摘要
采用系统调查的方法对深圳市红火蚁发生区荔枝园内的哀弓背蚁Camponotus dolendus和红火蚁Solenopsis invicta种间关系进行了研究.结果表明:红火蚁发生较严重的荔枝园,哀弓背蚁和红火蚁种群数量间表现为明显负相关,相关系数为-0.8194,而红火蚁发生较轻的荔枝园两者不相关.2种蚂蚁种间存在明显的竞争关系,其竞争系数(α)为0.3249.在轻度发生荔枝园,气温对哀弓背蚁种群数量变动的直接作用最大;而在重度发生荔枝园,气温通过影响红火蚁种群数量进而对哀弓背蚁产生的间接作用最大.决定系数分析结果表明,红火蚁是影响哀弓背蚁种群数量变动的最主要决定因素.经主成分分析,获得了2个包含3个因子的主成分,其累积方差贡献率分别为95.73%和95.75%,并给出了2个主成分与3因子间函数表达式.建立了哀弓背蚁工蚁数量与气温(X1)、空气相对湿度(X2)、红火蚁工蚁数量(X3)之间的回归方程为Y=5.4902-0.0630X1-2.8131X2-0.0033X3.
Interspecific relationship between Solenopsis invicta Buren and Camponotus dolendus Forel in litchi orchard in Shenzhen was studied by systematic investigation.The results revealed the correlation index,-0.819 4,told negative correlation between the two species of ants at litchi orchard infested heavily by red imported fire ant,and no correlation at litchi orchard infested lightly by red imported fire ant.Competition index,0.324 9,indicated that competition occurred betweeen the two species.In 3 factors at litchi orchards infested lightly by red imported fire ant,areo temperature had heavy indirect effect on C.dolendus.But indirect effect of areo temperature on C.dolendus via direct effect on red imported fire ant was high at litchi orchards infested heavily by red imported fire ant.S.invicta was the most important deciding factor in 3 factors which influenced C.dolendus population by analysis of decision index.2 principal components including 3 factors were given out,and their cumulative variance proportion were 95.73%,95.75% repectivlely.The formula describing the relationship between the C.dolendus and aero temperature（X1）,relative humidity（X2）,S.invicta workers per bait（X3） was built up Y=5.490 2-0.063 0X1-2.813 1X2-0.003 3X3.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2007年第4期6-10,共5页
Journal of South China Agricultural University
基金
国家自然科学基金(305712427)
国家"973"计划项目(2002CB111400)
广东省科技计划项目(2005A20401001
2006A20301005)
农业部"2007年农作物病虫害疫情监测与防治项目"
关键词
红火蚁
哀弓背蚁
种间关系
Solenopsis invicta
Camponotus dolendus
interspecific relationship
作者简介
席银宝（1976-），男，博士，现在安徽农业大学植物保护学院工作；
通讯作者：曾玲（1949-），女，教授，E-mail：zengling@scau．edu．cn
