本文關(guān)鍵詞： 狹顱田鼠 艾虎 捕食風(fēng)險 集群數(shù)量　出處：《生態(tài)學(xué)報》2016年24期 　論文類型：期刊論文

【摘要】：2005年9月15日—30日,在內(nèi)蒙古錫林郭勒盟西烏珠穆沁旗的典型草原上研究了狹顱田鼠(Microtus gregalis)冬季集群與來自艾虎(Mustela eversmanni)的捕食風(fēng)險。采用鼠洞口數(shù)量作為狹顱田鼠集群大小的指標(biāo),分析了艾虎對不同大小狹顱田鼠集群的捕食優(yōu)先選擇偏好。對實驗樣地內(nèi)狹顱田鼠的洞群洞口數(shù)進(jìn)行了調(diào)查統(tǒng)計(樣地內(nèi)總共涉及102個狹顱田鼠有效洞群),并計數(shù)此期間的艾虎糞便堆數(shù)以及攻擊掘開狹顱田鼠洞群的情況。運用非參數(shù)的Mann-Whitney U檢驗法進(jìn)行數(shù)據(jù)分析,結(jié)果表明:從艾虎遺留的糞便痕跡來看,沒有被艾虎訪問過的田鼠洞群與被艾虎訪問過的洞群之間差異達(dá)到極顯著水平;另外,從狹顱田鼠洞口被艾虎掘開的痕跡來分析,沒有被艾虎挖掘的洞群與被艾虎挖掘的洞群之間的差異也達(dá)到極顯著的水平;另外,隨著田鼠洞群洞口數(shù)量的增加,出現(xiàn)艾虎糞便和掘洞的頻次和概率就越高。表明艾虎對狹顱田鼠集群洞口數(shù)的選擇差異性非常顯著,明顯傾向于選擇在洞口數(shù)量多的狹顱田鼠洞群停留,同時也更傾向于掘開洞口數(shù)量較高的狹顱田鼠洞群作為捕食對象。
[Abstract]:September 15, 2005 - 30 days, in the typical steppe of Inner Mongolia Xilinguole Meng West Ujimqin banner on the narrow skull (Microtus gregalis) winter voles cluster and (Mustela eversmanni) from the polecat predation risk. Using the rat hole number as the cluster size narrow skull vole index, analysis of different sizes of polecat narrow headed vole cluster predation priority the number of the group preference. The hole on experimental plots within the narrow skull voles were investigated (plots involving a total of 102 narrow skull cave, and effective vole) count in the period of polecat faeces. Number and attack narrow skull cave dug vole situation. By using the Mann-Whitney U test method of non parameter for data analysis, the results showed that: from left traces of polecat feces, there is no difference between being polecat visited caverns and polecat voles visited caves with a significant; In addition, from the narrow skull hole was dug Ai Hu vole traces of analysis, Ai Hu was not mining cave excavation by Ai Hu and between group differences also reached significant level; in addition, with the increase of the number of tunnels in the vole, Ai Hu feces and burrowing frequency and the higher the probability that. Ai Hu on the narrow skull hole number selection of cluster voles had significant difference, obviously tend to choose in the number of narrow skull cave voles stay, also tend to be more open the higher number of narrow skull cave as vole prey.

【作者單位】： 中國科學(xué)院生態(tài)環(huán)境研究中心城市與區(qū)域生態(tài)國家重點實驗室;中國科學(xué)院大學(xué);新疆維吾爾自治區(qū)治蝗滅鼠指揮部辦公室;內(nèi)蒙古錫林郭勒盟鑲黃旗草原工作站;內(nèi)蒙古錫林郭勒盟蘇尼特左旗草原工作站;

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