The Nagasawa Research Group for Aquaparasitology
　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　Laboratory of Aquaculture
　　　　　　　　　 　　Graduate School of Biosphere Science
　　　　　　　　　　　　　　　　　Hiroshima University
　
　1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan
　　　 　　　

　Bird's-eye view of part of the main campus of Hiroshima University　　University logo
　

1. Staff and Profile 　Professor Kazuya Nagasawa, Ph.D. 　　E-mail : ornatus(at)hiroshima-u.ac.jp 　　　Kazuya Nagasawa is a fish parasitologist and fisheries biologist. 　　　His academic background in Fisheries Science includes a PhD degree (fish parasitology, 1981) and a Master's degree (fish parasitology, 1978) from the University of Tokyo. He earned his Bacheror of Fisheries Science (aquaculture, 1975) at the Tokyo University of Fisheries (currently Tokyo University of Marine Science and Technology).
Dr. Nagasawa joined Hiroshima University in September 2005. He formerly worked at the Hokkaido Prefectural Fisheries Experimental Station (1981-1991), National Research Institute for Far Seas Fisheries (1991-2001), National Research Institute for Aquaculture (2001-2003) and National Tohoku Fisheries Research Institute (April to August in 2005). For two years from March 2003 to March 2005, he served as Special Adviser at the Aquaculture Department of the Southeast Asian Fisheries Development Center (SEAFDEC-AQD) in the Philippines for an international project on fish diseases in Southeast Asia. 　　　 　　　As of October 2011, Professor Nagasawa authored and co-authored 27 books (six as an editor, two as a single author, 19 as a chapter contributor) related to fish parasites and also fisheries biology in both Japanese and English publications. He also has over 210 original papers (of which, 167 papers were published in peer-reviewed journals), 53 review articles (22 in peer-reviewed journals) and 97 scientific essays. 　　　 　　　Dr. Nagasawa has served in the editorial board for Journal of Marine Biological Association of the United Kingdom (1992-present). Likewise, he served as Editor-in-Chief for International Ichthyoparasitological Newsletter (1992-1996) and as an editorial member for Folia Parasitologica (1992-1996), Fish Pathology (1993-2004), Bulletin of Japanese Society of Fisheries Oceanography (1999-2002), and Fisheries Science (2005-2008). 　　　 　　　In addition to parasitology, Dr. Nagasawa worked on fish ecology and fisheries oceanography. He received the R.E. Foerster Award in Canada in 1998 with his work with a Canadian scientist on the impact of global warming on the production of Pacific salmon. He was also awarded in 2001 by the Japanese Association of Fisheries Journalists with his work on the ocean ecology of Pacific salmon. 　　　 　　　Dr. Nagasawa's expertise on fish parasites and others has led to several invitations as a lecturer at the Ocean Research Institute of Kiel University, Kiel, Germany (1989); the School of Marine Science, Tokai University, Shizuoka, Japan (1992-1996); the Faculty of Science, Nara Women's University, Nara, Japan (1995); and the Faculty of Science, Hokkaido University, Sapporo, Japan (2009). 　　　He also stayed as a visiting scientist at the Natural History Museum, London, U.K.; Institute of Parasitology, Academy of Sciences of the Czech Republic, Ceske Budejovice, Czech Republic; Institute of Biological Sciences, University of Malaya, Kuala Lumpul, Malaysia; Institute of Fisheries and Oceanography, Kamchatka, Russia; Pacific Biological Station, Nanaimo, B.C., Canada; and Fisheries Research Institute, University of Washington, Seattle, U.S.A.

Four seasons (spring, summer, fall, and winter) in the campus of Hiroshima University

