From the inverse density-area relationship to the minimum patch size of a host-parasitoid system
From the inverse density-area relationship to the minimum patch size of a host-parasitoid system
复制标题
从密度-面积反比关系到寄主-寄生蜂系统的最小斑块大小
DOI：
10.1007/s11284-011-0903-7
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发表时间：
2012-03-01
影响因子：
2
通讯作者：
Hui, Cang
中科院分区：
文献类型：
--
作者：
Zhao, Zi-Hua;He, Da-Han;Hui, Cang
最小适宜生境量是保护性生物防治中的一个重要概念。麦考伊和Mushinsky基于密度-面积反比关系提出了两种估算MASH的方法。利用不同生境下麦蚜寄主-寄生蜂-超寄生蜂的种群密度资料，分析了麦蚜寄主-寄生蜂-超寄生蜂种群密度与面积的负相关关系。人口密度和斑块大小从所有三个营养级之间的显着相关性被发现，一旦人口密度已被对数转换。如果种群密度没有经过对数转换，我们就不能得到同样的结果。我们估计了蚜虫M. avena、燕麦S. graminum、禾本科A. avenae、燕麦A.根据麦考伊和穆辛斯基的方法，烟蚜绵蚜、蚜茧蜂和异色瓢虫的平均面积分别为246、246、479、495、949和835 m（2）。寄主-寄生蜂相互作用的尺度依赖性和系统的空间变化表明，我们可以通过操纵栖息地斑块大小来实现生物控制的最佳效果，尽管不是基于密度-面积的反比关系。
The minimum amount of suitable habitat (MASH) is an important concept in conservation biological control. Two methods for estimating the MASH have been proposed by McCoy and Mushinsky based on an inverse density-area relationship. Using data of the population densities of aphid host-parasitoid-hyperparasitoid collected from wheat fields of different habitat sizes, we argued that the inverse density-area relationship may be an artifact. Significant correlations between population densities and patch sizes from all three trophic levels were found once the population density had been log-transformed. We could not obtain the same results if the population density had not been log-transformed. We estimated that the MASH for the aphid M. avena, S. graminum, A. avenae, A. gifuensis, P. aphidis, and Alloxysta sp. were 246, 246, 479, 495, 949, and 835 m(2) according to the methods of McCoy and Mushinsky. The scale-dependence and the systematic spatial variations of the host-parasitoid interaction suggests that we can achieve an optimal effect of biological control by manipulating the habitat patch sizes, although not based on the inverse density-area relationship.