Comparison of Muridae population in two different habitats at Bang Phra [Thailand] reservoir non-hunting area.
1993
Pinnoy J.
The study aims to estimate and compare the population characteristics of animals in Family Muridae in different non-agricultural habitats at Bang Phra Reservoir Non-Hunting Area, Cholburi Province, Thailand. Multiple capture-recapture sampling was applied by laying out of 10 x 10 grids with an area of 0.81 ha each in forest plantation, grazed and ungrazed grassland habitats during the period of November-December 1992. In the forest plantation grid, 27 Rattus rattus were captured. Population estimate was 27-46 animals, with the biomass of 3.39-6.15 kg and density of 15.60-26.52 animals/ha. The mean home range was 0.0432 ha and mean movement distance was 41.69 m. The sex and age ratios were 1:1. Two specimens of Mus cervicolor were captured in the grazed grassland. There are no quantitative data for this species because the number captured was too small. Bandicota indica were trapped in ungrazed grassland. Their estimates were 12-18 animals for population size, 4.69-6.83 kg for biomass, and 8.17-12.26 animals/ha for density. The mean home range was 0.0320 ha and mean movement distance was 31.20 m. Sex ratio was 1:3 and age ratio was 1:1. The population size and density of murids in forest plantation were larger than in grassland but the biomass of the murid were almost equal. Individual home range and movement distance of B. indica in grassland seemed smaller than those in forest plantation but they were not statistically different. The diversity index of murid species in each habitat type was equal to one because there was only one species that had been captured in each grid location.
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