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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2019, Vol. 7, Issue 2, Part D

Analysis of body shape variation in Glossogobius giuris (Hamilton 1882) sampled from Lake Mainit, Philippines, using geometric morphometrics


Author(s): Virgilio B Ratunil, Clevin P Libay, Emmylou A Borja, Gideon A Ebarsabal, Gregorio Z Gamboa, Dexter Q Mahomoc, Jerry B Manongas and Cresencio C Cabuga

Abstract: Fluctuating Asymmetry (FA) is a tool to assess morphological differences from different bioindicator species. This study was conducted to evaluate the body shape variation of Glossogobius giuris sampled from Lake Mainit, Philippines, using geometric morphometrics. A total of 60 specimens was collected with 30 each sex. Landmarking techniques were established and applied to the fish morphology. Samples were subjected to tps Util and Symmetry and Asymmetry Geometric Data (SAGE) software to identify the body shape analysis. Among the factors analyzed, Procrustes ANOVA results shown a highly significant difference (P<0.0001) in the female and male samples and thus, indicating a shape differences between the sexes. While Principal Component Analysis (PCA) displayed a higher percentage in female samples (83.1614%) than of the male (79.3984%) denoting body shape variations between the populations indeed, females are highly inclined to perturbations since they need a buffer from various environmental requirements and primarily through the reproduction process. Thus utilizing geometric morphometric enables to determine morphological variations of species among and within the taxa.

Pages: 287-294  |  450 Views  48 Downloads

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How to cite this article:
Virgilio B Ratunil, Clevin P Libay, Emmylou A Borja, Gideon A Ebarsabal, Gregorio Z Gamboa, Dexter Q Mahomoc, Jerry B Manongas, Cresencio C Cabuga. Analysis of body shape variation in Glossogobius giuris (Hamilton 1882) sampled from Lake Mainit, Philippines, using geometric morphometrics. Int J Fish Aquat Stud 2019;7(2):287-294.
International Journal of Fisheries and Aquatic Studies