大贵寺国家森林公园中华蟾蜍食性初步分析

摘要

The diet of Bufo gargarizans in Hubei Daguisi National Forest Park was studied. The results showed that the feed fillness in stomach of B. gargarizans was 3-4 level. The feed blonged to 3 phyla 4 classes 7 orders 18 families and the insects of Isoptera, Coleoptera and Orthoptera accounted for 91.94%. The feed diversity index and the trophic niche width was 2.141 4 and 8.489 3, respectively. It was indicated that the B. gargarizans played an important role in preventing and controlling the agricultural pests as its helpfulness index was 80.65%.%对湖北大贵寺国家森林公园的中华蟾蜍(Bufo gargarizans)进行了食性分析,结果表明,中华蟾蜍的胃充塞度为3-4级;食物隶属于3门4纲7目18科,以等翅目、鞘翅目及直翅目昆虫为主,占食物总数量的91.94%;食物多样性指数(H)为2.141 4,营养生态位宽度(B)为8.489 3,有益系数较高,为80.65%,因而对防治农林虫害具有重大意义.