于2009年4月至2011年6月,在洞庭湖区湖滩、滨湖农田、防洪堤坝3种生境中捕捉黑线姬鼠(Apodemus agrarius)223只,观察胃内容物,分析了洞庭湖区黑线姬鼠的食性。结果表明:洞庭湖区3种生境中黑线姬鼠的食物组成都以植物种子为主,总计达(66.55±2.37)%,其次为植物茎、叶,其比例为(19.01±2.13)%,植物根所占比例为(8.27±1.05)%,动物性食物为(6.05±0.97)%。但黑线姬鼠的食物组成会随着不同生境、季节而有一定的变化。种子资源相对较少的季节和生境,相应的黑线姬鼠的食物组成中的种子所占比例就会较低。同一生境中,幼年鼠和亚成年鼠的食物组成与成年鼠、老年鼠区别较大,孕期雌鼠与同季节、同生境的非孕期雌鼠相比也有较大差异。说明尽管黑线姬鼠以取食植物种子为主,但其食性会随着生境可获得资源的不同而有所调整。 From April 2009 to June 2011, 223 Apodemus agrarius were captured in three kinds of habitats, including lake beach, farmland in the lake and flood dam, in Dongting Lake area. The contents of stomach were observed, and the black line in Dongting Lake area Apodemus food habits. The results showed that the food composition of Apodemus agrarius in Dongting Lake was dominated by plant seeds, accounting for 66.55 ± 2.37%, followed by the stems and leaves of the plants (19.01 ± 2.13)%, and the plant The proportion of root was (8.27 ± 1.05)% and that of animal food was (6.05 ± 0.97)%. However, Apodemus agrarius food composition will vary with different habitats, seasons and have some changes. Relative seasons and habitats with less seed resources, the proportion of seeds in the food composition of Apodemus agrarius is lower. In the same habitat, the composition of food in juvenile and sub-adult rats is quite different from that in adult mice and old mice. There is also a big difference between the females and non-pregnant females in the same season and in the same habitat. It shows that although Apodemus agrarius mainly feeds on plant seeds, its feeding habits will be adjusted according to the available resources of habitats.