Species Concepts as Applied to the Whitefly Bemisia tabaci Systematics:How Many Species Are There?  

作　　者：LIU Shu-sheng John Colvin Paul J De Barro 

机构地区：[1]Key Laboratory of Agricultural Entomology, Ministry of Agriculture~Institute of lnsect Sciences, Zhejiang University, Hangzhou 310058, P.R. China [2]Natural Resources Institute, University of Greenwich, Kent ME4 4TB, United Kingdom [3]CSIRO Ecosystem Sciences, Brisbane QLD 4001, Australia

出　　处：《Journal of Integrative Agriculture》2012年第2期176-186,共11页农业科学学报（英文版）

基　　金：funded by the National Basic Research Program of China(2009CB119203);the National NaturalScience Foundation of China(30730061);the ChinaAgriculture Research System(CARS-25-B-08)

摘　　要：The worldwide distribution and extensive genetic diversity of the whitefly,Bemisia tabaci,has long been recognized.However,the levels of separation within B.tabaci and the nomenclature of the various genetic groups have been a subject of debate.Recent phylogenetic analyses indicate that B.tabaci is a complex composed of 28 morphologically indistinguishable species.In this article,we first review the debate and difficulties associated with B.tabaci＇s taxonomy and systematics,and argue for the need to apply the biological species concept in order to elucidate B.tabaci＇s systematics.We summarize the accumulated genetic and behavioural data on reproductive incompatibilities evident amongst phylogenetic mtCOI groups of B.tabaci.Crossing studies have been conducted with 14 of the 28 putative species covering 54 reciprocal inter-species pairs,and observations on mating behaviour have been conducted for seven species pairs.Data from both crossing trials and behavioural observations indicate a consistent pattern of reproductive isolation among the putative species.We then discuss the technical and conceptual complexities associated with crossing experiments and behavioural observations designed to reveal reproductive incompatibility.Finally,we elaborate on a strategy for further clarifying the pattern of reproductive isolation between B.tabaci groups and propose future research directions on the systematics of this complex.The worldwide distribution and extensive genetic diversity of the whitefly,Bemisia tabaci,has long been recognized.However,the levels of separation within B.tabaci and the nomenclature of the various genetic groups have been a subject of debate.Recent phylogenetic analyses indicate that B.tabaci is a complex composed of 28 morphologically indistinguishable species.In this article,we first review the debate and difficulties associated with B.tabaci＇s taxonomy and systematics,and argue for the need to apply the biological species concept in order to elucidate B.tabaci＇s systematics.We summarize the accumulated genetic and behavioural data on reproductive incompatibilities evident amongst phylogenetic mtCOI groups of B.tabaci.Crossing studies have been conducted with 14 of the 28 putative species covering 54 reciprocal inter-species pairs,and observations on mating behaviour have been conducted for seven species pairs.Data from both crossing trials and behavioural observations indicate a consistent pattern of reproductive isolation among the putative species.We then discuss the technical and conceptual complexities associated with crossing experiments and behavioural observations designed to reveal reproductive incompatibility.Finally,we elaborate on a strategy for further clarifying the pattern of reproductive isolation between B.tabaci groups and propose future research directions on the systematics of this complex.

关 键 词：whitefly systematics biological species cryptic species phylogenetic species reproductive isolation mating behavior TAXONOMY 

分 类 号：S[农业科学]