RESEARCH WORKS

  • 2016
    • Watanabe, Y., S. Nishida, K. Zenke, KH. How, N. Itoh, T. Yoshinaga, Development of the macronucleus in Cryptocaryon irritans, a parasitic ciliate of marine teleosts, and its ingestion and digestion of host cells. Fish Pathology,51,(3), 112–120.
  • 2015
    • Yokoyama H, Itoh N, Ogawa K, Fish and Shellfish Diseases Caused by Marine Protists. In Marine Protists, Eds. Ohtsuka S, Suzaki T, Horiguchi T, Suzuki N, Not F, Springer Japan. pp. 533–549.
    • Growth status of Yesso scallop Patinopecten yessoensis farmed by ear-hanging method between the different water layers and estimation of carrying capacity for the farmed scallops in Ogatsu Bay (northeastern Japan) following the 2011 off the Pacific coast of Tohoku Earthquake.) Nippon Suisan Gakkaishi,in press
    • Carrasco N, Green T, Itoh N, Marteilia spp. parasites in bivalves: a revision of recent studies. J. Invertebr. Pathol., 131, 43–57.abstract
    • Nagasawa K, Osugi T, Suzuki I, Itoh N, Takahashi KG, Satake H, Osada M, Characterization of GnRH-like peptides from the nerve ganglia of Yesso scallop, Patinopecten yessoensis. Peptides, 71, 202–210.abstract
    • Tamaru C, Klinger-Bowen RC, Ogawa K, Iwaki T, Kurashima A, Itoh N, Prevalence and Species Identity of Trypanorhyncha in Cultured and Wild Amberjack, (Seriola spp.) in Hawaii; Implications for Aquaculture. J. World Aquacult. Soc., 47, 42–50. abstract
    • Shin, SP., K. Zenke, H. Yokoyama, Characterization of proteases isolated from Kudoa septempunctata. Korean Journal of Veterinary Research, 55, 175–179. PDF
    • Nagasawa, K., Treen. N, Kondo. R, Otoki. Y, Itoh. N, Rotchell. JM, Osada. M, Molecular characterization of an estrogen receptor and estrogen-related receptor and their autoregulatory capabilities in two Mytilus species. Gene, 564, 153–159. Abstract
    • Nagasawa, K., Ouchi. H, Itoh. N, Takahashi. K, Osada. M, In vivo administration of scallop GnRH-like peptide influences on gonad development in the Yesso scallop, Patinopecten yessoensis. Plos One, 10(6): e0129571. Abstract
    • Waki, T., T. Yoshinaga, Suppressive effects of low salinity and low temperature on in-vivo propagation of the protozoan Perkinsus olseni in Manila clam. Fish pathology, 50 (1), 16–22. Abstract
    • How, KH., K. Zenke, T. Yoshinaga, Dynamics and distribution properties of theronts of the parasitic ciliate Cryptocaryon irritans. Aquaculture, 438, 170–175. Abstract
    • Shin, SP., K. Zenke, H. Yokoyama, T. Yoshinaga, Factors affecting sporoplasm release in Kudoa septempunctata. Parasitology Research, 114, 795–799. Abstract
    • Suzuki J., R. Murata, H. Yokoyama, K. Sadamasu, A. Kai, Detection rate of diarrhoea-causing Kudoa hexapunctata in Pacific bluefin tuna Thunnus orientalis from Japanese waters. International Journal of Food Microbiology, 194, 1–6. Abstract
    • Yokoyama, H., K. Ogawa, The resurrection of Myxobolus toyamai with a validation of a stunted polar capsule based on morphological evidence. Parasitol. International, 64, 43–47. Abstract
    • Kallert, D., D. S. Grabner, H. Yokoyama, M. El-Matbouli, E. Eszterbauer, Transmission of myxozoans to vertebrate hosts, In “Myxozoan Evolution, Ecology and Development” (Okamura B. et al., Ed.), Springer,235–251.
