Kyushu University Academic Staff Educational and Research Activities Database
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Yohei Shimasaki Last modified date:2018.06.13

Associate Professor / Animal and Marine Bioresource Sciences
Department of Bioresource Sciences
Faculty of Agriculture

Graduate School
Undergraduate School

Academic Degree
Agricultural science
Country of degree conferring institution (Overseas)
Field of Specialization
Biology of harmful algae, Environmental Toxicology
Total Priod of education and research career in the foreign country
Outline Activities
Research : Investigating the mechanism of senescence and tolerance against various environmental change in red tide algae by proteomic analysis, and cause of mass mortality with reddish-brown discoloration of soft body in cultured pearl oyster.
Education : Providing education about biology and fisheries science about harmful red tide.
Social activities : Sending information about our study through the web.
Research Interests
  • Function analysis of activated oxygen scavenging enzymes in harmful algal blooming species, Chattonella antiqua and marina
    keyword : Chattonella, activated oxygen scavenging enzymes
  • Viability of harmful algae and its physiological response to environmental factors
    keyword : red tide species, strong light
  • Toxic mechanisms of agrochemical to monocellular alga
    keyword : diatom, green algae, agrochemical, evaluation of toxic effect, toxic mechanism
  • Molecular analysis of causal mechanisms of mass mortality in pearl oyster
    keyword : pearl oyster, mass mortality, proteomics
  • Searching biomarkers about wax and wane of harmful algae, and analyzing its molecular mechanisms.
    keyword : red tide, phytoplankton, proteomics
  • Function analysis of tributyltin-binding protein in fish
    keyword : marine pollution, tributyltin, fsh, blood
Academic Activities
1. S Miki , K Ikeda, Y Oba, H Satone, M Honda, Y Shimasaki, N Onikura, O Arakawa, Y Oshima., Tributyltin in blood of marine fish collected from a coastal area of northern Kyushu, Japan., Mar Poll Bull, 62, 2533-2536, 2011.11.
2. ◦Qiu X, Yamasaki Y, Shimasaki Y, Gunjikake H, Honda H, Kawaguchi M, Matsubara T, Nagasoe S, Etoh T, Matsui S, Honjo T, Oshima Y., Allelopathy of the raphidophyte Heterosigma akashiwo against the dinoflagellate Akashiwo sanguinea is mediated via allelochemicals and cell contact , Marine Ecology-Progress Series, 446, 107-118, 2012.01.
3. Yamasaki Y, Ohmichi Y, Hirose M, Shikata T, Shimasaki Y, Oshima Y, Honjo T., LOW MOLECULAR WEIGHT ALLELOCHEMICALS PRODUCED BY THE DIATOM, Skeletonema costatum, Thalassas , 28, 9-17, 2012.01.
4. Hano T, Oshima Y, Kinoshia M, Tanaka M, Mishima N, Wakamatsu Y, Ozato K, Shi-masaki Y, Honjo T., Evaluation of the effects of ethinylestradiol (EE2) on sexual differentiation in the olvas-GFP/STII-YI medaka (transgenic Oryzias latipes) strain as estimated by proliferative activity of germ cells. , Aquat Toxicol , 104, 177-184, 2011.08.
5. Satone H, Lee JM, Oba Y, Kusakabe T, Akahoshi E, Miki S, Suzuki N, Sasayama Y, Nassef M, Shimasaki Y, Kawabata S, Honjo T, Oshima Y, Tributyltin-binding protein type 1, a lipocalin, prevents inhibition of osteoblastic activity by tributyltin in fish scales , Aquat Toxicol , 103, 79-84, 2011.05.
6. Nakayama K, Sei N,. Handoh I, Shimasaki Y, Honjo T, Oshima Y. , Effects of polychlorinated biphenyls on liver function and sexual characteristics in Japanese medaka (Oryzias latipes). , Mar Poll Bull , 63, 366-369 , 2011.04.
7. Yamasaki Y, Nagasoe S, Tameishi M, Shikata T, Zou Y, Jiang Z, Matsubara T, Shimasaki, Yamaguchi K, Oshima Y, Oda T, Honjo T, The role of interactions between Prorocentrum minimum and Heterosigma akashiwo in bloom formation, HYDROBIOLOGIA , 641, 33-44, 2010.09.
8. Hano T, Oshima Y, Kinoshita M, Tanaka M, Wakamatsu Y, Ozato K, Nassef M, Shimasaki Y, Honjo T , In ovo nanoinjection of nonylphenol affects embryonic development of a transgenic see-through medaka (Oryzias latipes), olvas-GFP/STII-YI strain, CHEMOSPHERE, 77: 1594-1599, 2009.12.
9. Nassef M, Matsumoto S, Seki M, Kang IJ, Moroishi J, Shimasaki Y, Oshima Y , Pharmaceuticals and Personal Care Products Toxicity to Japanese Medaka Fish (Oryzias latipes) , JOURNAL OF THE FACULTY OF AGRICULTURE KYUSHU UNIVERSITY, 54: 407-411, 2009.10.
10. Moroishi J, Kang IJ, Nagafuchi K, Honjo T, Shimasaki Y, Oshima Y , Biological Monitoring to Detect Both Water Pollution and Water Quality Recovery Based on Valve Movements of Freshwater Bivalves (Corbicula japonica) , JOURNAL OF THE FACULTY OF AGRICULTURE KYUSHU UNIVERSITY, 54: 413-420, 2009.10.
