Marine Biodiversity

, Volume 48, Issue 1, pp 603–620 | Cite as

Deep-sea amphipod genus Eurythenes from Japan, with a description of a new Eurythenes species from off Hokkaido (Crustacea: Amphipoda: Lysianassoidea)

  • Yukiko Narahara-Nakano
  • Takafumi Nakano
  • Ko Tomikawa
Original Paper


Two species of the giant deep-sea amphipod genus Eurythenes are reported from two bathyal habitats in Japanese waters based on a morphological examination and DNA analyses. The new species E. aequilatus collected off Hokkaido in the Sea of Okhotsk comprises a distinctive lineage within the known Eurythenes species and genetic groups. This finding sheds light onto the overlooked role of the marginal deep sea in the species diversification history of Eurythenes. Eurythenes specimens collected from the south off Okinawa Island in the Philippine Sea were identified as E. magellanicus, confirming the presence of a population in the western North Pacific. Past and present trans-oceanic dispersal of this species is briefly discussed based on the mitochondrial DNA sequences obtained from the Okinawa specimens of E. magellanicus.


Eurytheneidae Molecular phylogeny Cryptic species Pacific Ocean Long-distance dispersal 



The authors are grateful to Keiichi Kakui (Hokkaido University), Atsushi Kaneko (Okinawa Churaumi Aquarium, OCA), and Kenta Yamada (OCA) for providing valuable specimens of Eurythenes species. We also express our sincere thanks to Hidetoshi Nagamasu (The Kyoto University Museum) for his helpful advice on a specific name for the new species, and to Cédric d’Udekem d’Acoz (Royal Belgian Institute of Natural Sciences) and one anonymous reviewer for their constructive comments and suggestions on this manuscript. Thanks are extended to the captain and crew of the R/V Soyo-Maru (Japan Fisheries Research and Education Agency). This study was partly supported by JSPS KAKENHI grant numbers JP25242015, JP25840140, and JP15J00720.

Supplementary material

12526_2017_758_MOESM1_ESM.xlsx (45 kb)
ESM 1 (XLSX 44 kb)