  • 2014
    • Itoh, N., Yamamoto. T, Kang. HS, Choi. KS, Green. TJ, Carrasco. N, Awaji. M, Chow. S, A novel paramyxean parasite, Marteilia granula sp. nov (Cercozoa), from the digestive gland of Manila clam, Ruditapes philippinarum, in Japan. Fish Pathology, 49, 181-193. Abstract
    • Yokoyama, H., J. Suzuki, S. Shirakashi, Kudoa hexapunctata n. sp. (Myxozoa: Multivalvulida) from the somatic muscle of Pacific bluefin tuna Thunnus orientalis and re-description of K. neothunni in yellowfin tuna T. albacares. Parasitology International, 63, 571–579. Abstract
    • Yokoyama, H., N. Abe, J. Suzuki, First record of Unicapsula seriolae (Myxozoa: Multivalvulida) from the muscle of Malabar grouper Epinephelus malabaricus in Japan. Parasitology International, 63, 561–566. Abstract
    • Wada, S., O. Kurata, H. Hatakeyama, A. Yamashita, S. Takagi, T. Nishizawa, H. Yokoyama, A novel disorder of cultured juvenile greater amberjack Seriola dumerili characterized by renomegaly and splenomegaly. Fish Pathology, 49, 7–15. Absract
    • Takagishi, N., T. Yoshinaga, Information flow of infection with Ostreid herpesvirus 1 micro variant (OsHV-1 µVar), Nippon Suisan Gakkaishi, 80 (2), 214–221. Abstract
    • Shirakashi, S., K. Yamane K., H. Ishitani, T. Yanagida, H. Yokoyama, First report of Kudoa species in the somatic muscle of the Japanese parrotfish Calotomus japonicus (Scaridae) and a description of Kudoa igami, n. sp. (Myxozoa: Multivalvulida). >Parasitology Research, 113, 2515–2524. Abstract
    • China, M., H. Nakamura, K. Hamakawa, E. Tamaki, H. Yokoyama, S. Masuoka, K. Ogawa, Efficacy of high water temperature treatment of myxosporean emaciation disease caused by Enteromyxum leei (Myxozoa). Fish Pathology, 49(3), 137–140. Abstract
    • Shirakashi, S., T. Nishimura, N. Kameshima, H. Yamashita, H. Ishitani, K. Ishimaru, H. Yokoyama, Effectiveness of ultraviolet irradiation of seawater for the prevention of Kudoa yasunagai and Kudoa amamiensis (Myxozoa: Multivalvulida) infections in Seriola fish. Fish Pathology, 49 (3), 141–144. Abstract
    • Yokoyama, H., Nagasawa K. Synopsis of Japanese names of the parasites from cultured fishes and shellfishes in Japan. Biosphere Science, 53, 73–97. (In Japanese) PDF
  • 2013
    • Kikuchi, Y., T. Ohnishi, H. Furusawa, T. Kawai, Y. Fukuda, H. Yokoyama, Y. Sugita-Konishi, ELISA detection of Kudoa septempunctata in raw Paralichthys olivaceus (olive flounder) using a chicken anti-Kudoa antiserum. Biocontrol Science, 18, 193–197. Abstract
    • Yokoyama, H., Y. Miyazaki, T. Yoshinaga, Microsporidian encephalomyelitis in cultured yellowtail Seriola quinqueradiata. Fish Pathology, 48, 119–125. Abstract
    • China, M., H. Nakamura, K. Hamakawa, E. Tamaki, S. Miwa, F. Meng, H. Yokoyama, Occurrence of the Myxosporean Emaciation Disease Caused by Enteromyxum leei in Cultured Malabar Grouper Epinephelus malabaricus. Fish Pathology, 48, 88–96. Abstract
    • Quiazon, K. M. A., K. Zenke, T. Yoshinaga, Molecular characterization and comparison of four Anisakis allergens between Anisakis simplex sensu stricto and Anisakis pegreffii from Japan. Molecular & Biochemical Parasitology, 190, 23–26. Abstract
    • Waki, T., T. Yoshinaga, Experimental challenges of juvenile and adult Manila clams with the protozoan Perkinsus olseni at different temperatures. Fisheries Science, 79 (5), 779–786 Abstract
