Habitat preference of Sefid river loach, Oxynoemacheilus bergianus (Steindachner, 1897) in Jajroud River by comparing its preference in autumn and winter

Document Type : Research Paper


1 University of Tehran

2 Department of Fisheries, Faculty of Natural Resources, Isfahan University of Technology. Isfahan. Iran

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

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


Understanding the habitat preference of riverine species is important in their management to protect their habitat. This study aimed to investigate the habitat preference of the Sefid river loach, Oxynemacheilus bergianus in Jajroud River by comparing its preference in autumn and winter. For this purpose, elevation, depth, water current velocity, river width, slope, average diameter of the bedrock, type of predominant bedrock cover, EC, TDS, pH, water temperature and beach vegetation were measured and investigated in autumn and winter. The preferred habitat of this species in autumn had lower elevation and depth, faster water current, medium rock bed, lower slope, higher temperature, medium EC and TDS and river bank with shrub-tree cover, but in winter the selected habitat changed to areas with higher elevation, depth and water current, and bed with medium-sized rocks, medium temperature, medium EC, less TDS and the river bank with tree cover i.e. the results showed that the preferred habitat of this species in winter changes to areas with greater depth, width, elevation and slope.


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