摘 要：
【目的】掌握黄猄蚁在不同腰果品系上的分布及动态特征,筛选出黄猄蚁丰富度较高的腰果品系,为壮大其种群数量开展腰果害虫生物防治提供参考依据。【方法】选取5个优良腰果品系(CP63-36、FL30、GA63、HL2-13和HL2-21),于2017年3月—2018年1月每隔2个月调查1次不同腰果品系植株上的黄猄蚁活动数量,计算有蚁树比率和丰富度指数并分析其动态。【结果】5个腰果品系均发现有黄猄蚁分布,但不同腰果品系的有蚁树比率和黄猄蚁丰富度指数均存在显著差异(P<0.05),其中GA63上的有蚁树比率和黄猄蚁丰富度指数均最大,分别为37.21%和23.29%,其次是HL2-13、FL30和HL2-21,CP63-36上的有蚁树比率和黄猄蚁丰富度指数最低,分别为1.14%和0.83%。不同腰果品系的有蚁树比率和黄猄蚁丰富度指数动态存在差异,其中GA63上的有蚁树比率和黄猄蚁丰富度指数在观察期内始终保持在高位,均在7月出现明显峰值,分别为48.84%和31.63%,最低值分别出现在5和1月,分别为27.91%和16.92%。【结论】腰果品系GA63上黄猄蚁的种群数量最大。枝繁叶茂的树体结构是有利于黄猄蚁分布的重要因素。
译 名：
Distribution and dynamics analysis of weaver ant(Oecophylla smaragdina Fabricius)on different cashew varieties
作 者：
ZHANG Zhong-run;GAO Yan;HUANG Wei-jian;HUANG Hai-jie;XIAO Li-yan;Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China,Ministry of Agriculture and Rural Affairs;Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection;
关键词：
Oecophylla smaragdina Fabricius;;cashew;;rate of tree with ants;;abundance index
摘 要：
【Objective】To clarify the distribution and dynamics of weaver ant(Oecophylla smaragdina Fabricius)on different cashew varieties,screen the cashew varieties with high weaver ant abundance and provide reference for increasing the population of weaver ant in biological control of cashew pests.【Method】Five fine varieties(CP63-36,FL30,GA63,HL2-13 and HL2-21)were selected for this study,the number of weaver ant on cashew plants of different cashew varieties were observed from March,2017 to January,2018 through field survey at two months intervals,then calculated the rate of tree with ants and weaver ant abundance,and analyzed the dynamics.【Result】The results showed that,the weaver ants were found in all five cashew varieties,but the differences in both trees with ants rate and abundance index among the five cashew varieties were significant(P<0.05). Cashew variety GA63 had the highest trees with ants rate(37.21%)and weaver ant abundance index(23.29%),followed by cashew varieties HL2-13,FL30 and HL2-21. CP63-36 had the lowest trees with ants rate(1.14%)and weaver ant abundance index(0.83%). The rate of tree with ants and weaver ant abundance index of different cashew varieties were different in dynamics,those of GA63 maintained at high level du-ring the observation period,and appeared obvious peaks in July,which were 48.84% and 31.63% respectively,and the lowest values occurred in May and January,which were 27.91% and 16.92%.【Conclusion】The weaver ant population is the biggest on cashew variety GA63,luxuriant foliage may be an important factor for the distribution of weaver ant.
