University of Isfahan Taxonomy and Biosystematics 3115-9001 12 43 2020 08 22 The Application of the Geometric Morphometric Technique in Evaluating Sexual Dimorphism in the Body Shape of Aphaniops Hormozensis from Mehran and Shur Rivers (Hormozgan Basin) استفاده از روش ریخت‌سنجی هندسی در ارزیابی دوشکلی جنسی گورماهی هرمزیAphaniops hormuzensis (Teimori, Esmaeili, Hamidan, Reichenbacher, 2018) در رودخانه‌‌های مهران و شور (حوضۀ هرمزگان) 35 44 25375 10.22108/tbj.2021.126700.1146 EN Atta Mouludi-Saleh Ph. D. Student of Aquatic Ecology of Fisheries, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran Soheil Eagderi Associate Professor, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Iran Reza Nahavandi Assistant Professor, Animal Science Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran Journal Article 2020 12 28 Abstract During 2018-2019, to investigate the sexual dimorphism in the body shape and morphological variations of Aphaniops hormozensis inhabiting in Mehran and Shur rivers of the Hormozgan basin using the geometric morphometric method, 80 specimens were collected. In the laboratory, the left side of the samples was photographed and 17 landmark points were digitalized on the 2D images. To eliminate non-shape data including size, direction, and position, the extracted data were analyzed by the generalized procrustes analysis using discriminant function analysis based on the p-value of T-test Hoteling. The results of the present study showed significant differences between the body shape of males and females within the population and male-male and female-female inter-populations (p < 0.05). Male species in both populations had a smaller head, lower body depth, and longer caudal peduncle than those of females. Males and females of the Mehran River have a deeper and longer caudal peduncle than those of Shur Rivers.

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