摘要
为探究影响广聚萤叶甲Ophraella communa LeSage选择豚草产卵的环境因素,在南京城郊于2009年6月23日至9月1日豚草生长季节,跟踪调查了60个豚草斑块上落卵数量动态,运用跨栏模型分析了影响叶甲产卵以及产卵数量的因素。结果表明:(1)产卵发生随季节延长、豚草被取食程度增大、株高增长、暴露环境中斑块增大而增加,但随遮蔽环境中豚草斑块增大、开花、开花后季节延长、季节延长情况下被取食程度增大、开花后被取食程度增大等因素而降低;(2)落卵数量随季节延长、豚草被取食程度增大、暴露环境、开花期被取食程度增大、开花期株高增长等因素而增加,但随豚草开花、季节延长情况下被取食程度增大而减小;(3)落卵量随季节延长而增大的幅度在豚草营养生长期明显大于开花期,在暴露环境中随季节延长而呈明显直线增大,但在遮阴环境中先直线增加,于10周后趋缓。研究结果说明,影响产卵发生与落卵数量的因素不完全一致,产卵发生与落卵数量主要受因子之间互作的影响,而较少受到单因素的独立影响。
To explore the potential factors that influence host plant selection of Ophraella communa for oviposition on common ragweed（Ambrosia artemisiifolia）,a consecutive field survey of 60 plant patches for egg deposition was made in the field.Hurdle models were fitted to analyze factors that influence probability of oviposition and the amount of eggs deposited on plants.The results showed that：（1） Oviposition increased with progress of the season,feeding damage level,plant height,and patch size in open environment,but decreased with plant patch size,blossom,seasonal progress in blossom,and feeding damage level with progress of the season and after blossom.（2） Number of eggs deposited on plants increased with progress of the season,feeding damage level,open environment,feeding damage level at the blossom stage,and plant height at the blossom stage,but decreased with blossom,and feeding damage level with progress of the season.（3） The increase of eggs on plants with progress of the season was more distinct during vegetative growth stage than blossom stage,and constantly linear in open environment,but linear at first and then asymptotic in shading environment.The study suggests that the factors influencing oviposition selection are not identical to those affecting quantity of egg deposition,and the influence is exercised more through interactions between factors than single factor alone.
出处
《昆虫学报》
CAS
CSCD
北大核心
2011年第11期1297-1304,共8页
Acta Entomologica Sinica
基金
国家重点基础研究发展规划项目(2009CB119200)
国家科技支撑计划课题(2006BAD08A18)
关键词
广聚萤叶甲
产卵选择
豚草
环境因素
跨栏模型
入侵生物学
Ophraella communa
oviposition selection
Ambrosia artemisiifolia
environmental factors
hurdle model
invasion biology
