Folia Parasitologica, vol. 62 (2015)

Folia Parasitologica 62:028 (2015) | 10.14411/fp.2015.028

Heliconema anguillae Yamaguti, 1935, a physalopterid nematode found in Japanese eels: taxonomic resurrection with a note on the third-stage larva from intertidal crabs in western Japan

Hirotaka Katahira1, Kazuya Nagasawa2
1 Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido, Japan;
2 Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan

A parasitic nematode from the stomach of Japanese eel Anguilla japonica Temminck et Schlegel in western Japan, previously identified as Heliconema longissimum (Ortlepp, 1922), was morphologically re-examined and compared with the previous descriptions. In addition, the third-stage larva of this nematode is described, based on the specimens of encapsuled larvae found in musculature of two crabs, Hemigrapsus sp. and Perisesarma bidens (De Haan), caught from the upper-intertidal zone of the same locality. As a result of the morphological observation, seven pairs of postcloacal papillae in adult males are confirmed. This matches with the character of H. longissimum, but the shape of the fifth postcloacal papillae differs between the present material and H. longissimum; the former possesses pedunculate papillae in the fifth pair whereas the latter has sessile papillae. Since the pedunculate papillae can be found in the original description and the syntype specimens of H. anguillae Yamaguti, 1935 that has been synonymised with H. longissimum, we thus here resurrect H. anguillae as an accepted species. For the life-cycle of the present nematode, littoral crabs, including the two infected species, are likely to be the source of infections for Japanese eels, acting as intermediate hosts.

Keywords: Nematoda, parasitic nematode, taxonomy, morphology, intermediate hosts, littoral crabs

Received: September 22, 2014; Accepted: February 28, 2015; Published online: May 28, 2015


