北京市越冬长耳鸮食物中鼠类成分调查  

Rodent components in the food of Asio otus in Beijing area

作　　者：鲍伟东[1] 孙来胜 李晓京[1] 彭宝明[1] 刘硕[3] 

机构地区：[1]北京林业大学生物科学与技术学院动物科学系,北京100083 [2]平谷区第六中学 [3]昌平区疾病预防控制中心

出　　处：《中国媒介生物学及控制杂志》2007年第3期184-186,共3页Chinese Journal of Vector Biology and Control

基　　金：教育部归国留学人员科研启动基金(2004527)

摘　　要：目的分析越冬期长耳鸮食物的构成,评估对不同鼠种捕食强度的时空动态。方法于2003-2006年冬季应用直接观察法,在北京市城区和城郊结合部收集冬季长耳鸮的食团,分析内容物中鼠类的种类和数量构成。结果长耳鸮食团内容物中共发现鼠类7种,城区和郊区的鼠种没有明显差异,褐家鼠与小家鼠均为主要猎物;在越冬期的3个时间段内,被捕食鼠类的总体构成没有明显变化,但褐家鼠、小家鼠与黑线姬鼠的被捕食率有差异。结论褐家鼠与小家鼠构成了越冬期长耳鸮的主要食物资源,鼠类的捕食反映了北京市城区和郊区鼠类构成的空间分布与时间变动特点。Objective Analyzing the prey rodent species components of wintering Asio otus and evaluating the special-temporal dynamics of the predation rates on these species. Methods The food pellets of the wintering Asio otus were collected from urban parks and suburb area of Beijing from 2003 to 2006. The content of the pellets were observed directly and the rodent species and numbers were identified and recorded. Results Totally 7 rodent species were found as prey of the wintering Asio otus. There were no differences for the species components between urban and suburb samples, and among 3 time periods. The predation rates of the Norway rat, house mouse and striped field mouse changed with time, of which the form two species were the main prey. Conclusion The wintering Asio otus took Norway rat and house mouse as main food. The dynamics of predation rates for rodents concordant with the special-temporal changes of wild rodents at urban and suburb area.

关 键 词：长耳鸮 越冬期 鼠类 北京市 

分 类 号：S443[农业科学—农业昆虫与害虫防治]