11. Yamasaki Y, Shikata T, Nukata A, Ichiki S, Nagasoe S, Matsubara T, Shimasaki Y, Nakao M, Yamaguchi K, Oshima Y, Oda T, Ito M, Jenkinson IR, Asakawa M, Honjo T , Extracellular polysaccharide-protein complexes of a harmful alga mediate the allelopathic control it exerts within the phytoplankton community, ISME JOURNAL, 3: 808-817, 2009.07.
12. Basti L, Nagai K, Shimasaki Y, Oshima Y, Honjo T, Segawa S, Effects of the toxic dinoflagellate Heterocapsa circularisquama on the valve movement behaviour of the Manila clam Ruditapes philippinarum, AQUACULTURE , 291: 41-47, 2009.06.
13. Shikata T, Nukata A, Yoshikawa S, Matsubara T, Yamasaki Y, Shimasaki Y, Oshima Y, Honjo T., Effects of light quality on initiation and development of meroplanktonic diatom blooms in a eutrophic shallow sea., Marine Biology, 156: 875-889, 2009.04.
14. Tameishi M, Yamasaki Y, Nagasoe S, Shimasakia Y, Oshima Y, Honjo T., Allelopathic effects of the dinophyte Prorocentrum minimumon the growth of the bacillariophyte Skeletonema costatum., Harmful Algae, 8: 421-429., 2009.02.
15. Satone H, Oshima Y, Shimasaki Y, Tawaratsumita T, Oba Y, Takahashi E, Kitano T, Kawabata S, Kakuta Y, Honjo T., Tributyltin-binding protein type 1 has a distinctive lipocalin-like structure and is involved in the excretion of tributyltin in Japanese flounder, Paralichthys olivaceus., Aquatic Toxicology, 90: 292-299. , 2008.12.
16. Shikata T, Yoshikawa S, Matsubara T, Tanoue W, Yamasaki Y, Shimasaki Y, Matsuyama Y, Oshima Y, Jenkinson IR, Honjo T., Growth dyanmics of Heterosigma akashiwo (Raphidophyceae) in Hakata Bay, Japan., European Journal of Phycology, 43: 395-411., 2008.11.
17. Shikata T, Nagasoe S, Matsubara T, Yoshikawa S, Yamasaki Y, Shimasaki Y, Oshima Y, Jenkinson IR, Honjo T., Factors influencing the initiation of blooms of the raphidophyte Heterosigma akashiwo and the diatom Skeletonema costatum in a port in Japan., Limnology and Oceanography, 53: 2503-2518., 2008.11.
18. Nakayama K, Sei N, Oshima Y, Tashiro K, Shimasaki Y, Honjo T., Alteration of gene expression profiles in the brain of Japanese medaka (Oryzias latipes) exposed to KC-400 or PCB126., Marine Pollution Bulletin, 57: 460-466., 2008.03.
19. Shimasaki Y, Oshima Y, Inoue Y, Shibata H, Nakayama K, Inoue S, Imoto H, Kang IJ and Honjo T, Distribution of tributyltin in tissues of mature Japanese whiting, Sillago japonica and their eggs, J. Fac. Agr. Kyshu Univ, 53:67-72 , 2008.02.
20. Shikata T, Nagasoe S, S. J.Oh, Matsubara T, Yamasaki Y, Shimasaki Y, Oshima Y, Honjo T, Effects of down- and up-shocks from rapid changes of salinity on survival and growith of estuarine phytoplankters. , J. Fac. Agr. Kyushu Univ, 53, 81-87., 2008.02.
21. T. Shikata, S. Nagasoe, T. Matsubara, Y. Yamasaki, Y. Shimasaki, Y. Oshima, T. Uchida, I. R. Jenkinson, T. Honjo. , Encystment and Excystment of Gyrodinium instriatum Freudenthal et Lee., Journal of Oceanography , 64: 355-365, 2008.01.
22. Hano T, Oshima Y, Kim SG, Satonne H, Ooba Y, Kitano T, Inoue S, Shimasaki Y, Honjo T., Tributlyltin causes abnormal development in embryo of medaka, Oryzias latipes., Chemosphere, 69: 927-933., 2007.10.
23. T. Shikata, S. Nagasoe, T. Matsubara, Y. Yamasaki, Y. Shimasaki, Y. Ohshima and T. Honjo , Effects of temperature and light on cyst germination and germinated cell survival of the noxious raphidophyte Heterosigma akashiwo, Harmful Algae , 6 : 700-706, 2007.07.
24. Yasmasaki Y., Nagasoe S., Matsubara T., Shikata T., Shimasaki Y., Oshima Y. and Honjo T., Allelopathic interactions between the bacillariophyte Skeletonema costatum (Greville) Cleve and the raphidophyte Heterosigma akashiwo (Hada) Hada ex Hara et Chihara., Marine Ecology Progress Series , 339: 83-92, 2007.07.
25. Y. Yamasaki, S. Nagasoe, T. Matsubara, T. Shikata, Y. Shimasaki, Y. Oshima and T. Honjo. , Growth inhibition and formation of morphologically abnormal cells of Akashiwo sanguinea (Hirasaka) G. Hansen et Moestrup by cell contact with Cochlodinium polykrikoides Margalef., Marine Biology , 152: 157-163, 2007.07.
26. T. Matsubara, S. Nagasoe, Y. Yamasaki, T. Shikata, Y. Shimasaki, Y. Oshima and T. Honjo., Effects of temperature, salinity, and irradiance on the growth of the dinoflagellate Akashiwo sanguinea., Journal of Experimental Marine Biology and Ecology , 342: 226-230, 2007.04.
27. S. J. Oh, Y. H. Yoon, D.I. Kim, Y. Shimasaki, Y. Oshima and T. Honjo, Effects of light quantity and quality on the growth of the harmful dinoflagellate, Cochlodinium polykrikoides Margalef (Dinophyceae)., Algae , 21: 311-316, 2006.08.
Educational Activities
Practical work of environmental science

Class of planktology