Study on natural population dynamics and spatial distribution pattern of Tyrophagus putrescentiae in stored flour

Zhongguo xue xi chong bing fang zhi za zhi = Chinese journal of schistosomiasis control
Zhan Xiao-DongXi Yi-Long

Abstract

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. 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*- x̄; regression analysis and Taylor's lgS2-lg x̄; regression analysis were used for analyzing the spatial distribution pattern of T. putrescentiae in the storage flour. 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*/ x̄; > 1; and the linear regression equation of Iwao:m* = 3.740 3 + 1.017 5 x̄; (r = 0.995 8) and Taylor:lgS2 = 0.500 4 + 1.134 9 lg x̄; (r =0.832 8) showed that the spatial distribution pattern of T. putrescentiae in the storage flour was assembled. 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.

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