Volume 9, Issue 2 (Autumn 2019)
J. Aqua. Eco 2019, 9(2): 129-139 |
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Ghorbani-Ranjbari Z, Keivany Y. Geometric morphometric comparison of three populations of Mesopotamian minnow (Barilius mesopotamicus Berg, 1932) in Jarrahi River basin. J. Aqua. Eco 2019; 9 (2) :129-139
URL: http://jae.hormozgan.ac.ir/article-1-560-en.html
URL: http://jae.hormozgan.ac.ir/article-1-560-en.html
Abstract: (2799 Views)
The present study compared the geometric morphometrics of Barilius mesopotamicus populations, one of the native cyprinids in Jarrahi River basin. For this purpose, 166 fish specimens from three populations of Aalaa, Zardmashin, and main Jarrahi rivers were sampled. Specimens were anesthetized in 1% clove oil, fixed in 10% neutralized formalin, and transferred to the laboratory. Pictures were taken from the left side of the specimens and digitized using 15 landmarks placed on two-dimensional images using Tpsdig2 software. The data after Procrustes analysis was analyzed with Principal Component Analysis (PCA), Canonical Variate Analysis (CVA), and Cluster Analysis (CA). Geometric morphometric comparisons showed significant differences amongst the studied populations which were due to the differences in head size and shape, body height, and length of the caudal peduncle. The CVA fully separated Jarrahi population from the other two populations. Zardmashin and Aala populations were slightly overlapped. The CA also clustered Zardmashin and Aala populations in one group, indicating more similarity between these two populations.
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This work is licensed under a Creative Commons — Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)