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Mouludi-Saleh A, Eagderi S, Poorbagher H, Esmaeili H R. Ecological niche overlap from occurrence of two cyprinid sympatric species, Paracapoeta trutta and Capoeta damascina in the Sirvan River, Persian Gulf Basin. nbr 2024; 11 (1) : 6
URL: http://nbr.khu.ac.ir/article-1-3656-en.html
Ecological niche overlap from occurrence of two cyprinid sympatric species, Paracapoeta trutta and Capoeta damascina in the Sirvan River, Persian Gulf Basin
Atta Mouludi-Saleh , Soheil Eagderi * , Hadi Poorbagher , Hamid Reza Esmaeili
Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran , soheil.eagderi@ut.ac.ir
Abstract:   (1120 Views)
This study was conducted to investigate the ecological niche overlap of two sympatric species, Paracapoeta trutta and Capoeta damascina in the Iranian part of the Sirvan River, Persian Gulf basin. For this purpose, during the winter of 2021, sampling was done from eight stations (each with three repetitions). After identification, samples were released into the same sampling sites. Then some 10 environmental factors including depth, water velocity, river width, pH, temperature, electrical conductivity (EC), total dissolved solids (TDS), Altitude, slope, and dissolved oxygen were measured and recorded. Investigating the habitat suitability indices of P. trutta  were recorded as pH 7.5-8, temperature about 10°C, TDS 150mg/liter, EC 400μS/cm, altitude 1150 m, depth 15cm, river width about 9m, velocity 1 m/s, slope 2% and dissolved oxygen 9mg/l and for C. damascina as pH 6-6.5, temperature about 10°C, TDS 180 to 200mg/l, EC 300μS/cm, altitude 1150m, depth 25cm, river width about 6m, velocity 0.5 m/s, the slope is 2% and the dissolved oxygen 8mg. The results of the ecological niche overlap showed that two species based on studied environmental factors had the highest overlap value for dissolved oxygen (0.646) and the  value for temperature (0.293). The average ecological niche overlap was 0.432 for the two species.
 
Article number: 6
Keywords: Cypriniformes, Habitat suitability indices, Tigris River drainage, Physicochemical water parameters
Full-Text [PDF 1208 kb]   (333 Downloads)    
Type of Study: Original Article | Subject: Animal Biology
Received: 2023/11/8 | Revised: 2024/07/6 | Accepted: 2024/05/27 | Published: 2024/06/22 | ePublished: 2024/06/22
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