神奈川県鎌倉市におけるアメリカザリガニの由来

抄録

According to literature, the red swamp crayfish, Procambarus clarkii (Girard, 1852) was introduced into Kamakura, Kanagawa Prefecture, Japan in 1927, as food for the bullfrog, Rana catesbeiana, from New Orleans, Louisiana, U. S. A. Procambarus clarkii spread all over the Japanese Archipelago, though the introduction occurred only once. We examined the history of introduction of P. clarkii based on archive in the Kamakura municipal office and specimens from New Orleans present study. Furthermore, its origin, the present status at the initial introduced place, and the number of P. clarkii introduced into Japan were referred through observation of their symbionts (Annelida: Clitelia) and lineages of the initial introduction.