  1. Aramaki T, Watanabe S, Kuji T, Wakatsuchi M (2001) The Okhotsk-Pacific seawater exchange in the viewpoint of vertical profiles of radiocarbon around the Bussol’ strait. Geophys Res Lett 28:3971–3974. doi: 10.1029/2001GL013227 CrossRefGoogle Scholar
  2. Baldwin RJ, Smith KL (1987) Temporal variation in the catch rate, length, color and sex of the necrophagous amphipod, Eurythenes gryllus, from the central and eastern North Pacific. Deep Sea Res Part I Oceanogr Res Pap 34:425–439. doi: 10.1016/0198-0149(87)90146-4 CrossRefGoogle Scholar
  3. Corrigan LJ, Horton T, Fotherby H, White TA, Hoelzel AR (2014) Adaptive evolution of deep-sea amphipods from the superfamily Lysiassanoidea in the North Atlantic. Evol Biol 41:154–165. doi: 10.1007/s11692-013-9255-2 CrossRefGoogle Scholar
  4. De Broyer C, Lowry JK, Jażdżewski K, Robert H (2007) Census of Antarctic marine life. Synopsis of the Amphipoda of the Southern Ocean. Edited by Calude de Broyer. Volume 1: part 1. Catalogue of the Gammaridean and Corophiidean Amphipoda (Crustacea) of the Southern Ocean, with distribution and ecological data. Bull Inst R Sci Nat Belg Biol 77:1–324Google Scholar
  5. d’Udekem d’Acoz C, Havermans C (2015) Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae). Zootaxa 3971:1–80. doi: 10.11646/zootaxa.3971.1.1 CrossRefGoogle Scholar
  6. Escobar-Briones E, Nájera-Hillman E, Álvarez F (2010) Unique 16S rDNA sequences of Eurythenes gryllus (Crustacea: Amphipoda: Lysianassidae) from the Gulf of Mexico abyssal plain. Rev Mex Biodivers 81:177–185Google Scholar
  7. Eustace RM, Ritchie H, Kilgallen NM, Piertney SB, Jamieson AJ (2016) Morphological and ontogenetic stratification of abyssal and hadal Eurythenes gryllus sensu lato (Amphipoda: Lysianassoidea) from the Peru–Chile Trench. Deep Sea Res Part I Oceanogr Res Pap 109:91–98. doi: 10.1016/j.dsr.2015.11.005 CrossRefGoogle Scholar
  8. France SC, Kocher TD (1996) Geographic and bathymetric patterns of mitochondrial 16S rRNA sequence divergence among deep-sea amphipods, Eurythenes gryllus. Mar Biol 126:633–643. doi: 10.1007/bf00351330 CrossRefGoogle Scholar
  9. Hasegawa M, Kurohiji Y, Takayanagi S, Sawadaishi S, Yao M (1986) Collection of fish and Amphipoda from abyssal sea-floor at 30° N–147° E using traps tied to 10.000 m wire of research vessel. Bull Tokai Reg Fish Res Lab 119:65–75Google Scholar
  10. Havermans C (2016) Have we so far only seen the tip of the iceberg? Exploring species diversity and distribution of the giant amphipod Eurythenes. Biodiversity 17:12–25. doi: 10.1080/14888386.2016.1172257 CrossRefGoogle Scholar
  11. Havermans C, Sonet G, d’Udekem d’Acoz C, Nagy ZT, Martin P, Brix S, Riehl T, Agrawal S, Held C (2013) Genetic and morphological divergences in the cosmopolitan deep-sea amphipod Eurythenes gryllus reveal a diverse abyss and a bipolar species. PLoS One 8:e74218. doi: 10.1371/journal.pone.0074218 CrossRefPubMedPubMedCentralGoogle Scholar
  12. Hill KL, Weaver AJ, Freeland HJ, Bychkov A (2003) Evidence of change in the sea of Okhotsk: implications for the north Pacific. Atmos Ocean 41:49–63. doi: 10.3137/ao.410104 CrossRefGoogle Scholar
  13. Katoh K, Standley DM (2013) MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Mol Biol Evol 30:772–780. doi: 10.1093/molbev/mst010 CrossRefPubMedPubMedCentralGoogle Scholar
  14. Kawabe M, Fujio S (2010) Pacific ocean circulation based on observation. J Oceanogr 66:389–403. doi: 10.1007/s10872-010-0034-8 CrossRefGoogle Scholar
  15. Lanfear R, Frandsen PB, Wright AM, Senfeld T, Calcott B (2017) PartitionFinder 2: new methods for selecting partitioned models of evolution for molecular and morphological phylogenetic analyses. Mol Biol Evol 34:772–773. doi: 10.1093/molbev/msw260 PubMedCrossRefGoogle Scholar
  16. Lilljeborg W (1865) On the Lysianassa magellanica H. Milne Edwards, and on the Crustacea of the suborder Amphipoda and subfamily Lysianassina found an the coast of Sweden and Norway. The Royal Acad. Press, Upsala. doi: 10.5962/bhl.title.6806 CrossRefGoogle Scholar
  17. Lowry JK, Stoddart HE (1995) The Amphipoda (Crustacea) of Madang lagoon: Lysianassidae, Opisidae, Uristidae, Wandinidae and Stegocephalidae. Rec Aust Mus Suppl 22:97–174. doi: 10.3853/j.0812-7387.22.1995.122 CrossRefGoogle Scholar
