A suggestion on the estimation method of population sizes ofNiviventer confucianusin Land-bridge island

We live-trapped two Niviventer confucianus populations from March to November of 2010 in Thousand Island Lake region using the capture-mark-recapture(CMR) method.We used Jolly-Seber method,modified Lincoln index method,Schnabel method and minimum number of animals alive(MNA) method to estimate population sizes of Niviventer confucianus,and discussed the applicability of these estimators in white-bellied rats on land-bridge island.Our results showed that there was no significant difference between Jolly-Seber method and modified Lincoln index method.We considered that modified Lincoln index method was more suitable for estimating the population quantity of Niviventer confucianus in the land-bridge island.The study can provide basic data for the future study of population ecology of rodent in the land-bridge island.