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大学院農学研究科 応用生物科学専攻






Aye T. Win, Yuto Machida, Yoshihiro Miyamoto, Shigeto Dobata, Kazuki Tsuji
Journal of Ethology      2018年1月
© 2018, Japan Ethological Society and Springer Japan KK, part of Springer Nature. We investigated colony-level foraging activities of Diacamma sp., a queenless ponerine ant, in the field. Our aim was to elucidate the presence of any pattern in for...
Ryoga Otake, Shigeto Dobata
Animal Cognition      2018年1月
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature. The use of conspecific cues as social information in decision making is widespread among animals; but, because this social information is indirect, it is error-prone. During resource a...
Nobuaki Mizumoto, Shigeto Dobata
Scientific Reports   8    2018年12月
© 2018 The Author(s). Animals have evolved various sex-specific characteristics to improve the efficiency of mating encounters. One is the sex-specific attracting signal. Signal receivers perform a combination of random search and navigation befor...
Eisuke Hasegawa, Nobuaki Mizumoto, Kazuya Kobayashi, Kazuya Kobayashi, Shigeto Dobata, Jin Yoshimura, Jin Yoshimura, Jin Yoshimura, Saori Watanabe, Yuuka Murakami, Kenji Matsuura
Scientific Reports   7    2017年12月
© 2017 The Author(s). The study of collective decision-making spans various fields such as brain and behavioural sciences, economics, management sciences, and artificial intelligence. Despite these interdisciplinary applications, little is known r...
Wataru Suehiro, Fujio Hyodo, Hiroshi O. Tanaka, Chihiro Himuro, Tomoyuki Yokoi, Shigeto Dobata, Benoit Guénard, Robert R. Dunn, Edward L. Vargo, Kazuki Tsuji, Kenji Matsuura
Scientific Reports   7    2017年12月
© 2017 The Author(s). Invasions are ecologically destructive and can threaten biodiversity. Trophic flexibility has been proposed as a mechanism facilitating invasion, with more flexible species better able to invade. The termite hunting needle an...
Naohisa Nagaya, Nobuaki Mizumoto, Masato S. Abe, Masato S. Abe, Shigeto Dobata, Ryota Sato, Ryusuke Fujisawa
PLoS ONE   12    2017年6月
© 2017 Nagaya et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
Nobuaki Mizumoto, Masato S. Abe, Masato S. Abe, Shigeto Dobata
Journal of the Royal Society Interface   14    2017年5月
© 2017 The Author(s) Published by the Royal Society. All rights reserved. All organisms with sexual reproduction undergo a process of mating, which essentially involves the encounter of two individuals belonging to different sexes. During mate sea...
A. Gotoh, M. Dansho, S. Dobata, Y. Ikeshita, F. Ito
Insectes Sociaux   64 123-131   2017年2月
© 2016, International Union for the Study of Social Insects (IUSSI). The colony structures of social insects vary greatly among species. In ant societies, the number of queens within a colony is variable during colony maturation. We investigated t...
Ryusuke Fujisawa, Naohisa Nagaya, Shinya Okazaki, Ryota Sato, Yusuke Ikemoto, Shigeto Dobata
ROBOMECH Journal   2    2015年12月
© 2015, Fujisawa et al.; licensee Springer. Field robots are widely used to accomplish a variety of tasks in many different fields. However, setting of the locomotive ability of these robots at the design phase may prevent the traversal of unknown...
Ryusuke Fujisawa, Shigeto Dobata, Ken Sugawara, Fumitoshi Matsuno
Swarm Intelligence   8 227-246   2014年9月
© 2014, Springer Science+Business Media New York. In swarm robotics, communication among the robots is essential. Inspired by biological swarms using pheromones, we propose the use of chemical compounds to realize group foraging behavior in robot ...
Shigeto Dobata, Shigeto Dobata, Kazuki Tsuji
Proceedings of the National Academy of Sciences of the United States of America   110 16056-16060   2013年10月
Cooperation in biological, social, and economic groups is underpinned by public goods that are generated by group members at some personal cost. Theory predicts that public goods will be exploited by cheaters who benefit from the goods by not payi...
Ryusuke Fujisawa, Shigeto Dobata
2013 IEEE/SICE International Symposium on System Integration, SII 2013   808-813   2013年1月
This paper describes an implementation of Lévy walk (or Lévy flight) to pheromone communicating swarm robots. Lévy flight is a special class of random walk in which the step length distribution is given by power law distribution. Lévy flight is kn...
Yuichi Ogawa, Shigeto Dobata, Fumitoshi Matsuno
2013 IEEE/SICE International Symposium on System Integration, SII 2013   694-699   2013年1月
Red harvester ants allocate themselves to some tasks. In this paper, we propose the ODE model which represents their macro behaviors. In this model, colony size fluctuates due to workers' birth and death. Using the simulator based on this model, w...