  18. Nagano A, Ichikawa H, Miura T, Ichikawa K, Konda M, Yoshikawa Y, Obama K, Murakami K (2007) Current system east of the Ryukyu Islands. J Geophys Res Oceans 112:C06009. doi: 10.1029/2006JC003917 CrossRefGoogle Scholar
  19. Nakano T (2012a) A new species of Orobdella (Hirudinida, Arhynchobdellida, Gastrostomobdellidae) and redescription of O. kawakatsuorum from Hokkaido, Japan with the phylogenetic position of the new species. ZooKeys 169:9–30. doi: 10.3897/zookeys.169.2425 CrossRefGoogle Scholar
  20. Nakano T (2012b) A new sexannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from Yakushima Island, Japan. ZooKeys 181:79–93. doi: 10.3897/zookeys.181.2932 CrossRefGoogle Scholar
  21. Rambaut A, Drummond AJ (2013) Tracer v1.6. Home page at: Accessed 24 May 2015
  22. Ritchie H, Jamieson AJ, Piertney SB (2015) Phylogenetic relationships among hadal amphipods of the superfamily Lysianassoidea: implications for taxonomy and biogeography. Deep Sea Res Part I Oceanogr Res Pap 105:119–131. doi: 10.1016/j.dsr.2015.08.014 CrossRefGoogle Scholar
  23. Ronquist F, Teslenko M, van der Mark P, Ayres DL, Darling A, Höhna S, Larget B, Liu L, Suchard MA, Huelsenbeck JP (2012) MrBayes 3.2: efficient Bayesian phylogenetic inference and model choice across a large model space. Syst Biol 61:539–542. doi: 10.1093/sysbio/sys029 CrossRefPubMedPubMedCentralGoogle Scholar
  24. Scudder SH (1882) Nomenclator Zoologicus. An alphabetical list of all generic names that have been employed by naturalists for recent and fossil animals from the earliest times to the close of the year 1879. In two parts: I. Supplemental list. II. Universal index. U.S. National Museum, WashingtonCrossRefGoogle Scholar
  25. Stamatakis A (2014) RAxML version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies. Bioinformatics 30:1312–1313. doi: 10.1093/bioinformatics/btu033 CrossRefPubMedPubMedCentralGoogle Scholar
  26. Stoddart HE, Lowry JK (2004) The deep-sea lysianassoid genus Eurythenes (Crustacea, Amphipoda, Eurytheneidae n. Fam.). Zoosystema 26:425–468Google Scholar
  27. Talley LD (2001) Okhotsk Sea circulation. In: Steele JH, Thorpe SA (ed) Encyclopedia of ocean sciences, 1st edn. Academic Press, Oxford, pp 2007–2015. doi: 10.1006/rwos.2001.0384 CrossRefGoogle Scholar
  28. Tanabe AS (2008) Phylogears v2.0.2014.03.08. Home page at: Accessed 24 May 2015
  29. Thoppil PG, Metzger EJ, Hurlburt HE, Smedstad OM, Ichikawa H (2016) The current system east of the Ryukyu Islands as revealed by a global ocean reanalysis. Prog Oceanogr 141:239–258. doi: 10.1016/j.pocean.2015.12.013 CrossRefGoogle Scholar
  30. Thurston MH, Petrillo M, Della Croce N (2002) Population structure of the necrophagous amphipod Eurythenes gryllus (Amphipoda: Gammaridea) from the Atacama Trench (south-east Pacific Ocean). J Mar Biol Assoc UK 82:205–211. doi: 10.1017/S0025315402005374 CrossRefGoogle Scholar
  31. Tomikawa K, Nakano T, Sato A, Onodera Y, Ohtaka A (2016a) A molecular phylogeny of Pseudocrangonyx from Japan, including a new subterranean species (Crustacea, Amphipoda, Pseudocrangonyctidae). Zoosyst Evol 92:187–202. doi: 10.3897/zse.92.10176 CrossRefGoogle Scholar
  32. Tomikawa K, Tanaka H, Nakano T (2016b) A new species of the rare genus Priscomilitaris from the Seto Inland Sea, Japan (Crustacea, Amphipoda, Priscomilitaridae). ZooKeys 607:25–35. doi: 10.3897/zookeys.607.9379 CrossRefGoogle Scholar
  33. Umezu T (1982) Deep-sea pelagos. Part II. Collection by RV KAIYO-Maru for radionuclide analysis. Aquabiology (Tokyo) 4:2–9Google Scholar
  34. Umezu T (1984) Deep-sea biomass in North Pacific polar frontal zone 40° N–150° E: collected by KOC-net from 150–4500 m depth in May 1981. Bull Tokai Reg Fish Res Lab 113:115–139Google Scholar
  35. Zhang Z, Zhao W, Tian J, Yang Q, Qu T (2015) Spatial structure and temporal variability of the zonal flow in the Luzon Strait. J Geophys Res Oceans 120:759–776. doi: 10.1002/2014JC010308 CrossRefGoogle Scholar
  36. Zhao X, Zhou C, Zhao W, Tian J, Xu X (2016) Deepwater overflow observed by three bottom-anchored moorings in the Bashi Channel. Deep Sea Res Part I Oceanogr Res Pap 110:65–74. doi: 10.1016/j.dsr.2016.01.007 CrossRefGoogle Scholar

Copyright information

© Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of Science Education, Graduate School of EducationHiroshima UniversityHigashihiroshimaJapan

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