关键词: 鼠密度, 种群构成, 季节消长

Abstract:

Objective To monitor the rodent population distribution and its seasonality, and provide scientific evidence for controlling the infestation of rat and rodent destruction. Methods Adopting night trapping method and chosing medium mouse trap which specifications for 120 mm×65 mm, with fresh dough as bait. The mouse traps were placed along the wall base indoor and a certain terrains outdoor. Laying mouse traps in the monitoring sites of same areas at adjacent month were not allowed. Monitored once in the mid-month, rainy day does not monitor, laying mouse traps at night and recoverying at daytime. Count the numbers of effective mouse trap and mouse. Finally, calculate the rat density. Results A total of 254 rodents were captured from 2008 to 2012, with a mean density of 1.26%. Of all rodents, the dominant species was Rattus flavipectus (67.32%). The rodent density followed a double-peak curve, with the first peak in March and the second peak in September and October. The density of rodents was the highest in the key units, followed by general unit, residential indoor and outdoor environments. Conclusion For the rodents in Changning, their community composition and seasonal density fluctuation are acquired. It is suggested to take integrated rodent control measures and enhance long-term monitoring, early warning, and prevention of rodents and rodent-borne diseases according to the habits and characteristics of rodents and their seasonal density fluctuations.

Key words: Rodent density, Species composition, Seasonality