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Issue:ISSN 2095-1353
           CN 11-6020/Q
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Your Position :Home->Past Journals Catalog->2015年52 No.2

Using geometric morphometrics to quantify the sexualdimorphism of Pantala flavescens
Author of the article:BAI Yi1, 2** DAI Dong-Feng2 BAO Ke-Ou2 QIU An-Ni2 LIANG Ren-Jie2 WANG Hai-Rui3
Author's Workplace:1. Institute of Zoology, Shaanxi Normal University, Xi’an 710062, China; 2. School of Life Sciences, Taizhou University, Taizhou 317000, China; 3. School of Sports Sciences, Taizhou University, Taizhou 317000, China
Key Words: Pantala flavescens, sexual dimorphism, geometric morphometrics, wings, shape variation
Abstract:

[Objectives]  To quantify sexual wing dimorphism in Pantala flavescent Fabricius. [Methods]  We obtained wing shape information by digitizing the fore and hindwings of P. flavescens. Sexual dimorphism in wing shape and vein structure was then analyzed by principal component analysis (PCA) and the thin-plate spline (TPS) graphical technique. [Results]  The PCA results indicate significant sexual dimorphism in the fore and hindwing. TPS indicates that forewing differences are mainly in the nodus and triangle, whereas hindwing differences were mainly in the nodus and in the area of the cubital and anal veins. Centriod size (CS) indicates that females have a bigger fore and hindwing than males. [Conclusion]  Sexual dimorphism in wing shape in P. flavescens probably reflects selection for different wing shape and vein structure in each sex.

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