神戸市近郊の野生イノシシのトキソプラズマ抗体保有状況

Abstract

Seventeen plasma samples, obtained from wounded or diseased wild boars (Sus scrofa) which had been captured in the vicinity of Kobe city for the purpose of protection, were examined for antibodies against Toxoplasma gondii (Tp) by the latex agglutination (LA) test. Nine of the 17 samples tested gave positive reactions (≥32).Nine positive samples had LA titers of ≥128; five of these were fractionated by the sucrose density gradient centrifugation, and each fraction was reassayed by the LA-test. Anti-Tp IgG antibodies were detected in one 20-day-old and two day-old infant boars. These IgG antibodies were interpreted as maternal antibodies, suggesting that their dams had been infected with Tp. One adult female exhibiting two peaks of IgG and IgM antibodies was considered to be in the initial stage of infection.The results of the present survey indicate that Tp is prevalent among wild boars inhabiting the suburbs of Kobe city and warn that boars should be handled with great care to prevent Tp infection.