Abstract
Eleven new species of the genus Hatschekia Poche, 1902 (Copepoda: Siphonostomatoida: Hatschekiidae) are described based on female specimens from triggerfishes (Tetraodontiformes: Balistidae) caught in coastal waters of the Ryukyu Islands, Japan. These include Hatschekia hemicyclium n. sp. on Rhinecanthus rectangulus (Bloch & Schneider), R. aculeatus (L.) and R. verrucosus (L.); H. jonesi n. sp. on Sufflamen bursa (Bloch & Schneider) and S. fraenatum (Latreille); H. kabatai n. sp. and H. izenaensis n. sp. on Xanthichthys lineopunctatus (Hollard); H. churaumi n. sp. on Pseudobalistes flavimarginatus (Rüppell); H. zanpa n. sp. and H. fukurubi n. sp. on Balistapus undulatus (Park); H. mongarah n. sp. on Balistoides conspicillum (Bloch & Schneider); H. nakamurai n. sp. on Melichthys vidua (Richardson); H. mihkagan n. sp. on Odonus niger (Rüppell); and H. pseudobalistesi n. sp. on Pseudobalistes fuscus (Bloch & Schneider). Ten of the 11 new species, with the exception of H. fukurubi n. sp., share the intercoxal sclerites of legs 1 and 2 armed with 4 processes. This character differs from 87 of the known 97 species in Hatschekia. Of the 20 species with this character, the 10 new species are separated from each other mainly by the following morphological characters: the number of setal elements in the leg armature, on the antennule and the caudal ramus, the presence of posterior lobes on the trunk, the segmentation and form of the abdomen, and the length ratios of certain body parts.References
Alfaro, M.E., Santini, F. & Brock, C.D. (2007) Do reefs drive diversification in marine teleosts? Evidence from the pufferfishes and their allies (order Tetraodontiformes). Evolution, 61, 2104–2126.
Boxshall, G.A. & Halsey, S.H. (2004) An Introduction to Copepod Diversity. The Ray Society, London, 966 pp.
Castro, R. & Baeza, H. (1986) Two new species of Hatschekia Poche, 1902 (Copepoda, Hatschekiidae) parasitic on two inshore fishes from Antofagasta, Chile. Journal of Natural History, 20, 439–444.
Froese, R. & Pauly, D. (Eds.) (2010) FishBase. World Wide Web electronic publication. Available from http://www.fishbase.org/ (accessed 15 March 2010).
Hayashi, M. (2002a) Balistidae. In: Nakabo T. (Ed.), Fishes of Japan with Pictorial Keys to the Species, English Edition. Tokai University Press, Tokyo, pp. 1396–1402.
Hewitt, G.C. (1969) Two new species of Hatschekia (Copepoda, Dichelesthiidae) from New Zealand waters. New Zealand Journal of Marine and Freshwater Research, 3, 159–168.
Ho, J.-S. & Dojiri, M. (1978) A new species of Hatschekia (Copepoda: Dichelesthiidae) parasitic on leopard coral trout in the Great Barrier Reef, Australia. Journal of Parasitology, 64, 727–730.
Ho, J.-S. & Kim, I.-H. (2001) New species of Hatschekia Poche, 1902 (Copepoda: Hatschekiidae) parasitic on marine fishes of Kuwait. Systematic Parasitology, 49, 73–79.
Holcroft, N.I. (2005) A molecular analysis of the interrelationships of tetraodontiform fishes (Acanthomorpha: Tetraodontiformes). Molecular Phylogenetics and Evolution, 34, 525–544.
Humes, A.G. & Gooding, R.U. (1964) A method for studying the external anatomy of copepods. Crustaceana, 6, 238–240.
Huys, R. & Boxshall, G.A. (1991) Copepod Evolution. The Ray Society, London, 468 pp.
Jones, J.B. (1985) A revision of Hatschekia Poche, 1902 (Copepoda: Hatschekiidae), parasitic on marine fishes. New Zealand Journal of Zoology,12, 213–271.
Jones, J.B. & Cabral, P. (1990) New species of Hatschekia (Copepoda: Siphonostomatoida) from the gills of South Pacific fishes. Journal of the Royal Society of New Zealand, 20, 221–232.
Kabata, Z. (1979) Parasitic Copepoda of British Fishes. The Ray Society, London, 468 pp.
Kabata, Z. (1991) Copepoda parasitic on Australian fishes, XIII: family Hatschekiidae. Journal of Natural History, 25, 91–121.
Klassen, G.J. (1995) Phylogeny and biogeography of the Ostraciinae (Tetraodontiformes: Ostraciidae). Bulletin of Marine Science, 1995, 57, 393–411.
