2019 年 91 巻 1 号 p. 53-58
Under the Invasive Alien Species Act, tomato producers in Japan are required to prevent the diffusion of non-native bumblebees in the environment. Because of the lack of the government staff, it is necessary for those producers to organize themselves to monitor mutually the management of the bees. Based on questionnaires, this paper examines how tomato producers recognize the feasibility of such mutual monitoring. The paper shows that mutual monitoring is endorsed by those producers who are interested in the harmful influence of the bees on ecosystems or recognize that there are differences in their efforts to prevent the escape of the bees.