Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Historical invasion, expansion process and the potential geographic distributions for the rice water weevil, Lissorhoptrus oryzophilus in China based on MAXENT.

Abstract

The rice water weevil, Lissorhoptrus oryzophilus Kuschel, is a disastrous plant quarantine pest of rice in China. According to occurrence records for rice water weevil all over the world, historical invasion, dispersal process and the potential geographic distributions for the pest were reanalyzed by using ecological niche model (MAXENT) and ArcGIS with rice planting data. The historical invasion and expansion process of L. oryzophilus within China were mainly classified into two phases of scattering dispersion and rapid expansion. During the period from 1988 to 1996, the rice water weevil concentrated in Circum-Bohai Sea Region and southeastern coastal area, and firstly invaded sites mostly located at port cities. In the second period of 2000 s, it gradually had spread further inland from the eastern coastal region, and the firstly detected sites were mostly along railways or highways. The rice water weevil could survive in more than 90% of rice planting area across China. The highly potential region located at rice growing region mainly in southern China and partly in the Circum-Bohai Sea Region.