    • Umeda, K., J. Shimokawa, T. Yoshinaga, Effects of Temperature and Salinity on the in vitro Proliferation of Trophozoites and the Development of Zoosporangia in Perkinsus olseni and P. honshuensis, Both Infecting Manila clam. Fish Pathology, 48 (1),13–16. Abstract
    • Yokoyama, H. Parasitosis caused by ingestion of raw fish. Japanese Journal of Food Microbiology, 30(2), 100–103. (In Japanese) PDF
    • Yokoyama, H. Vector control of myxosporean diseases in fish. Japanese Journal of Veterinary Parasitology, 12(2), 87–94. (In Japanese)
  • 2012
    • Yokoyama, H., D. Grabner, S. Shirakashi, Transmission biology of the Myxozoa, In “Health and Environment in Aquaculture” (Carvalho, E., Ed.), InTech, Full Text
    • Grabner, D.S., H. Yokoyama, S. Shirakashi, R. Kinami, Diagnostic PCR assays to detect and differentiate Kudoa septempunctata, K. thyrsites and K. lateolabracis (Myxozoa, Multivalvulida) in muscle tissue of olive flounder (Paralichthys olivaceus). Aquaculture, 338–341, 36–40. Abstract
    • Harada, T., T. Kawai, H. Sato, H. Yokoyama, Y. Kumeda, Development of a quantitative polymerase chain reaction assay for detection of Kudoa septempunctata in olive flounder (Paralichthys olivaceus). Int. J. Food Microbiol., 156 (2), 161–167. Abstract
    • Yokoyama, H., T. Yanagida, S. Shirakashi, Kudoa ogawai n. sp. (Myxozoa: Multivalvulida) from the trunk muscle of Pacific barrelfish Hyperoglyphe japonica (Teleostei: Centrolophidae) in Japan. Parasitol. Res., 110 (6) 2247–2254. Abstract
    • Umeda, K., T. Yoshinaga, Development of real-time PCR assays for two Perkinsus spp. in the Manila clam Ruditapes philippinarum. Dis. Aquat. Org., 99 (3), 215–225. Abstract
    • Waki, T., J. Shimokawa, S. Watanabe, T. Yoshinaga, K. Ogawa, Experimental challenges of wild Manila clams with Perkinsus species isolated from naturally infected wild Manila clams. J. Invert. Pathol., 111 (1), 50–55. Abstract
    • Yokoyama, H., S. Urawa, D. Grabner, S. Shirakashi, Henneguya cartilaginis n. sp. (Myxozoa: Myxosporea) in the head cartilage of masu salmon Oncorhynchus masou masou. Parasitology International, 61, 594–598. Abstract
  • 2011
    • Yoshinaga, T., H. J. Im, S. Nishida, K. Ogawa, In vitro and in vivo efficacies of ionophores against Cryptocaryon irritans. Aquaculture, 321, 167–172. Abstract
    • Quiazon, K. M. A., T. Yoshinaga, K. Ogawa, Distribution of Anisakis species larvae from fishes of the Japanese waters. Parasitology International, 60 (2), 223–226. Abstract
    • Quiazon, K. M. A., T. Yoshinaga, K. Ogawa, Experimental challenge of Anisakis simplex sensu stricto and Anisakis pegreffii (Nematoda: Anisakidae) in rainbow trout and olive flounder, Parasitology International, 60 (2), 126–131. Abstract
    • Yoshinaga, T., Y. Kobayashi, M. Toba, Y. Miyama, Development of a sensitive method for the detection of young larvae of the parasitic Pycnogonid Nymphonella tapetis in Manila clam Ruditapes philippinarum, Fish Pathology, 46 (1), 38–41.Abstract
    • Yokoyama, H., F. Meng, M. Hirai, S. Takagi, T. Katagiri, M. Endo, K. Ogawa, Recently emerged myxosporean encephalomyelitis of cultured yellowtail Seriola quinqueradiata in Japan. J. Aquac. Res. Development, S2. PDF
    • Urawa, S., M. A. Freeman, S. C. Johnson, S. R. M. Jones, H. Yokoyama, Geographical variation in spore morphology, gene sequences, and host specificity of Myxobolus arcticus (Myxozoa) infecting salmonid nerve tissues. Dis. Aquat. Org., 96, 229–237. Abstract
