Biological Laboratory, Faculty of Education,
Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
Last update: 12 December 2013
Birth Date: 24 December 1979
Place of Birth: Fukuoka, Japan
1995-1998: Musashidai High School (Fukuoka pref.)
1998-2002: Bachelor of Science (Agriculture), Tamagawa University, Department of Agriculture
2002-2004: Master of Agriculture, Ehime University, Graduate School of Agricultural Science
2004-2007: PhD canditate, Okayama University, Graduate School of Natural Science and Technology
2007-2008: Post-doctoral Researcher, Okayama University, Graduate School of Environmantal Science
2008-2010: Post-doctoral Research Fellow, Nagasaki University, Institute
of Tropical Medicine
2010-2012 : Research Fellow of the Japan Society for the Promotion of Science (JSPS Research Fellow) at Kyoto University
2012- : Associate Professor, Nagasaki University, Faculty of Education
1) Evaluation of predatory ability in diving beetles as mosquito predator
2) Mosquito and natural enemy in rice fields in Vietnam
3) Dietary items of the aquatic predacious insect
4) Mating systems in the giant water bug (Belostomatidae)
5) Raptorial traits of predacious bug
Publications (υnon-referee publication):
2013 and in press
Ohba S, Ohashi K, Pujiyati E, Higa Y, Kawada H, Mito N, Takagi M. (2013) The effect of Pyriproxyfen as a "population growth regulator" against Aedes albopictus under semi-field conditions. PLoS One 8(7) e67045.
Nakazawa T*, Ohba S*, Ushio M. (2013) Predator-prey body size relationships when predators can consume prey larger than themselves. Biology Letters in press. *Both authors equally contributed to this study
Ohba S, Matsuo T, Takagi M. (2013) Mosquitoes and other aquatic insects in fallow field biotopes and rice paddy fields. Medical and Veterinary Entomology 27: 96-103.
Ohba S, Takahashi J, Okuda N. (2013) A non-lethal sampling method for estimating the trophic position of an endangered giant water bug using stable isotope analysis. Insect Conservation and Diversity 6: 155-161.
Ohba S (2013) A general remarks of studies in aquatic insects inhabiting lentic aquatic habitats. The Nature and Insects 48: 2-3. (In Japanese)υ
Ohba S (2013) Is a giant water bug "loach eater"?. The Nature and Insects 48: 12-15. (In Japanese)υ
Ohba S, Ohtsuka M, Sunahara T, Sonoda Y, Kawashima E, Takagi M. Differential responses to predator cues between two mosquito species breeding in different habitats. Ecological Entomology 37: 410-418.
Ohba S, Izumi Y, Tsumuki H. Effect of loach consumption on the reproduction of giant water bug Kirkaldya deyrolli: dietary selection, reproductive performance, and nutritional evaluation. Journal of Insect Conservation 16: 829-838.
Ohba S, Inatani Y. (2012) Feeding preferences of the endangered diving beetle Cybister tripunctatus orientalis Gschwendtner (Coleoptera: Dytiscidae). Psyche 2012: 3 pages (Aricle ID 139714). (Focus issue "Coleoptera")
Ohba S. (2012) Field observation of predation on a Japanese mamushi, Gloydius blomhoffii, by a giant water bug, Kirkaldyia deyrolli. Japanese Journal of Entomology (New Series) 15: 92-93. (in Japanese with English Abstract)
Ohba S. (2011) Density dependent effects of amphibian prey on the growth and survival of the endangered giant water bug. Insects 2: 435-446 (Special issue of "Trophic Interactions of Insects and Amphibians")
Ohba S, Inatani Y (2011) Increasing exotic crayfishes and decreasing giant water bugs in northern Okayama. The Nature and Insects 46: 30-33. (In Japanese)υ
Ohba S, Trang Huynh TT, Kawada H, Loan Luu L, Tran Ngoc H, Le Hoang S, Takagi M. (2011) Mosquitoes and potential mosquito predators in rice agroecosystems of the Mekong Delta, southern Vietnam. Journal of the American Mosquito Control Association 27: 384-392.
