4.0 Article

A network approach to modeling population aggregation and genetic control of pest insects

期刊

THEORETICAL POPULATION BIOLOGY
卷 74, 期 4, 页码 324-331

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.tpb.2008.09.003

关键词

Sterile male release; Network model; Pest management; Population aggregation; Insect invasion

资金

  1. UK Biotechnology and Biological Sciences Research Council (BBSRC)
  2. Royal Society
  3. Royal Society University Research Fellow

向作者/读者索取更多资源

Historically, models of the invasion and biological control of insect pests have omitted heterogeneities in the spatial structure of the targeted populations. In this study, we use stochastic network simulations to examine explicitly population heterogeneity as a function of landscape structure and insect behavior. We show that when insects are distributed non-randomly across a heterogeneous landscape, control can be significantly hindered. However, when insect populations are clustered as a result of limited dispersal, genetic control efficiency can be enhanced. In developing the model, we relax a key assumption of previous theoretical studies of genetic control: that released genetic control insects remain homogenously distributed irrespective of the spatial structure of the wild type populations. Here, this behavior (termed the 'coverage proportion') is parameterized and its properties are explored. We show that landscape heterogeneity and limited dispersal have little effect on the critical coverage proportion necessary for control. (c) 2008 Elsevier Inc. All rights reserved.

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