A network of sex and competition： The promiscuous mating system of an invasive weevil  

作　　者：Alberto Francesco INGHILESI Giuseppe MAZZA Rita CERVO Alessandro CINI 

机构地区：[1]Department of Biology, University of Florence, Via Romana 17, 50125 Florence, Italy [2]Agricultural Research Council, Research Centre for Agrobiology and Pedology, via Lanciola 12/A, Cascine del Riccio, 50125 Florence, Italy [3]Department of Biology, University of Florence, Via Madonna del Piano 6, 50019 Sesto Fiorentino, Florence, Italy [4]Corpo Forestale dello Stato, Centro Nazionale Biodiversit~t Forestale "Bosco Fontana",Via C. Ederle 16/a, 37100 Verona, Italy

出　　处：《Current Zoology》2015年第1期85-97,共13页动物学报（英文版）

摘　　要：Invasive alien pest insect species represent a major threat for agriculture and biodiversity. Because chemical treatments employed to contrast such pests elicit serious environmental and human health problems, a great effort is currently directed to develop long term and environmentally friendly biological control strategies. However, the successful application of some promising techniques, such as the Sterile Insect Technique （SIT）, requires a deep knowledge of the pest basic biology. Here, we argue that understanding pest sexual biology using a social network approach can significantly improve the performance of con- trol strategies. For example, SIT may benefit from understanding how individuals interact and how males accede to reproduction, in order to target the most reproductively active and polygamic males. In this paper we studied the socio-sexual networks of the Asian red palm weevil （RPW） Rhynchophorusferrugineus, a worldwide invader which is causing heavy economic impacts on several palm species. We found that the RPW has a highly promiscuous mating system, characterized by forced interruptions of pair copulations by additional males. The social network is highly non-random nor regular： few males almost monopolize repro- duction, behaving as key-players in the network of matings. Additionally, males have a stable pattern of sexual behaviour over time. We use RPW social network as a case study to direct the development of management techniques such as SIT strategy [Current Zoology 61 （1）： 85-97, 2015].

关 键 词：Social network analysis Pest management Mating system Reproductive skew Alien pest Rhynchophorusferrugineus 

分 类 号：S436.68[农业科学—农业昆虫与害虫防治] Q945.6[农业科学—植物保护]