Goto N, Ito S, Ohba S (2011) Habitat utilization of pond frog Rana nigromaculata in intermediate and mountainous area in Mitsugi Town, Onomichi City, Hiroshima. Japanese Journal of Environmental Entomology and Zoology 22: 129-138. (In Japanese with English Abstract)
Ohba S (2011) Impact of invesive crayfish Procambarus clarkii on the giant water bug Kirkaldyia deyrolli (Hemiptera) in rice ecosysitem. Japanese Journal of Environmental Entomology and Zoology 22: 93-98.
Ohba S (2011) Ecological studies in lentic aquatic insects including rare species: Consideration of their conservations and applied aspects from the predator-prey relationships Japanese Journal of Environmental Entomology and Zoology 22: 39-48. (In Japanese with English Abstract)*
Ohba S (2011) Field observation of predation on a turtle by giant water bug. Entomological Science 14: 364-365 >> see BBC nature
Ohba S, Trang Huynh TT, Kawada H, Loan Luu L, Tran Ngoc H, Le Hoang S, Higa Y, Takagi M. (2011) Heteropteran insects as mosquito predators in water jars in southern Vietnam. Journal of Vector Ecology 36: 170-174.
Ohba S, Matsuo T, Takagi M. (2010) Mosquito and aquatic animals in fallow field biotope in Nagasaki City. Transactions of the Nagasaki Biological Society 67: 1-5. (In Japanese with English Abstract)υ
Ohba S, Kawada H, Dida OG, Juma D, Sonye G, Minakawa N, Takagi M. (2010) Predators of Anopheles gambiae s.l. (Diptera: Culicidae) larvae in wetlands, western Kenya: Confirmation by PCR method. Journal of Medical Entomology 47: 783-787.
Ohba S, Kashima S, Matsubara H, Higa Y, Piyaseeli UKD, Yamamoto H, Nakasuji F (2010) Mosquito breeding site and people's knowledge of mosquitoes and mosquito borne diseases between temporary housing areas and non-damaged villages in Sri Lanka after the Tsunami strike in 2004. Tropical Medicine and Health 38: 81-86.
Ohba S, Takagi M (2010) Predatory ability of adult diving beetle on Japanese encephalitis vector, Culex tritaeniorhynchus. Journal of the American Mosquito Control Association 26: 32-36.
Kawada H, Maekawa Y, Abe M, Ohashi K, Ohba S, Takagi M. (2010) Spatial distribution and pyrethroid susceptibility of mosquito larvae collected from catch basins in parks in Nagasaki city, Nagasaki, Japan. Japanese Journal of Infectious Diseases 63: 19-24.
Ohba S, Perez Goodwyn PJ (2010) Life cycle of water scorpion, Laccotrephes japonensis, in Japanese rice fields and a pond (Heteroptera: Nepidae). Journal of Insect Science 10:45 available online: insectsicence.org/10.45.
Ohba S, Kato K, Miyatake T. (2010) Breeding ecology and seasonal abundance in the giant water bug, Appasus japonicus Vuillefroy (Heteroptera, Belostomatidae). Entomological Science 13: 35-41.
Ohba S (2010) Feeding habit in Cybister larvae: Is tadpole important food? The Nature and Insects 45: 30-33. (In Japanese).υ
Ohba S (2009) Ontogenetic dietary shift in larvae of Cybister japonicus (Coleoptera: Dytiscidae) in Japanese rice fields. Environmental Entomology 38: 856-860.
Ohba S (2009) Feeding habits of the diving beetle larvae Cybister brevis Aube (Coleoptera: Dytiscidae) in Japanese wetlands. Applied Entomology and Zoology 44: 447-453.
Ohba S, Swart CC (2009) Intraguild predation of water scorpion Laccotrephes japonensis (Nepidae: Heteroptera). Ecological Research 24: 1207-1211.
Ohba S, Perez Goodwyn P (2009) Early maturation in males of the giant water bug Appasus major Esaki (Heteroptera: Belostomatidae). Japanese Journal of Environmental Entomology and Zoology 20: 27-30.
Ohba S (2009) Dietary items of giant water bug in rice fields. The Nature and Insects 44: 9-12. (In Japanese).υ
Ohba S (2009) Foraging behavior and raptorial character in giant water bug. In: Handbook of Aggressive Behavior Research (Caitriona Quin and Scott Tawse eds), pp. 515-528. Nova Science Publishers,
Ohba S, Tatsuta H, Nakasuji F (2008) Variation in the geometry of foreleg claws in sympatric giant water bug species: an adaptive trait for catching prey? Entomologia Experimentalis et Applicata 129: 223-227.
