Document Type : Research Paper

Authors

1 PhD student, Department of Fisheries, Faculty of Natural resources, University of Tehran, Karaj, Iran

2 Associate Professor / University of Tehran - Faculty of Natural Resources - Fisheries Department

3 Assistant Professor/Department of Animal Sciences, Faculty of Agriculture and Natural Resources, Lorestan University, Khoramabad, Iran.

Abstract

The morphological comparison of five populations of Mosul bleak (Alburnus mossulensis Heckel, 1843) was done using Elliptic Fourier analysis. For this porpose a total of 219
specimens were caught from Tigris basin (Gamasiab, Karoon, Kashkan, Khersan and Sepidbarg Rivers) using electrofishing. The fish were photographed from left sides using a digital
camera and the outline curve was digitized using TpsDig2 software and resampled to 150
equal distanced landmarks. The outline curveswere converted to a readable file format for
EPA analysis using EFAWIN software and EFA analysis was done opting 17 shape harmonics
with 2 constants and four coefficients per harmonic and non-shapeddata were removed
usin general Procrustes analysis. The principal component analysis (PCA) and Manova/CVA
were used for morphological comparison in PAST software. The results showed significant
shape differences between populations but Sepidbarg population (pand Sepidbarg populations were distinguishable having a fusiform shapedbody and the
other three other populationswere distinguishable based on a shorter caudal peduncles.
The present study proved the potential of the geometric morphometrics (outline curves)
for recognizing various populations of the Mosul bleak.

Keywords

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