege. Meddelelser fra det Zoologiske Museum, 55, 63–87.
  56. Tamura, K., Stecher, G., Peterson, D., Filipski, A. & Kumar, S. (2013) MEGA6: Molecular Evolutionary Genetics Analysis Version 6.0. Molecular Biology and Evolution, 30 (12), 2725–2729. https://doi.org/10.1093/molbev/mst197
  57. Trifinopoulos, J., Nguyen, L.-T., von Haeseler, A. & Minh, B.Q. (2016) W-IQ-TREE: a fast online phylogenetic tool for maximum likelihood analysis. Nucleic Acids Research, 44 (W1), W232–W235. https://doi.org/10.1093/nar/gkw256
  58. Wiklund, H., Neal, L., Glover, A.G., Drennan, R., Rabone, M. & Dahlgren, T.G. (2019) Abyssal fauna of polymetallic nodule exploration areas, eastern Clarion-Clipperton Zone, central Pacific Ocean: Annelida: Capitellidae, Opheliidae, Scalibregmatidae, and Travisiidae. ZooKeys, 883, 1–82. https://doi.org/10.3897/zookeys.883.36193
  59. Zachs, I. (1923) Polychaeta of the Barents and White Seas. Trudy pervago vserossi iskogo s’ezda zoologov anatomov i gistolov Petrograd, 1, 55–57.

How to Cite

Bonifácio, P. (2026) Unveiling a hidden wanderer in the NE Atlantic: a new species of Scalibregma (Annelida, Scalibregmatidae). Zootaxa, 5741 (1), 159–172. https://doi.org/10.11646/zootaxa.5741.1.6