Abstract: Objective To understand the natural population dynamics and spatial distribution of Tyrophagus putrescentiae in storage flour， so as to provide an evidence for its prevention and control. Methods The samples from five sampling points in Wuhu City were collected monthly from January to December， 2013， and examined and counted for T. putrescentiae. The dispersion pattern target， Iwao’s m*?[x] regression analysis and Taylor’s lgS2?lg[x] regression analysis were used for analyzing the spatial distribution pattern of T. putrescentiae in the storage flour. Results The peaks of population dynamics of T. putrescentiae were discovered in July and September. The indexes of dispersion were as follows： I > 0， CA > 0， m*/[x] > 1； and the linear regression equation of Iwao： m* = 3.740 3 + 1.017 5[x] （r = 0.995 8） and Taylor： lgS2 = 0.500 4 + 1.134 9 lg[x] （r =0.832 8） showed that the spatial distribution pattern of T. putrescentiae in the storage flour was assembled. Conclusion The peak of population dynamics of T. putrescentiae in the storage flour in Wuhu City is a double peak type， and the spatial distribution pattern of T. putrescentiae is assembled.

Key words: Tyrophagus putrescentiae； Population dynamics； Spatial distribution pattern

摘要： 目的 探讨腐食酪螨自然种群季节性消长动态及其在芜湖市仓储面粉中的空间分布型，为腐食酪螨的防制提供理论依据。方法 自2013?1-2013?12，选择芜湖市区5个采样点，每月进行定点采样，鉴定及计数其中的腐食酪螨。运用扩散型指标、Iwao m*?[x]回归方程及 Taylor lgS2?lg[x]回归分析研究腐食酪螨种群在仓库面粉中的空间分布特征。结果 芜湖市区仓储面粉中的腐食酪螨高峰期在7月和9月。扩散型指标I > 0，CA > 0，m*/[x] > 1； Iwao的线性回归方程为m* = 3.740 3 + 1.017 5[x]（r = 0.995 8）， Taylor线性回归方程为lgS2 = 0.500 4 + 1.134 9 lg[x]（r = 0.832 8），表明腐食酪螨在仓储面粉中为聚集分布。结论 腐食酪螨在芜湖市仓储面粉中的自然种群季节性消长呈双峰型，空间格局为聚集分布。 ［关键词］　腐食酪螨；种群动力学；空间分布型

关键词: 腐食酪螨；种群动力学；空间分布型