2. Postdoctoral Fellows and Their Research - 2 persons

1. Dr. Ione Madinabeitia 　　　　 　　　Ione Madinabeitia finished her PhD work in March 2011 at Hiroshima University. Her PhD dissertation is "Taxonomical and ecological studies on the metazoan parasites of sparid fishes from Japan and other countries." Her PhD mentor was Professor Kazuya Nagasawa. 　　　　Ione is a Spanish. After she finished her undergraduate program at the California State University, Long Beach (CSULB), in California, U.S.A., she came to Japan as a Master's student. At CSULB, she was a student of Professor Ju-shey Ho (left in the right picture below), a prominent scientist for research on the symbiotic copepods of aquatic animals. 　　　　Ione is a postdoctoral fellow supported by the Japan Society for the Promotion of Science. She has started publishing papers on the basis of her PhD dissertation. Her current publications are listed below: ・Ho, J.-S., B. B. Collette, and I. Madinabeitia (2006): Host specificity of Lepeophtheirus crassus (Wilson and Bere) (Copepoda: Caligidae) parasitic on the marlin sucker Remora osteochir (Cuvier) in the Atlantic Ocean. J. Parasitol., 92: 1113-1115. ・Madinabeitia, I., T. Nakai, S. Ohtsuka, J. Okuda, E. Iwamoto, T. Yoshida, M. Furukawa, and N. Nakaoka (2009): Homogeneity among Lactococcus garvieae isolates from striped jack Pseudocaranx dentex (Bloch & Schneider) and its ectoparasites. J. Fish Dis., 32: 901-905. ・Moravec, F., K. Nagasawa, and I. Madinabeitia (2010): A new species of Capillaria (Nematoda: Capillaridae) from the intestine of the marine fish Acanthopagrus schlegelii schlegelii (Sparidae) from Japan. J. Parasitol., 96: 771-774. ・Madinabeitia, I. and K. Nagasawa (2011): Chalimus stages of Caligus latigenitalis (Copepoda: Caligidae) parasitic on blackhead seabream from Japanese waters, with discussion of terminology used for developmental stages of caligids. J. Parasitol., 97: 221-236. ・Madinabeitia, I. and K. Nagasawa (2011): Description of Naobranchia denticis n. sp. (Copepoda: Siphonostomatoida: Lernaeopodidae) parasitic on Dentex hypselosomus (Teleostei: Sparidae) from Japanese waters, with a key to the species of Naobranchia. Crustaceana, 84: 461-476. 2. Dr. Yuzo Ota 　　　　 　　　Yuzo Ota joined the Nagasawa Research Group for Aquaparasitology in April 2011. He obtained a PhD degree at the University of Ryukyus in Okinawa, Japan, in 2010. He wrote his PhD dissetation entitled "Taxonomical studies on gnathiids (Crustacea, Isopoda, Gnathiidae) from Okinawa Islands, Japan." The animals Yuzo has studied are gnathiid isopods. He has published some papers (listed below) on the taxonomy and ecology of these isopods collected in Okinawan waters. One of the papers (Ota et al., 2008) was awarded by the Japanese Society of Crustacean Research in 2009. 　　　Yuzo is a postdoctoral fellow supported by the Japan Society for the Promotion of Science. He is also interested in subtropical insects and has some papers, too. ・Ota, Y., K. Tanaka, and E. Hirose (2007): A new species of Gnathia (Crustacea: Isopoda: Gnathiidae) from Okinawa-jima Island, Ryukyu Archipelago, southwestern Japan. Zool. Sci., 24: 1266-1277. ・Ota, Y., K. Tanaka, and E. Hirose (2008): Seasonal fluctuations of the sponge-dwelling gnathiid isopod Elaphognathia aff. cornigera. Crust. Res., 37: 14-25. ・Yamauchi, T., Y. Ota, and K. Nagasawa (2008): Stibarobdella macrothela (Annelida: Hirudinida: Piscicolidae) from chondracanians in Japanese waters, with new hosts records. Biogeography, 10: 53-57. ・Ota, Y. and E. Hirose (2009): Description of Gnathia maculosa and a new record of Gnathia trimaculata (Crustacea, Isopoda, Gnathiidae), ectoparasites of elasmobranchs from Okinawan coastal waters. Zootaxa, 2114: 50-60. ・Ota, Y. and E. Hirose (2009): Gnathia nubila n. sp. and a new record of Gnathia grandilaris (Crustacea, Isopoda, Gnathiidae) that parasitize elasmobranchs from Okinawan coastal waters, Japan. Zootaxa, 2238: 43-55. ・Ota, Y., K. Tanaka, M. Hirose, and E. Hirose (2010): Description of a new species of Elaphognathia (Isopoda: Gnathiidae) from Japan based on morphological and molecular traits. J. Crust. Biol., 30: 710-720. ・Ota, Y. (2010): Seasonal fluctuations of the sponge-dwelling gnathid, Elaphognathia nunomurai (Isopoda; Gnathiidae). Cancer, 19: 1-9. (In Japanese). ・Ota, Y. (2010): A record of the Fraser's dolphin Lagenodelphis hosei Fraser, 1956 (Odontoceti: Delphinidae) from a stomach of the tiger shark Galeocerdo cuvier (Peron and LeSueur, in LeSueur, 1822). Biol. Mag. Okinawa, 48: 95-99. (In Japanese with English abstract). ・Ota, Y. (2011): A new species of the gnathiid isopod, Gnathia teruyukiae (Crustacea: Malacostraca), from Japan, parasitizing elasmobranch fish. Bull. Natl. Mus. Nat. Sci., Ser. A, Suppl., 5: 41-51. ・Ota, Y. (2011): Gnathiidae from Kumejima Island in the Ryukyu Archipelago, southwestern Japan, with description of three new species (Crustacea: Isopoda). Zootaxa, special issue (in press). 　　　　　　 　 　　red seabream 　　　　　　　　 　　　　 　　　　　sampling of Japanese eels

K. Mizuno	K. Kimoto	K. Sakaoka	H. Katahira

W. Maneepitaksanti	K. Yamamoto

M. Nitta