Impact of Sangban Dam on the morphologicl chaactrestics of Siah mahi (Capoeta gracilis, keyserling, 1864) populations using traditional and geometric morphometrics techniques

Document Type : Morphology

Authors

1 Biodiversity department, Environment Faculty, Islamic Azad University, Science and Research Branch, Tehran, Iran

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

3 Biodiversity department, Environment Faculty, Islamic Azad University, Science and Research Branch, Tehran, Iran.

Abstract

Manipulation of riverine ecosystems shch as Taleghan river by construction of dam on them, provide new ecological conditions for its Inhabitants which they must be adapted to these new conditions for surviving. Therefore, this study was carried out to investigate the morphological differences of Siah mahi (Capoeta gracilis) populations living up and downstream of the Sangban Dam constructed on the Taleghan river, using geometric and traditional morphometric methods and also, to compare the feasiblity of these two methods to reveal their morphological differences. The results showed that geometric morphometric technique is an accurate and powerfull tool to discriminate close populations in terms of morphological charactrestics compared to traditional one. Therefore, two populations of Siah mahi were morphologicaly discrimintaed using geometric method nethod (P<0.05). The results also revealed that the Sangban Dam was caused differences in morphological features including body depth, head length and depth and caudal peduncle depth of up and downstream populations of Siah mahi.

Keywords

Journal of Animal Environment
Volume 8, Issue 2
August 2016
Pages 97-104

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