References

  1. Anderson R.C. 2000: Nematode Parasites of Vertebrates: Their Development and Transmission. CAB International, Wallingford, 650 pp.
  2. Asakura A. 2006: The story behind the discovery of Hemigrapsus takanoi Asakura & Watanabe, 2005, a cryptic species of crab, previously thought to be the common Japanese intertidal crab H. penicillatus (Decapoda: Brachyura: Grapsoidea). TAXA, Proc. Jpn. Soc. Syst. Zool. 21: 33-39. (In Japanese with English abstract.)
  3. Asakura A., Mingkid W., Yamasaki I., Watanabe S. 2008: Revalidation of Hemigrapsus takanoi Asakura & Watanabe, 2005: a rebuttal to "Sakai (2007): comments on an invalid nomial species, Hemigrapsus takanoi Asakura & Watanabe, 2005, a synonym of Hemigrapsus penicillatus (DeHaan, 1835) (Decapoda, Brachyura, Grapsidae)." Crustaceana 81: 1263-1273. Go to original source...
  4. Asakura A., Watanabe S. 2005: Hemigrapsus takanoi, new species, a sibling species of the common Japanese intertidal crab H. penicillatus (Decapoda: Brachyura: Grapsoidea). J. Crust. Biol. 25: 279-292. Go to original source...
  5. Chabaud A.G. 2009: Spirurida. In: R.C. Anderson, A.G. Chabaud and S. Willmott (Eds.), Keys to the Nematode Parasites of Vertebrates. Archival Volume. CABI, Wallingford, pp. 334-360.
  6. Chabaud A.G., Campana-Reuget Y. 1956: Le gentre Ortleppina Schulz 1927, parasite d'Apodes, et non de Serpents, est synonyme du genre Heliconema Travassos 1919. Ann. Parasitol. Hum. Comp. 31: 308-309. Go to PubMed...
  7. Crites J.L., Overstreet R.M. 1991: Heliconema brooksi n. sp. (Nematoda: Physalopteridae) from the ophichthid eel Ophichthus gomesi in the Gulf of Mexico. J. Parasitol. 77: 42-50. Go to original source... Go to PubMed...
  8. De N.C. 1988: Remarks on the validity of the species Notopteroides alatae Majumdar, 1965. Folia Parasitol. 35: 281-284. Go to PubMed...
  9. De N.C., Ghosh M., Majumdar G. 1978: Records of some little known nematodes from Indian fishes. Folia Parasitol. 25: 317-322.
  10. Kaifu K., Miyazaki S., Aoyama J., Kimura S., Tsukamoto K. 2013: Diet of Japanese eels Anguilla japonica in the Kojima Bay-Asahi River system, Japan. Environ. Biol. Fish 96: 439-446. Go to original source...
  11. Katahira H., Mizuno K., Nagasawa K. 2011: Host size- and habitat-dependent intensity of Heliconema longissimum (Nematoda: Physalopteridae) in the Japanese eel (Anguilla japonica). J. Parasitol. 97: 994-998. Go to original source... Go to PubMed...
  12. Li L., Liu Y.Y., Liu B.C., Zhang L.P. 2013: Morphological and molecular characterisation of Heliconema hainanensis sp. nov. (Spirurina: Physalopteridae) from congers in the South China Sea, with a key to the species of Heliconema. Mem. Inst. Oswaldo Cruz, Rio de Janeiro 108: 41-47. Go to original source... Go to PubMed...
  13. Mizuno K., Nagasawa K. 2010: Occurrence and habitats of the giant mottled eel Anguilla marmorata (Anguilliformes, Anguillidae) in rivers of Ehime Prefecture, Japan. Biogeography 12: 133-139.
  14. Moravec F. 1998: Nematodes of Freshwater Fishes of the Neotropical Region. Academia, Prague, 464 pp.
  15. Moravec F. 2007: Some aspects of the taxonomy and biology of adult spirurine nematodes parasitic in fishes: a review. Folia Parasitol. 54: 239-257. Go to original source... Go to PubMed...
  16. Moravec F. 2013: Parasitic Nematodes of Freshwater Fishes of Europe. Revised Second Edition. Academia, Prahue, 601 pp.
  17. Moravec F., Amin A. 1978: Some helminth parasites, excluding Monogenea, from fishes of Afghanistan. Acta. Sci. Nat. Brno 12: 1-45.
  18. Moravec F., Santos M.D., Brasil-Sato M. 2008: Redescription of Cystidicoloides fischeri based on specimens from piranhas in Brazil, and erection of a new genus (Nematoda: Cystidicolidae). J. Parasitol. 94: 889-897. Go to original source... Go to PubMed...
  19. Moravec F., Sheeba S., Kumar A.B. 2013a: Observations on nematodes from the Indonesian shortfin eel Anguilla bicolor bicolor McClelland in India, including a revalidation of Heliconema ahiri Karve, 1941 (Physalopteridae). Acta Parasitol. 58: 496-503. Go to original source... Go to PubMed...
  20. Moravec F., Taraschewski H., Anantaphruti M.T., Maipanich W., Leoprasert T. 2007: Heliconema longissimum (Ortlepp, 1923) (Nematoda: Physalopteridae) from Pisodonophis boro (Teleostei: Ophichthidae) in Thailand, with remarks on the taxonomy of the Proleptinae Schulz, 1927. Syst. Parasitol. 66: 73-80. Go to original source... Go to PubMed...
  21. Moravec F., Taraschewski H., Weyl O.L.F. 2013b: Redescription of Heliconema africanum (Linstow, 1899) n. comb. (Nematoda: Physalopteridae), a nematode parasite of freshwater eels (Anguilla spp.) in South Africa. Syst. Parasitol. 85: 263-269. Go to original source... Go to PubMed...
  22. Nagasawa K., Umino T., Mizuno K. 2007: A checklist of the parasites of eels (Anguilla spp.) (Anguilliformes: Anguillidae) in Japan (1915-2007). J. Grad. Sch. Biosp. Sci. 46: 91-121.
  23. Ogden C.G. 1969: A revision of the genus Heliconema Travassos, 1919, Physalopteridae (Nematoda). J. Nat. Hist. 3: 423-431. Go to original source...
  24. Ortlepp R.J. 1922: The nematode genus Physaloptera Rud. Proc. Zool. Soc. London 92: 999-1107. Go to original source... Go to PubMed...
  25. Sood M.L. 1970: On Paraleptus komiyai n. sp. (Physalopteridae Leiper, 1908: Nematoda) from a fresh water fish, Mastacembelus armatus from Lucknow, India. Jpn. J. Parasitol. 19: 437-439.
  26. Suyehiro Y. 1957: [On the ecology of parasites of Japanese eels]. In: Y. Suyehiro, Y. Oshima and Y. Hiyama (Eds.), Suisangaku Shusei. Tokyo University Press, Tokyo, pp. 415-418. (In Japanese.)
  27. Taraschewski H., Boomker J., Knopf K., Moravec F. 2005: Anguillicola papernai (Nematoda: Anguillicolidae) and other helminths parasitizing the African longfin eel Anguilla mossambica. Dis. Aquat. Org. 63: 185-195. Go to original source... Go to PubMed...
  28. WoRMS 2013: Decapoda. World Register of Marine Species, www.marinespecies.org/aphia.php?p=taxdetails&id=1130, 2/2014.
  29. Yamaguti S. 1935: Studies on the helminth fauna of Japan. Part 9. I. Nematodes of fishes. Jpn. J. Zool. 6: 337-386.
  30. Yamasaki I., Doi W., Mingkid W.M., Yokota M., Strüssmann C.A., Watanabe S. 2011: Molecular-based method to distinguish the sibling species Hemigrapsus penicillatus and Hemigrapsus takanoi (Decapoda: Brachyura: Varunidae). J. Crust. Biol. 31: 577-581. Go to original source...