RESEARCH BULLETIN OF KAOHSIUNG DISTRICT AGRICULTURAL IMPROVEMENT STATION
Volume 12, Number 2 December, 2000

Population density and control efficacy of field rodents at
Bai-Sha, Penghu

Tsai, C. C. and Chiu, J. T.1

Abstract

　Population densities of field rodents were investigated by remove trapping method at Bai-Sha, Penghu from 1997 to 1999. Only Mus formosanus and Rattus losea were found. The ratio of Mus formosanus to Rattus losea was 1:1.3 before control, and was 4：1 after control. Mus formosanus was the dominent. The average density was 73.7 per hectare before control and dropped to 2.1 after control. The control was 97.2%.

Key words: Mus formosanus、Rattus losea、Removel trapping、Rodent pest control