Population variation of Capoeta heratensis in Hari River and Dasht-e Kavir basins using geometric morphometric technique

Document Type : Original Article

Authors

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

2 Department of Environmental Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran.

3 Department of Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran.

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

Abstract

This study was conducted to survey population variation of Capoeta heratensis in Hari River and Dasht-e Kavir basins of Iran using geometric morphometric technique. For this purpose, 3 populations of C. heratensis, with 30 specimens for each population, were collected from the Aal, Hari and Bidvaz rivers. The specimens were fixed into buffered formalin after anaesthetizing and transported to the laboratory. The left side of each specimen was photographed using digital camera and fifteen landmark points were digitized on 2D images using TpsDig2. The landmark data after generalised procrustes analysis were analyzed using PCA, CVA and cluster analysis using Past and MorphoJ softwares. CVA analysis displayed significant differences among three studied populations. Based on the results, Bidvaz population showed greater differences compared to two other populations. The observed differences can be attributed to the diversity of habitat and feeding habits of the studied populations as well as geographical separation.

Keywords

Aquaculture Sciences
Volume 5, Issue 1
September 2017
Pages 37-44

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