Folia Parasitologica, vol. 60 (2013), issue 1

Folia Parasitologica 60[1] 61-74 (2013) | 10.14411/fp.2013.008

The genus Hatschekia (Copepoda: Hatschekiidae) from pufferfishes (Tetraodontiformes: Tetraodontidae) off the Ryukyu Islands, Japan, with descriptions of four new species and a redescription of H. pholas

Daisuke Uyeno, Kazuya Nagasawa
Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Japan

Four new species of the genus Hatschekia Poche, 1902 (Copepoda: Siphonostomatoida: Hatschekiidae) are described based on female specimens collected from pufferfishes (Tetraodontiformes: Tetraodontidae) caught in coastal waters off the Ryukyu Islands, Japan: H. longiabdominalis sp. n. on Arothron hispidus (Linnaeus), H. geniculata sp. n. on A. hispidus (type host) and A. stellatus (Bloch et Schneider), H. ellipsocorpa sp. n. on A. mappa (Lesson), and H. boonah sp. n. on A. nigropunctatus (Bloch et Schneider) (type host) and A. meleagris (Schneider). Hatschekia longiabdominalis sp. n. and H. boonah sp. n. differ from all other congeners by sharing an unusual, projected abdomen and a fusiform trunk with posterior lobes; these two species are differentiated from each other by the shape of the dorsal chitinous frame on the cephalothorax. Hatschekia geniculata sp. n. can be distinguished by the combination of the following morphological characters: a rhomboidal cephalothorax with a pair of lateral conical protrusions, a cylindrical trunk with posterior lobes and a bent abdomen with a dorsal protrusion. Hatschekia ellipsocorpa sp. n. resembles H. pholas (Wilson, 1906) but can be distinguished from the latter by the possession of one distal and one inner setae on the terminal endopodal segment of legs 1 and 2. Hatschekia pholas is also redescribed based on female specimens from the tetraodontid A. stellatus. At present, 44 nominal species of the genus have been reported from Japan, including four new species described in this paper; 38 of them have been described originally from Japan.

Keywords: parasitic copepods, gill parasites, Arothron spp., taxonomy, identification key

Received: March 16, 2010; Accepted: October 1, 2012; Published: February 14, 2013


