Morphological variations based on geometric morphometrics between male and female pronota of Oxythyrea cinctella (Schaum, 1841) (Coleoptera: Scarabaeidae, Cetoniinae)

Authors : Yavuz Koçak, Aslı Doğan Sarıkaya, Özkan Sarıkaya, Ülfet Şahin

Pages : 331-337

Doi:10.17474/artvinofd.985036

View : 353 | Download : 1806

Publication Date : 2021-11-19

Article Type : Research Paper

Abstract :In this study, pronotum size and shape were used as an exemplar characteristic to evaluate the utility of pronotal morphology on the sexual dimorphism determination of the scarab beetle Oxythyrea cinctella (Schaum, 1841). Using geometric morphometrics, the sexual size and shape dimorphism of pronotum of 85 specimens (45 females, 40 males) collected from Ankara Province (Turkey) were analyzed. Results of geometric morphometrics revealed that there is statistically significant sexual size and shape dimorphism in pronotum. Further, the mean centroid sizes of the females was significantly larger than that of the males. Finally, multivariate regression results indicated that size has negligible influence on the differentiation in pronotum shape between sexes. We hope the results here presented would be helpful for the further understanding of the sexual dimorphism in the beetle genus Oxythyrea.
Keywords : Oxythyrea cinctella, Scarab kınkanatlısı, Pronotum, Landmark temelli morfometri, Eşeysel dimorfizm

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