Comparative study of morphological characteristics of Tuini fish (Capoeta damascina) in inland water of Iran using geometic morphometric method

Document Type : Research Paper

Authors

1 MSc., Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran

2 Assistant Professor, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran

3 Associate Professr, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran

4 Associate Professor, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran

5 Associate Professor, Department of Fisheries, Faculty of Natural Resources, Isfahan University of Technology, Isfahan, Iran

Abstract

Quantifying morphological characteristics of body shape in fishes can help their correct identification as well as understanding of evolutionary history of their different populations. Hence, this study was aimed to compare the morphological characteristics of different population of Tuini fish (Capoeta damascina) in inland-water of Iran using Geometic morphometrics method (GM). In total 373 specimens of Tuini were collected from thirteen rivers of Tigris, Kerman, Jazmoorian, Golf, Hormoz, Isfahan and Namak Lake basins. Then, the lateral surface of their left side photographed and seventeen landmark-points defined and digitized using TpsDig2 software to extract body shape data in (GM). The coordinate data after GPA superimposing, analyzed using PCA, CVA and cluster analysis. The body shape pattern of every population was visualized in relation to consensus shape of total populations. The results revealed a significant difference in the body shape of studied populations (P<0.0001). Their differences were associated to body depth, position of fins and caudal peduncle. The results also showed that populations of Namak Lake basin differentiated in terms of body shape in compare to others one due to a different body shape.

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References

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