References

  1. Boxshall G.A., Halsey S.H. 2004: An Introduction to Copepod Diversity. The Ray Society, London, 966 pp
  2. Castro R., Baeza H. 1986: Two new species of Hatschekia Poche, 1902 (Copepoda, Hatschekiidae) parasitic on two inshore fishes from Antofagasta, Chile. J. Nat. Hist. 20: 439-444 Go to original source...
  3. El -Rashidy H.H., Boxshall G.A. 2011: Two new species of parasitic copepods (Crustacea) on two immigrant fishes from the Red Sea of family Siganidae. Syst. Parasitol. 79: 175-193 Go to original source... Go to PubMed...
  4. Froese R., Pauly D. (E ds.) 2012: FishBase. World Wide Web electronic publication, www.fishbase.org, 8/2012
  5. Hayashi M. 2002: Balistidae. In: T. Nakabo (Ed.), Fishes of Japan with Pictorial Keys to the Species. English Edition. Tokai University Press, Tokyo, pp. 1396-1402
  6. Ho J.S., Kim I.H. 2001: New species of Hatschekia Poche, 1902 (Copepoda: Hatschekiidae) parasitic on marine fishes of Kuwait. Syst. Parasitol. 49: 73-79 Go to original source... Go to PubMed...
  7. Humes A.G., Gooding R.U. 1964: A method for studying the external anatomy of copepods. Crustaceana 6: 238-240 Go to original source... Go to PubMed...
  8. Huys R., Boxshall G.A. 1991: Copepod Evolution. The Ray Society, London, 468 pp
  9. Jones J.B. 1985: A revision of Hatschekia Poche, 1902 (Copepoda: Hatschekiidae), parasitic on marine fishes. N. Z. J. Zool. 12: 213-271 Go to original source...
  10. Jones J.B., Cabral P. 1990: New species of Hatschekia (Copepoda: Siphonostomatoida) from the gills of South Pacific fishes. J. R. Soc. N. Zeal. 20: 221-232 Go to original source...
  11. Kabata Z. 1979: Parasitic Copepoda of British Fishes. The Ray Society, London, 468 pp
  12. Kabata Z. 1991: Copepoda parasitic on Australian fishes, XIII: family Hatschekiidae. J. Nat. Hist. 25: 91-121 Go to original source...
  13. Nagasawa K., Uyeno D. 2013: A checklist of copepods of the families Dichelesthiidae, Hatschekiidae and Pseudohatschekiidae (Siphonostomatoida) from fishes in Japanese waters (19162012). Biosphere Sci.: in press
  14. Nelson J.S. 2006: Fishes of the World. Fourth Edition. John Wiley & Sons Inc., New York, 601 pp
  15. Nunes -Ruivo L.P. 1954: Parasites de poissons de mer ouest-Africains recoltes par M.J. Cadenat. III. Copepodes (2°note). Genres Prohatschekia n. gen. et Hatschekia Poche. Bull. Inst. Fr. d'Afrique Noire 16A: 479-505
  16. Pillai N.K. 1967: Copepods parasitic on Indian marine fishes. A review. In: Proceedings of the Symposium on Crustacea. Symposium Series, Mar. Biol. Assoc. India 2: 1556-1680
  17. Pillai N.K. 1968: Redescription of Caetrodes pholas C. B. Wilson and its transfer to Hatschekia Poche and the description of Hatschekia elliptica n. sp. Crustaceana, Supl. 1: 141-151
  18. Pillai N.K. 1985: The Fauna of India. Copepod Parasites of Marine Fishes. Zoological Society of India, Calcutta, 900 pp
  19. Uyeno D., Nagasawa K. 2009a: Redescription of four species of Hatschekia (Copepoda: Siphonostomatoida: Hatschekiidae) parasitic on tetraodontiform fishes from Japan. Zootaxa 2110: 1-21
  20. Uyeno D., Nagasawa K. 2009b: Three new species of Hatschekia Poche, 1902 (Copepoda: Siphonostomatoida: Hatschekiidae) parasitic on Abalistes filamentosus (Pisces: Tetraodontiformes: Balistidae) from off Okinawa, Japan. Syst. Parasitol. 74: 225- 237 Go to original source... Go to PubMed...
  21. Uyeno D., Nagasawa K. 2010a: Three new species of Hatschekia (Copepoda: Siphonostomatoida: Hatschekiidae) parasitic on boxfishes (Pisces: Tetraodontiformes: Aracanidae and Ostraciidae) from Japan. Syst. Parasitol. 75: 147-158 Go to original source... Go to PubMed...
  22. Uyeno D., Nagasawa K. 2010b: A new species of parasitic copepod of the genus Hatschekia Poche, 1902 (Siphonostomatoida: Hatschekiidae) from filefishes (Pisces: Tetraodontiformes: Monacanthidae) from off Okinawa, Japan. Syst. Parasitol. 75: 147-158 Go to original source... Go to PubMed...
  23. Uyeno D., Nagasawa K. 2010c: The copepod genus Hatschekia Poche, 1902 (Siphonostomatoida: Hatschekiidae) from triggerfishes (Pisces: Tetraodontiformes: Balistidae) from off the Ryukyu Islands, Japan, with descriptions of eleven new species. Zootaxa 2478: 1-40
  24. Uyeno D., Nagasawa K. 2012: Two new species of the copepod Hatschekia Poche, 1902 (Siphonostomatoida: Hatschekiidae) from angelfishes (Pisces: Perciformes: Pomacanthidae) collected during the KUMEJIMA 2009 Expedition. Zootaxa 3367: 49-59
  25. Villalba C. 1986: Contribution al conocimiento del genero Hatschekia Poche, 1902 en Chile (Copepoda: Hatschekiidae). Bol. Soc. Biol. Concepcion, Chile. 56: 155-170
  26. Wilson C.B. 1906: Report on some parasitic Copepoda collected by Professor Herdman, at Ceylon, in 1902. Rep. Gov. Ceylon. Pearl Oyster Fish. Gulf. Manaar 5: 189-210 + Plts. 1-5
  27. Yamaguti S. 1939: Parasitic copepods from fishes of Japan. Part 5. Caligoida, III. Vol. Jubilare Pro. Prof. Sadao Yoshida 2: 443- 487 + Plts. 14-33
  28. Yamaguti S. 1963: Parasitic Copepoda and Branchiura of Fishes. John Wiley & Sons Inc., New York, 1104 pp