CAJ | 학술논문

在杜鹃与其宿主的协同进化中，宿主种群繁殖密度被认为是预测其是否被杜鹃寄生的重要指标．2011年4-8月，在贵州宽阔水国家级自然保护区对不同类型生境的红嘴相思鸟（Leiothrixlutea）的种群繁殖密度进行调查，以分析其种群繁殖密度与杜鹃（CuculWspp．）寄生之间的关系．红嘴相思鸟在宽阔水自然保护区分布广泛，平均种群繁殖密度为108．37±28．68只／km2，其中在次生林中最高，达201．41±7．36／km2，其次为灌丛和原生林．居民点的密度最低，为34．15±7．86只／km2．1999—2011年的繁殖季，共找到红嘴相思鸟的巢347个，均未发现被杜鹃寄生，巢寄生率为0．分析表明，繁殖时间和种群繁殖密度不是杜鹃未利用红嘴相思鸟的原因．
재두견여기숙주적협동진화중，숙주충군번식밀도피인위시예측기시부피두견기생적중요지표．2011년4-8월，재귀주관활수국가급자연보호구대불동류형생경적홍취상사조（Leiothrixlutea）적충군번식밀도진행조사，이분석기충군번식밀도여두견（CuculWspp．）기생지간적관계．홍취상사조재관활수자연보호구분포엄범，평균충군번식밀도위108．37±28．68지／km2，기중재차생림중최고，체201．41±7．36／km2，기차위관총화원생림．거민점적밀도최저，위34．15±7．86지／km2．1999—2011년적번식계，공조도홍취상사조적소347개，균미발현피두견기생，소기생솔위0．분석표명，번식시간화충군번식밀도불시두견미이용홍취상사조적원인．
Population breeding density of hosts is regarded as a valuable index to predict cuckoo parasitism rate in avi- an brood parasitism. To test this hypothesis, population breeding density and brood parasitism rate of Red-billed Leio- thrix (Leiothrix lutea) were investigated from April to August, 2011 in Kuankuoshui National Natural Reserve (KKS), Guizhou, south-western China. Our results showed that the Red-billed Leiothrix is a widespread and dominant species with a population breeding density of 108.37±28.68 individuals per km2 in KKS. The highest density was detected in sec- ondary forest, with 201.41±7.3 individuals per km2, followed by shrub and primary forest. Residential area has the lowest density of 34.15±7.86 individuals per km2. A total of 347 nests of the Red-billed Leiothrix were found from 1999 to 2011 and the cuckoo brood parasitism rate of this host is 0. Breeding time and population density could not explain the ab- sence of cuckoo parasitism in the Red-billed Leiothrix.