    • Freeman, M.A., H. Yokoyama, A. Osada, T. Yoshida, A. Yamanobe, K. Ogawa, Spraguea (Microsporidia: Spraguidae) infections in the nervous system of the Japanese anglerfish, Lophius litulon (Jordan), with comments on transmission routes and host pathology. J. Fish Dis., 34 (6), 445–452. Abstract
    • Yokoyama, H., D. Ayado, J. Miyahara, K. Matsukura, I. Takami, F. Yokoyama, K. Ogawa, Infection dynamics of Microsporidium seriolae (Microspora) causing the beko disease of Seriola spp. Fish Pathol., 46 (2), 51–58. Abstract
    • Bartosova, P., M. A. Freeman, H. Yokoyama, M. Caffara, I. Fiala, Phylogenetic position of Sphaerospora testicularis and Latyspora scomberomori n. gen. n. sp. (Myxozoa) within the marine urinary clade. Parasitology, 138 (3), 381–393. Abstract
    • Meng, F., H. Yokoyama, S. Shirakashi, D. Grabner, K. Ogawa, K. Ishimaru, Y. Sawada, O. Murata, Kudoa prunusi n. sp. (Myxozoa: Multivalvulida) from the brain of Pacific bluefin tuna Thunnus orientalis (Temminck & Schlegel, 1844) cultured in Japan. Parasitol. Int., 60 (1), 90–96. Abstract
  • 2010
    • Quiazon, K. M. T., T. Yoshinaga, K. Ogawa, Taxonomical note on the redescription o f Philometroides seriolae (Ishii, 1931) infecting Japanese amberjack (Seriola quinqueradiata Temminck et Schlegel, 1845) in Japan. The Journal of Tropical Biology, 29–34.
    • Yoshinaga, T., S. Watanabe, T. Waki, S. Aoki, K. Ogawa, Influence of Perkinsus infection on the physiology and behavior of adult manila clam Ruditapes philippinarum. Fish Pathology, 45 (4), 151–157. Abstract
    • Shimokawa, J., T. Yoshinaga, K. Ogawa, Experimental evaluation of the pathogenicity of Perkinsus olseni in juvenile Manila clams Ruditapes philippinarum. Journal of Invertebrate Pathology, 105 (3), 347–351. Abstract
    • Yokoyama, H., T. Yanagida, M. A. Freeman, T. Katagiri, A. Hosokawa, M. Endo, M. Hirai, S. Takagi, Molecular diagnosis of Myxobolus spirosulcatus associated with encephalomyelitis of cultured yellowtail, Seriola quinqueradiata Temminck & Schlegel. J. Fish Dis., 33 (12), 939–946. Abstract
    • Zhang, J. Y., F. Meng, H. Yokoyama, J. Miyahara, I. Takami, K. Ogawa, Myxosporean and microsporidian infections in cultured Pacific bluefin tuna Thunnus orientalis in Japan, Fish. Sci., 76 (6), 981–990. Abstract
    • Zhang, J. Y., H. Yokoyama, J. G. Wang, A. H. Li, X. N. Gong, A. Ryu-Hasegawa, M. Iwashita, K. Ogawa, Utilization of tissue habitats by Myxobolus wulii Landsberg & Lom, 1991 in different carp hosts and disease resistance in allogynogenetic gibel carp: redescription of M. wulii from China and Japan. J. Fish Dis., 33 (1), 57–68. Abstract
  • 2009
    • Takahashi, M., T. Yoshinaga, T. Waki, J. Shimokawa, K. Ogawa, Development of a PCR-RFLP Method for Differentiation of Perkinsus olseni and P. honshuensis in the Manila Clam Ruditapes philippinarum. Fish Pathology, 44 (4), 185–188. Abstract
    • Quiazon, K. M. A., T. Yoshinaga, M. D. Santos, K. Ogawa, Identification of larval Anisakis spp. (Nematoda: Anisakidae) in Alaska pollock (Theragra chalcogramma) in northern Japan using morphological and molecular markers. Journal of Parasitology, 95 (5), 1227–1232. Abstract
    • Takagishi, N., T. Yoshinaga, K. Ogawa, Effect of hyposalinity on the infection and pathogenicity of Miamiensis avidus causing scuticociliatosis in olive flounder Paralichthys olivaceus. Diseases of Aquatic Organisms, 86 (2), 175–179. Abstract
