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Click here to go back Details of this species in Japan Status: Alien Invasiveness: Invasive Occurrence: Established Source: Hoddle 2004 Arrival Date: Introduction: Species Notes for this Location: Management Notes for this Location: In 1958 the predatory rosy wolfsnail (Euglandina rosea) was introduced into Japan to control A. fulica. Non-target impacts included the consumption of native snails (Hoddle 2004). Location Notes: Impacts: Reduction in native biodiversity: More than 100 species of land molluscs have been recorded on the islands, of which 94% are endemic (Tomiyama & Kurozumi, 1992, Tomiyama 1994, in Ohbayashi et al. 2007). However, about 40% of the endemic species are already extinct (Kurozumi 1988, Tomiyama & Kurozumi 1992, in Ohbayashi et al. 2007). The following may be possible reasons for this decline: Introduction of exotic snails such as A. fulica (Kurozumi 1988, Tomiyama 2002a, in Ohbayashi et al. 2007); Introduction of the predatory snail E. rosea for the control of A. fulica in 1965 in Chichijima Island (Takeuchi et al. 1991, in Ohbayashi et al. 2007); Predation by predatory flatworms distributed before P. manokwari invasion (Kawakatsu et al. 1999; Okochi et al. 2004, in Ohbayashi et al. 2007); Invasion of the alien predatory flatworm P. manokwari in Chichijima Island in the 1990’s (Kawakatsu et al. 1999, Tomiyama 2002a, Ohbayashi et al. 2005, in Ohbayashi et al. 2007); Predation by alien rats (Tomiyama 2002a, in Ohbayashi et al. 2007); and Forest destruction (Tomiyama 2002a, in Ohbayashi et al. 2007). Last Modified: 9/03/2010 4:28:22 p.m.