Document Type : Research Paper
Authors
1 Department of Environment, Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, Khorasan Razavi Province, Iran
2 Department of Fisheries, Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Khorasan Razavi Province, Iran
3 Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Khorasan Razavi, Iran
4 Department of Biology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Khorasan Razavi Province, Iran
Abstract
Khajoo fish is one of native fishes existing in the northeast of country. Regarding the ability of this species to live in the different habitats, 124 fishes from Tajan and Kavir basins were caught in seven different locations in the northeast of Iran. The left side of the samples was shot and 17 landmarks (sign mark) were digitized to extract body shape data. There was a significant difference between the bodies shapes of all five populations studied. Most of these differences were related to changes in the muzzle region, head depth, chest and thoracic position, indicating the flexibility of these parts in response to the environmental conditions of the habitat of the populations under study. Having a mouth with abdominal position, head shape, spindly body shape were common features among members of this species, which could indicate the generality of the shape of the body of this species, which for species that are found in variable environments such as rivers life, can be an advantage.
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