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Computational Ecology and Software, 2017, 7(2): 65-81
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Article

Landmark based geometric morphometric analysis describing sexual dimorphism in wings of Neurothemis terminata (Ris, 1911) from Mt. Hilong-Hilong, Philippines

C.C. Cabuga, Jr.0,1, L.A.Estano0,1, J.J. Z. Abelada0,1, I.N. B. dela Cruz1, M.K.A. Angco1, C.C. D. Joseph1, J.P. M. Gamallo1, J.E.O. Lador1, H.C. Havana2, P.J.A. Martinez3
0Graduate School, Caraga State University-Main Campus-Ampayon, Butuan City 8600, Philippines
1Biology Department, College of Arts and Sciences, Caraga State University- Main Campus-Ampayon, Butuan City 8600, Philippines
2Cagbas Elementary School, Bayugan City, Agusan del Sur, 8502, Philippines
3Agusan del Sur Pilot Laboratory School, Bayugan City, Agusan del Sur, 8502, Philippines

Received 16 January 2017;Accepted 5 March 2017;Published 1 June 2017
IAEES

Abstract
Landmark-based geometric morphometric analysis describing sexual dimorphism in wings of Neurothemis terminata (Ris, 1911) from Mt. Hilong-Hilong, Remedios Trinidad Romualdez, Agusan del Norte, Philippines was applied in selected female and male populations. A total of 30 females and 30 males were collected and subjected to landmark- based analysis. To demonstrate the variation in wing morphology, landmark data was employed to relative warp analysis and the resulting scores were analyzed using Multivariate Analysis of Variance (MANOVA), Principal Component Analysis (PCA) and Canonical Variate Analysis (CVA). The result shows significant differences (P<0.05) between the appended female and male populations. The obtained result indicates that each sexes of N. terminata displays morphological difference in wings which may be attributed to the sexual selection, flight performance and flapping kinematics.

Keywords sexual dimorphism;geometric morphometrics;Neurothemis terminata;Mt. Hilong-Hilong.



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