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    Urata, Makoto 2015. Molecular Identification ofPtychodera flava(Hemichordata: Enteropneusta): Reconsideration in Light of Nucleotide Polymorphism in the 18S Ribosomal RNA Gene. Zoological Science, Vol. 32, Issue. 3, p. 307.

  • Journal of the Marine Biological Association of the United Kingdom, Volume 93, Issue 8
  • December 2013, pp. 2197-2205

Rediscovery and augmented description of the HMS ‘Challenger’ acorn worm (Hemichordata, Enteropneusta), Glandiceps abyssicola, in the equatorial Atlantic abyss

  • Nicholas D. Holland (a1), Karen J. Osborn (a2), Andrey V. Gebruk (a3) and Antonina Rogacheva (a3)
  • DOI:
  • Published online: 09 July 2013

A 2009 oceanographic expedition of the Russian Academy of Sciences collected the anterior region of a single acorn worm (phylum Hemichordata, class Enteropneusta) by trawling at a depth of 5560 m in the Romanche Trench (equatorial Atlantic). The specimen was a ripe female with numerous, relatively small oocytes in each ovary. Phylogenetic analysis of rDNA sequences robustly placed the worm in the family Spengelidae. In addition, morphological features of the proboscis, collar, and anterior trunk region indicated that the worm was Glandiceps abyssicola, a species previously represented solely by the holotype, which had been dredged from the equatorial Atlantic in 1873 by the HMS ‘Challenger’ and subsequently sent to Germany for description by Spengel (1893). The holotype was presumably destroyed by World War II bombing; therefore, we here designate the Romanche Trench specimen as the neotype of G. abyssicola and supply an augmented species diagnosis.

Corresponding author
Correspondence should be addressed to: N.D. Holland, Marine Biology Research Division, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093USA email:
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J.M. An and X.Z. Li (2005) First record of the family Spengeliidae [sic] (Hemichordata: Enteropneusta) from Chinese waters, with description of a new species. Journal of Natural History 39, 19952004.

T.J. Anderson , R. Przeslawski and M. Tran (2011) Distribution, abundance and trail characteristics of acorn worms at Australian continental margins. Deep-Sea Research Part II 58, 970978.

W. Bateson (1885) Note on the later stages in the development of Balanoglossus kowalevskii (Agassiz), and on the affinities of the Enteropneusta. Proceedings of the Royal Society of London, B 38, 2330.

A.G. Cole and B.K. Hall (2004) The nature and significance of invertebrate cartilages revisited: distribution and histology of cartilage and cartilage-like tissues within the Metazoa. Zoology (Jena) 107, 261273.

M.G. Hadfield (1975) Hemichordata. In A.C. Giese and J.S. Pearse (eds) Reproduction in marine invertebrates. Volume 2. New York: Academic Press, pp. 185240.

N.D. Holland , D.A. Clague , D.P. Gordon , A. Gebruk , D.L. Pawson and M. Vecchione (2005) ‘Lophenteropneust’ hypothesis refuted by collection and photos of new deep-sea hemichordates. Nature 434, 374376.

N.D. Holland , W.J. Jones , J. Ellena , H.A. Ruhl and K.L. Smith (2009) A new deep-sea species of epibenthic acorn worm (Hemichordata, Enteropneusta). Zoosystema 31, 333346.

N.D. Holland , L.A. Kuhnz and K.J. Osborn (2012a) Morphology of a new deep-sea acorn worm (class Enteropneusts, phylum Hemichordata): a part-time demersal drifter with externalized ovaries. Journal of Morphology 273, 661671.

N.D. Holland , K.J. Osborn and L.A. Kuhnz (2012b) A new deep-sea species of harrimaniid enteropneust (Hemichordata). Proceedings of the Biological Society of Washington 125, 228240.

E.G. Morozov , R.Y. Tarakanov , T.A. Demidova and Y.A. Zyulyaeva (2010) Measurements of currents in the Kane and Romanche underwater channels during cruise 29 of the research vessel Akademik Ioffe. Oceanology 50, 623626.

K.J. Osborn , L.A. Kuhnz , I.J. Priede , M. Urata , A.V. Gebruk and N.D. Holland (2012) Diversification of acorn worms (Hemichordata, Enteropneusta) revealed in the deep sea. Proceedings of the Royal Society, B 279, 16461654.

D. Posada (2008) jModelTest: phylogenetic model averaging. Molecular Biology and Evolution 25, 12531256.

I.J. Priede , K.J. Osborn , A.V. Gebruk , D. Jones , D. Shale , A. Rogacheva and N.D. Holland (2012) Observations on torquaratorid acorn worms (Hemichordata, Enteropneusta) from the North Atlantic with descriptions of a new genus and three new species. Invertebrate Biology 131, 244257.

K.L. Smith , N.D. Holland and H.A. Ruhl (2005) Enteropneust production of spiral fecal trails on the deep-sea floor observed with time-lapse photography. Deep-Sea Research Part I 52, 12281240.

S.S. Spicer (1963) Histochemical differentiation of mammalian mucopolysaccharides. Annals of the New York Academy of Sciences 106, 379388.

C.W. Thomson (1875) Dr R. von Willemoes-Suhm. Nature 13, 8889.

M. Urata , S. Iwasaki and S. Ohtsuka (2012) Biology of the swimming acorn worm Glandiceps hacksi from the Seto Inland Sea of Japan. Zoological Science 29, 305310.

K. Worsaae , W. Sterrer , S. Kaul-Strehlow , A. Hay-Schmidt and G. Giribet (2012) An anatomical description of a miniaturized acorn worm (Hemichordata, Enteropneusta) with asexual reproduction by paratomy. PLoS ONE 7 (11) e48529.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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