松突圆蚧及友恩蚜小蜂空间分布型和种群消长动态研究
Spatial distribution pattern and population dynamics of Hemiberlesia pitysophila and Encarsia amicula
禹海鑫1**，徐志宏1，2***，陈瑞屏3，许少嫦4，黄泽坤5，林明生3
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作者单位：1.浙江大学昆虫科学研究所 杭州 310029； 2.浙江林学院农业与食品科学学院植物保护系 临安 311300；3.广东省林业科学研究院 广州 510520； 4.广东省森林病虫害防治与检疫总站 广州 510520；5.广东省信宜市林业局森防站 信宜 525300
中文关键词：松突圆蚧， 友恩蚜小蜂， 空间分布型， 消长动态
英文关键词：Hemiberlesia pitysophila， Encarsia amicula， spatial distribution pattern， population dynamics
中文摘要：
通过对广东省试验林区内松突圆蚧Hemiberlesia pitysophila Takagi及其本地种寄生蜂友恩蚜小蜂Encarsia amicula Viggiani et Ren林间空间分布型和种群消长动态的调查研究发现：两者空间分布型相吻合，都为均匀分布；两者在林间全年种群消长曲线均呈“S”型变化。松突圆蚧种群密度高峰期出现在3月下旬至4月下旬, 友恩蚜小蜂种群密度高峰期则分别出现在2月下旬和4月下旬至5月中旬。另外友恩蚜小蜂对松突圆蚧的寄生率全年共出现2个高峰期，分别是2月下旬和4月下旬至6月上旬。结果表明，友恩蚜小蜂和寄主松突圆蚧在林间时空发生规律具有高度一致性。
英文摘要： The spatial distribution pattern and population dynamics of Hemiberlesia pitysophila Takagi and its native parasitoid Encarsia amicula Viggiani et Ren were studied in the experimental forest in Gangdong Province. The results showed that the spatial distribution pattern of them both belonged to uniform distribution. The population dynamics modeling of H. pitysophila and E. amicula were described with “S” curve.There was one peak of the seasonal population density of H. pitysophila, which occurred from late March to late April. There were two peaks of the seasonal population density of E. amicula, which occurred in late February and from late April to mid May respectively.In addition, there were two peaks of the parasitism rates of E. amicula, which occurred in late February and from late April to early June respectively. All results indicated that there was high consistency of the spatial distribution pattern and population dynamics between H. pitysophila and E. amicula.