Shigeto Dobata
Evolution   66 3754-3764   2012年12月
Policing against selfishness is now regarded as the main force maintaining cooperation, by reducing costly conflict in complex social systems. Although policing has been studied extensively in social insect colonies, its coevolution against selfis...
Shigeto Dobata, Kazuki Tsuji, Kazuki Tsuji
Proceedings of the Royal Society B: Biological Sciences   279 2553-2560   2012年7月
© 2012 The Royal Society. Colonies of eusocial Hymenoptera, such as ants, bees and wasps, have long been recognized as candidates for the study of genomic imprinting on the grounds of evolutionary conflicts that arise from close interactions among...
S. Dobata, H. Shimoji, H. Shimoji, H. Ohnishi, E. Hasegawa, K. Tsuji
Insectes Sociaux   59 55-59   2012年2月
Sex mosaicism, also called gynandromorphism, refers to an accidental phenomenon in dioecious organisms (mainly animals) in which an individual phenotype includes both female and male characteristics. Despite the rarity of this phenomenon, elucidat...
Ryusuke Fujisawa, Shigeto Dobata, Yuuta Sasaki, Riku Takisawa, Fumitoshi Matsuno
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)   7461 LNCS 228-235   2012年9月
The recruiting system in foraging ant colonies is a typical example of swarm intelligence. The system is underpinned by the use of volatile pheromones which form a trail connecting from nest to food. We have incorporated this property into the beh...
Kôji Sasakawa, Hiroshi Ikeda, Mitsuaki Sutou, Shigeto Dobata, Motomi Itô
Canadian Entomologist   143 211-223   2011年5月
We report the presence and effects of parasitoid larvae (Hymenoptera) in the carabid beetle Poecilus versicolor (Sturm). Dissection of one female and one male live host found 33 and 25 hymenopteran larvae, respectively. Although eggs were absent i...
Kazuki Tsuji, Shigeto Dobata
Myrmecological News   15 91-99   2011年5月
We review some aspects of the biology of the ant Pristomyrmex punctatus, in which the winged queen caste is absent and wingless females reproduce by thelytokous parthenogenesis. The majority of females have two ovarioles, whereas up to 50% of colo...
S. Dobata, S. Dobata, T. Sasaki, T. Sasaki, H. Mori, H. Mori, E. Hasegawa, M. Shimada, K. Tsuji
Molecular Ecology   20 441-455   2011年2月
How cooperation can arise and persist, given the threat of cheating phenotypes, is a central problem in evolutionary biology, but the actual significance of cheating in natural populations is still poorly understood. Theories of social evolution p...
Ryusuke Fujisawa, Shigeto Dobata, Fumitoshi Matsuno
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)   6234 LNCS 570-571   2010年11月
Social organisms form a swarm and forage preys, collectively and effectively [1]. The swarm has to inhibit a variance of foraging frequency for survival, which ensures stable and predictable income. In the previous study, we focused on "trail pher...
Dobata S, Sasaki T, Mori H, Hasegawa E, Shimada M, Tsuji K
Proceedings. Biological sciences / The Royal Society   276(1656) 567-574   2009年2月   [査読有り]
Dobata S, Tsuji K
Communicative & Integrative Biology   2(2) 67-70   2009年   [招待有り]
Fujisawa R, Dobata S, Kubota D, Imamura H, Matsuno F
Dorigo et al. (eds.) Ant Colony Optimization and Swarm Intelligence, 6th International Conference, ANTS 2008, Brussels, Belgium, September 22-24, 2008. Proceedings. Lecture Notes in Computer Science   5217 LNCS(5217) 283-290   2008年11月   [査読有り]
In this paper, we discuss the concentration dependency of pheromone communication in swarm robotics. Instead of a pheromone trail and the insect antenna, we used ethanol and an alcohol sensor. This experimental system has a trade-off problem; high...
Hayashi F, Dobata S, Futahashi R
Zoological science   22(8) 869-881   2005年8月   [査読有り]
Mnais costalis and M. pruinosa are damselflies (Odonata: Calopterygidae) with low dispersal abilities, both during their aquatic stream-living immature stage and their flying adult stage. A previous nuclear DNA (nDNA) sequencing and morphology stu...
F. Hayashi, S. Dobata, R. Futahashi
Odonatologica   33 399-412   2004年12月
Much variation occurs in morphology and colouration among individuals of Japanese Mnais spp. It has been noted that 2 groups of Mnais often cohabit a stream in western Japan. There is, however, no clear morphological difference in ♂ appendages and...


日本ロボット学会誌   35(6) 459-462   2017年7月   [査読有り][依頼有り]
水元 惟暁, 土畑 重人
日本ロボット学会誌   35(6) 448-454   2017年
藤澤 隆介, 土畑 重人, 菅原 研
計測と制御 = Journal of the Society of Instrument and Control Engineers   52(3) 252-257   2013年3月
昆虫と自然(ニューサイエンス社)   44(4) 24-29   2009年3月   [依頼有り]
土畑 重人, 淀江 賢一郎, 奥島 雄一
すかしば   (56) 65-77   2008年9月