Narrow versus broad:sexual dimorphism in the wing form of western European species of the subgenus Avaritia(Culicoides,Ceratopogonidae)  

作　　者：Francesc MUÑOZ-MUÑOZ Nonito PAGÈS Ana.F.DURAO Marion ENGLAND Doreen WERNER Sandra TALAVERA 

机构地区：[1]Departament de Biologia Animal,de Biologia Vegetal i d’Ecologia,Facultat de Biociències,Universitat Autònoma de Barcelona,Barcelona,Spain [2]Centre de Recerca en Sanitat Animal(CReSA),UAB-IRTA,Campus de la Universitat Autònoma de Barcelona,Barcelona,Spain [3]CIRAD,UMR ASTRE,Guadeloupe,France [4]ASTRE,CIRAD,INRAe,Universitéde Montpellier,Montpellier,France [5]The Pirbright Institute,Surrey,UK [6]Leibniz-Centre for Agricultural Landscape Research,Müncheberg,Germany

出　　处：《Integrative Zoology》2021年第5期769-784,共16页整合动物学（英文版）

基　　金：This study was partly financed by the Instituto Nacional de Investigaciones Agrarias(project number FAU2008-00019-C03).

摘　　要：While wing form is known to differ between males and females of the genus Culicoides,detailed studies of sexual dimorphism are lacking.In this study,we analyze sex-specific differences in the wing form of 5 species of the subgenus Avaritia,using geometric morphometrics and comparative phylogenetic methods.Our results confirm the existence of marked sexual dimorphism in the wing form of the studied species and reveal for the first time that while there is a shared general pattern of sexual shape dimorphism within the subgenus,sexual size dimorphism,and particular features of sexual shape dimorphism differ among species.Sexual shape dimorphism was found to be poorly associated to size and the evolutionary history of the species.The tight association of sexual shape dimorphism with aspect ratio suggests that the shape of the wing is optimized for the type of flight of each sex,that is,dispersal flight in females versus aerobatic flight in males.Moreover,the fact that interspecific shape differences are greater and more strongly associated to aspect ratio in males than in females might be indicating that in males the selective pressures affecting flight performance characteristics are more heterogeneous and/or stronger than in females among the studied species.

关 键 词：aspect ratio geometric morphometrics phylogenetic signal shape size 

分 类 号：Q96[生物学—昆虫学]