%0 Journal Article
%T Comparison of Food Components Between Rana pleuraden and Rana chaochiaoensis from Kunming and Evaluation of Their Benefit and Harm<br>昆明滇蛙和昭觉林蛙食物比较及益害评价
%A ZHOU Wei
%A PAN Xiao-fu
%A OU Xiao-hong
%A ZHANG Qing
%A <br>周伟
%J 动物学研究
%D 2007
%I Chinese Academy of Sciences
%X Food components of 1 105 individuals of Ranapleuraden and 428 Rana chaochiaoensis collected from Bailongsi, Huahongdong and Xijiekou of Kunming from May 1998 to November 2003 were analyzed by dissecting their stomachs. It was calculated that percentage of number and frequency, a diversity index, index of percent similarity, width of trophic ecological niche, overlap of trophic ecological niche and beneficial coefficient of the two frog species. According to results, major food components of different populations of R. pleuraden collected from different localities as well between R. pleuraden and R. chaochiaoensis were basically identical. However, there were differentiation in food diversity and trophic ecological niche between R. pleuraden and R. chaochiaoensis as well between their males and females. The annual beneficial coefficients of both R. pleuraden and R. chaochiaoensis were positive, which implied that their benefit for mankind was larger than harm. The beneficial level of R. pleuraden was higher than one of R. chaochiaoensis. The study results showed that beneficial coefficient could be changed among populations of a species collected from different regions and/or the same population collected from different seasons or years, which meant that the beneficial coefficient could not be compared. This coefficient only expressed the level of benefit and harm for mankind in the certain period.
%K Rana pleuraden
%K Rana chaochiaoensis
%K Analysis of food components
%K Food diversity
%K Trophic ecological niche
%K Evaluation of benefit and harm<br>滇蛙
%K 昭觉林蛙
%K 食性分析
%K 食物多样性
%K 营养生态位
%K 益害评价
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=7C502F1A6798ACE1B8C57E291C48C7F1&aid=476CB0F922415443&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=CA4FD0336C81A37A&sid=D3E34374A0D77D7F&eid=339D79302DF62549&journal_id=0254-5853&journal_name=动物学研究&referenced_num=1&reference_num=25