Evaluation of sexual dimorphism in Ponticola cyrius in Tajan River using geometric-morphometric and traditional morphometric methods

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RAHMANI H.; Abdollahpour Z.; Jooladeh Roudbar A.

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Journal: Journal of Animal Research Year:2017 | Volume:30 | Issue:1 Page(s): 0-0

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Title

Evaluation of sexual dimorphism in Ponticola cyrius in Tajan River using geometric-morphometric and traditional morphometric methods

Author(s)

RAHMANI H. | Abdollahpour Z. | Jooladeh Roudbar A. | Issue Writer Certificate

Keywords

Kura River gobyQ1

Ponticola cyriusQ2

MorphologyQ1

LandmarkQ2

Tajan RiverQ2

Abstract

Sexual dimorphism is one of the most important an interested subject for biologists that as a result of natural selection pressure on individual based on mating system, the ecological differences between individual and the pressure of natural selection on reproductive associated traits. This study aimed to evaluate the sexual dimorphism in Ponticola cyrius fish in the Tajan River (Mazandaran Province-Iran) using geometric morphometric and traditional morphometric methods. Accordingly, 40 Ponticola cyrius (20 males and 20 females) were caught form the Tajan River. Thereafter, 31 absolute morphometric characteristics were measured and also 27 relative morphometric characteristics were calculated. To compare the geometric morphometric, images were captured form left-side, dorsal and abdominal views. In order to extract data from the body shape of fish, 20, 19 and 12 Landmarks determined in the side, abdominal and dorsal view, respectively, and then were digitalized by tpsDig2 software on 2D pictures. Consequently, the obtained data were analyzed by application of Procrustes method. Data from geometric morphometric and traditional morphometric analysis were evaluated using Principal component analysis, Discriminant function analysis and t-test. The results revealed a significant difference between male and female in all of the mentioned views. According to the results, the male sex of Ponticola cyrius has greater length, body width, head height, dorsal and anal fin length the female one. In addition, the body color of male fish was darker with longer and sharper sex papilla compared to the female one. In conclusion, the traditional and geometric morphometric results in this study coincided remarkably.

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APA: Copy

RAHMANI, H., Abdollahpour, Z., & Jooladeh Roudbar, A.. (2017). Evaluation of sexual dimorphism in Ponticola cyrius in Tajan River using geometric-morphometric and traditional morphometric methods. JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY), 30(1 ), 0-0. SID. https://sid.ir/paper/367917/en

Vancouver: Copy

RAHMANI H., Abdollahpour Z., Jooladeh Roudbar A.. Evaluation of sexual dimorphism in Ponticola cyrius in Tajan River using geometric-morphometric and traditional morphometric methods. JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY)[Internet]. 2017;30(1 ):0-0. Available from: https://sid.ir/paper/367917/en

IEEE: Copy

H. RAHMANI, Z. Abdollahpour, and A. Jooladeh Roudbar, “Evaluation of sexual dimorphism in Ponticola cyrius in Tajan River using geometric-morphometric and traditional morphometric methods,” JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY), vol. 30, no. 1 , pp. 0–0, 2017, [Online]. Available: https://sid.ir/paper/367917/en

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