虎纹蛙的食物多样性及营养生态位  

Feeding habits and nutritional niche of Tiger frog

作　　者：邵晨[1] 

机构地区：[1]浙江师范大学化学与生命科学学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2007年第2期135-139,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省自然科学基金资助项目(M303128)

摘　　要：通过实验室剖胃观察,研究了浙江省金华地区虎纹蛙(Rana rugulosa)成体的食物多样性及营养生态位.结果表明:虎纹蛙喜食活的动物性食物,且以昆虫纲动物为主,主要有鞘翅目和同翅目,以及甲壳纲、蛛形纲的小动物等;也取食一些植物.随着栖息环境和个体大小的不同,其食性与捕食数量也有差异.雄体虎纹蛙的食物多样性指数大于雌体,而营养生态位宽度则小于雌体.在虎纹蛙种群中,雌雄间的营养生态位重叠值较大,说明雌雄间的食物成分相差不大.With the stomach been cut open, the food diversity of adult Tiger frog （ Rana rugulosa ） in the area of Jinhua of Zhejiang Province was observed in the laboratory, the nutritional ecology was studied. The results indiedted that Rana rugulosa likes to prey on living animals. It seemed that they took hexapods, for instance, Homoptera, Coleoptera and so on, as their main food, while also preyed on some other small animals and plants. Their feeding habits and predation quantity were showed to be different, along with the different perching environment and the individual dimension. The food diversity index of the male was showed to be much than that of the female, but the width of nutritional niche to be less than the female＇s. The volume of nutritional niche superimposition between the male and the female was great which also indicated that the sexual diference of food components was small.

关 键 词：虎纹蛙 食物多样性 营养生态位 有益系数 金华地区 

分 类 号：Q958[生物学—动物学]