2019 Volume 23 Issue 1 Pages 4-8
After wild boar arrived at the Japanese Islands during the Middle-Late Pleistocene, its distribution had spread nationwide, except Hokkaido. Afterwards in the latter half of 19th century, it had shrunk to western part of Japan by the change of the socio-economic structure of Japan. However, the energy revolution and the economic growth of Japan in 1960’s have led to the distribution recovery of wild boar and to increase in agricultural damage by the species. Now the damage by wild boar amounts over 5 billion yen per year in recent years. To solve agricultural problem by wild boar 43 prefectural governments, as of 2019, have planned the Specified Wildlife Management Plan involving feedback system. But few plans adopt ecological investigations and fulfill its feedback system function. As a result, agricultural damage by wild boar have not been decreasing.
In addition to the agricultural problem, in September 2019, an outbreak of the C.S.F. in wild boar population is confirmed. The Japanese government is concerned about expansion of its infection and the immediate enforcement of the C.S.F. is required. However, the general public does not understand the ecological characteristic of the wild boar correctly. As a result, when people carry out various wild boar measures, inappropriate technique tends to be used.
Therefore, in this paper, I will comment on the ecological characteristic of the wild boar and show the C.S.F. prevention of epidemics from a point of view of the ecology of wild boar.