Yanagi S, Kashima S, Ohba S, Matsubara H, Piyaseeli UKD, Yamamoto H, Nakasuji F (2008) The comparison of population density of Musca domestica nebulo (Diptera: Muscidae) between a temporary housing area and an unaffected village in Sri Lanka after about one year from a tsunami. Medical Entomology and Zoology 59: 81-84.
Miyasaka H, Genkai-Kato M, Miyake Y, Kishi D, Katano I, Doi H, Ohba S, Kuhara N (2008) Relationships between length and weight of freshwater
macroinvertebrates in Japan. Limnology 9: 75-80.
Ohba S (2008) The number of tadpoles consumed by the nymphs of the giant water bug Kirkaldyia deyrolli under laboratory conditions. Limnology 9: 71-73.
Ohba S, Miyasaka H, Nakasuji F (2008) The role of amphibian prey in the diet and growth of giant water bug nymphs in Japanese rice fields. Population Ecology 50: 9-16.
Ohba S, Nakasuji F (2007) Density-mediated indirect effects of a common prey, tadpole on interaction between two predatory bugs: Kirkaldyia deyrolli and Laccotrephes japonensis. Population Ecology 49: 331-336.
Ohba S (2007) Notes on the predators and their effect on the survivorship of the endangered giant water bug, Kirkaldyia (= Lethocerus) deyrolli (Heteroptera, Belostomatidae), in Japanese rice fields. Hydrobiologia 583: 377-381.
Ohba S (2007) Ecological studies on the interspecific interactions among the
giant water bug Kirkaldyia deyrolli (Heteroptera: Belostomatidae), its prey animals and predators. Ph.D. thesis, Okayama University, 104pp. (In Japanese).
Ohba S, Nakasuji F (2006) Dietary items of predacious aquatic bugs (Nepoidea: Heteroptera) in Japanese wetlands. Limnology 7: 41-43.
Perez Goodwyn PJ, Ohba S, Schnack JA (2006) Chorion morphology of the eggs of Lethocerus delpontei, Kirkaldyia deyrolli, and Horvathinia pelocoroides (Heteroptera: Belostomatidae). Russian Entomological Journal 15: 151-156.
Ohba S, Tatsuta H, Sasaki M (2006) Raptorial legs and claws are not influenced by food condition in nymphal stages of Lethocerus deyrolli. Annals of the Entomological Society of America 99: 151-156.
Ohba S, Hidaka K, Sasaki M (2006) Notes on paternal care and sibling cannibalism in the giant water bug Lethocerus deyrolli (Heteroptera: Belostomatidae). Entomological Science 9: 1-5.
Ohba S, Takagi H (2005) Food shortage affects flight migration of the giant water bug, Lethocerus deyrolli in pre-wintering season. Limnology 6: 85-90.
Mori A, Ohba S (2004) Field observations of predation on snakes by the giant water bug. Bulletin of the Herpetological Society of Japan 2004: 78-81. (In Japanese)υ
Ohba S (2002) Synchronized mechanism and its meaning in the egg hatching of the giant water bug, Lethocerus deyrolli (Heteroptera: Belostomatidae). Japanese Journal of Entomology (New Series) 5: 157-164 (In Japanese with English Abstract).
Manuscript reviews (Alphabetization):
Annals of the Entomological Society of America
Applied Entomology and Zoology (3)
Entomological Science (5)
European Journal of Entomology
Invertebrate Reproduction & Development
Japanese Journal of Applied Entomology and Zoology
Japanese Journal of Entomology (New Series)
Journal of Freshwater Ecology
Journal of Medical Entomology
Journal of Natural History
Journal of Vector Ecology (2)
Polish Journal of Entomology
Population Ecology (2)
2010-(2012) Grant-in-Aid for Scientific Research from JSPS Fellowship
2008-(2009) The Yakumo Foundation for Environmental Science
2006-(2008) Fujifilm Green Fund
2002-(2004) The Zoshinkai Fund for Protection of Endangered Animals