Nelson, J.S. (2006) Fishes of the World. Fourth Edition. John Wiley & Sons Inc., New York, 601 pp.
Nuñes-Ruivo, L.P. (1954) Parasites de poissons de mer ouest–Africains récoltés par M.J. Cadenat. III. Copépodes (2°note). Genres Prohatschekia n. gen. et Hatschekia Poche. Bulletin de l’ Institute francais d’Afrique Noire, 16A, 479–505.
Pillai, N.K. (1985) The Fauna of India. Copepod Parasites of Marine Fishes. Zoological Survey of India, Calcutta, 900 pp.
Santini, F. & Tyler, J.C. (2003) A phylogeny of the families of fossil and extant tetraodontiform fishes (Acanthomorpha, Tetraodontiformes), Upper Cretaceous to recent. Zoological Journal of the Linnean Society, 139, 565–617.
Scott-Holland, T.B., Bennet, S.M. & Bennet, M.B. (2006) Distribution of an asymmetrical copepod, Hatschekia plectropomi, on the gills of Plectropomus leopardus. Journal of Fish Biology, 68, 222–235.
Shiino, S.M. (1957a) Copepods parasitic on Japanese fishes. 15. Eudactylinidae and Dichelesthiidae. Reports of the Faculty of Fisheries, Prefectural University of Mie, 2, 392–410.
Shiino, S.M. (1957b) On a new species of Hatschekia (Crustacea Copepoda) from Halichoeres poecilopterus (T. & S.). Journal of the Faculty of Science, Hokkaido University, Series 6, Zoology, 13, 105–108.
Tyler, J.C. & Sorbini, L. (1996) New superfamily and three new families of tetraodontiform fishes from the Upper Cretaceous: the earliest and most morphologically primitive plectognaths. Smithsonian Contributions to Paleobiology, 82, 1–59.
Uyeno, D. & Nagasawa, K. (2009a) Redescription of four species of Hatschekia (Copepoda: Siphonostomatoida: Hatschekiidae) parasitic on tetraodontiform fishes from Japan. Zootaxa, 2110, 1–21.
Uyeno, D. & Nagasawa, K. (2009b) Three new species of Hatschekia (Copepoda: Siphonostomatoida: Hatschekiidae) parasitic on Abalistes filamentosus (Pisces: Tetraodontiformes: Balistidae) from Okinawa, Japan. Systematic Parasitology, 74, 225–237.
Uyeno, D. & Nagasawa, K. (2010a) Three new species of Hatschekia (Copepoda: Siphonostomatoida: Hatschekiidae) parasitic on boxfishes (Pisces: Tetraodontiformes: Aracanidae and Ostraciidae) from Japan. Systematic Parasitology, 75, 147–158.
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. Systematic Parasitology, 76, 53–58.
Villalba, C. (1986) Contribution al conocimiento del genero Hatschekia Poche, 1902 en Chile (Copepoda: Hatschekiidae). Boletin de la Sociedad de Biologia de Concepcion, Chile, 56, 155–170.
Winterbottom, R. (1974) The familial phylogeny of the Tetraodontiformes (Acanthopterygii: Pisces) as evidenced by their comparative myology. Smithsonian Contributions to Zoology, 155, 1–201.
Winterbottom, R. & Tyler, J.C. (1983) Phylogenetic relationships of aracanin genera of boxfishes (Ostraciidae: Tetraodontiformes). Copeia, 4, 902–917.
Yamaguti, S. (1939) Parasitic copepods from fishes of Japan. Part 5. Caligoida, III. Volume Jubilare pro Professore Sadao Yoshida, 2, 443–487, pls. 14–33.
Yamaguti, S. (1953) Parasitic copepods from fishes of Japan. Part 7. Cyclopoida, III and Caligoida, IV. Publications of the Seto Marine Biological Laboratory, 3, 221–231, pls. 13–17.
Yamaguti, S. (1954) Parasitic copepods from fishes of Celebes and Borneo. Publications of the Seto Marine Biological Laboratory, 3, 375–398.
Yamaguti, S. (1963) Parasitic Copepoda and Branchiura of Fishes. John Wiley & Sons Inc., New York, 1104 pp.
Yamaguti, S. & Yamasu, T. (1959) Parasitic copepods from fishes of Japan with description of 26 new species and remarks on two known species. Biological Journal of Okayama University, 5, 89–165.
Yamanoue, Y., Miya, M., Matsuura, K., Katoh, M., Sakai, H. & Nishida, M. (2008) A new perspective on phylogeny and evolution of tetraodontiform fishes (Pisces: Acanthopterygii) based on whole mitochondrial genome sequences: Basal ecological diversification?. BMC Evolutionary Biology, 8, 212.