Research keywords (5)：
Research theme for competitive and other funds (3)：
2001 - Clonal reproduction and caste determination in ant, Vollenhovia emeryi.
2002 - Mutualistic interactions between ants and plants with fruits and seeds
2004 - Ecological study for the conservation of waterfowl in Katano Kamoike
Ohkawara. K., K. Nakamura, N. Kadokura and T. Terashita. Geographical variation in mandible morphologies specialized for collembolan predation depend on prey size in the ant Strumigenys lewisi. 2017. 42. 156-163
Ohkawara, K. and Aonuma, H. Changes in the levels of biogenic amines associated with aggressive behavior of queen in the social parasite ant Vollenhovia nipponica. Insectes Socaiux. 2016. 63. 2. 257-264