摘要
黑斑蛙在北京稻区可取食13目、62科昆虫,其中多数为害虫,有益系数为13％,故黑斑蛙是有益动物。雌雄个体在取食量上差异不大;但在不同年龄组的捕食系数差异显著,幼年组为72.22％,亚成年组为13.85％,成年组为10.09％。从所采的400只黑斑蛙按年龄组划分,幼年组占42.25％,亚成年殖占31.5％,成年组占26.25％,壮年组为0。
The rana nigromaculata can catch many kinds of pests in the rice field. An investigation reveals that they can catch 62 families of insects among 13 orders. As the beneficial coefficient is 13%, rana nigromaculata is a beneficial kind of animal which can hold an important position in the biological of pests.
基金
北京市级科研项目<北京地区蛙类资源研究>
关键词
黑斑蛙
食性
生物防治
稻田
rana nigromaculata, feeding habits, rice field, biological control.