    • Yoshinaga, T., N. Tsutsumi, K. A. Hall, K. Ogawa, Origin of the diclidophorid monogenean Neoheterobothrium hirame Ogawa, 1999, the causative agent of anemia in olive flounder Paralichthys olivaceus. Fisheries Science, 75 (5), 1167–1176. Abstract
    • Yokoyama, H., M. Kageyama, T. Yanagida, K. Ogawa, Seawater survival of Enteromyxum leei (Myxozoa) evaluated by in vitro viability and in vivo infectivity assays. Fish Pathol., 44 (4), 172–177. Abstract
    • Urawa, S., Y. Iida, M. A. Freeman, T. Yanagida, E. Karlsbakk, H. Yokoyama, Morphological and molecular comparisons of Myxobolus spp. in the nerve tissues of salmonid fishes with the description of Myxobolus murakamii n. sp., the causative agent of myxosporean sleeping disease. Fish Pathol., 44 (2), 72–80. Abstract
    • Kageyama, T., T. Yanagida, K. Ohara, H. Yokoyama, Henneguya pseudorhinogobii n. sp. (Myxozoa: Myxosporea) parasitizing the gills of the freshwater goby Rhinogobius sp. OR from the Nagara River and redescription of Henneguya rhinogobii. Fish. Sci., 75 (3), 657–663. Abstract
  • 2008
    • Quiazon, K. M. A., T. Yoshinaga, K. Ogawa, Philometra sawara sp n. and a redescription of Philometra sciaenae Yamaguti, 1941 and Philometra nemipteri Luo, 2001 (Nematoda: Philometridae): a morphological and molecular approach. Folia Parasitologica, 55 (4), 277–290. PDF
    • Quiazon, K. M. A., T. Yoshinaga, K. Ogawa, R. Yukami, Morphological differences between larvae and in vitro-cultured adults of Anisakis simplex (sensu stricto) and Anisakis pegreffii (Nematoda: Anisakidae) Parasitology International, 57 (4), 483–489. Abstract
    • Kay Lwin Tun, Y. Shimizu, H. Yamanoi, T. Yoshinaga, K. Ogawa, Seasonality in the infection and invasion of Marteilioides chungmuensis in the Pacific oyster Crassostrea gigas. Diseases of Aquatic Organisms, 80 (2), 157–165. Abstract
    • Kay Lwin Tun, N. Itoh, Y. Shimizu, H. Yamanoi, T. Yoshinaga, K. Ogawa, Pathogenicity of the protozoan parasite Marteilioides chungmuensis on the Pacific oyster, Crassostrea gigas. International Journal for Parasitology, 38 (2), 211–217. Abstract
    • Quiazon, K. M. A., T. Yoshinaga, K. Ogawa, Taxonomical study into two new species of Philometra (Nematoda: Philometridae) previously identified as Philometra lateolabracis (Yamaguti, 1935). Folia Parasitologica, 55 (1), 29–41. PDF
    • Freeman, M.A., H. Yokoyama, K. Ogawa, Description and phylogeny of Ceratomyxa anko sp. n. and Zschokkella lophii sp. n. from the Japanese anglerfish, Lophius litulon (Jordan). J. Fish Dis., 31 (12), 921–930. Abstract
    • Yokoyama, H., F. Yokoyama, J. Y. Zhang, K. Tsuruoka, K. Ogawa, Microsporidian infection in the trunk muscle of hatchery-bred juvenile spotted halibut Verasper variegates. Fish Pathol., 43 (4), 137–143. Abstract
    • Watanabe, Y., N. Shiina, F. Shinozaki, H. Yokoyama, J. Kominami, S. Nakamura-Tsuruta, J. Hirabayashi, K. Sugahara, H. Kamiya, H. Matsubara, T. Ogawa, K. Muramoto, Isolation and characterization of L-rhamnose-binding lectin, which binds to microsporidian Glugea plecoglossi, from ayu (Plecoglossus altivelis) eggs. Dev. Comp. Immunol., 32 (5), 487–499. Abstract
    • Yanagida, T., O. Palenzuela, T. Hirae, S. Tanaka, H. Yokoyama, K. Ogawa, Myxosporean emaciation disease of cultured red sea bream Pagrus major and spotted knifejaw Oplegnathus punctatus. Fish Pathol., 43 (1), 45–48. Abstract