Jiji Press TOKYO (Jiji Press) —The Environment Ministry said Friday that it has found over 500 adult fire ants, an invasive alien species, at the Honmoku Pier in the Port of Yokohama in Kanagawa Prefecture.
The fire ants were highly likely to have propagated themselves there since many larvae were also found, according to the ministry. There was no queen ant. All ants there were killed with pesticide.
They were found in a crack in the asphalt of a container yard in the pier during a survey covering seven major ports by the transport ministry and experts.
Fire ants have been found in five prefectures so far. They were first found in Japan in a container in Amagasaki in Hyogo Prefecture in late May.