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  1. University of Yangon
  2. Department of Zoology

Species Richness and Metal Concentrations in Some fishes and their Environs of Ayeyarwady River Segment, Salay Township, Magway Region

http://hdl.handle.net/20.500.12678/0000006363
http://hdl.handle.net/20.500.12678/0000006363
3049d518-0ca8-474b-8234-8686aa8b32d2
362fefb1-eb97-44e5-82e4-8a204cfdb1ee
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Title
Title Species Richness and Metal Concentrations in Some fishes and their Environs of Ayeyarwady River Segment, Salay Township, Magway Region
Language en
Publication date 2019
Authors
Cho Cho Thin
Myin Zu Min
Min Thu Aung
Description
A total of 44 fish species belonging to 19 families of six orders including nine herbivores, 18 carnivores and 13 omnivores were recorded from three study sites of Ayeyarwady River segment, Salay region, July 2013 to February 2014. The results of the water quality revealed the pH, conductivity and calcium hardness were within the desirable limits for fish although that of total hardness in all study sites and calcium hardness in study site I were markedly higher than the permissible limits. The toxic metal cadmium concentration was 13.45 ppm in sediment and the ranged from 0.215 – 0.237 ppm in water. Mean values of essential elements in sediment and water of study area were analyzed. Na concentration in sediment was lower than that of water although Ca, Mg and K concentrations in sediments were higher than that of the water in present study area. Na concentration of omnivorous (Salmostoma sardinella and Mastacembellus dayi) and carnivorous (Notopterus notopterus and Mystus cavasius) fishes was higher than that of herbivorous fish (Rhinomugil corsula). The concentration of Ca in carnivorous fish was the highest followed by omnivorous and herbivorous fishes. Mean values of essential elements Mg in herbivorous fish was lower than that of carnivorous and omnivorous fishes in present study. K concentrations of all study fishes were nearly the same.
Keywords
species richness, water quality, toxic and essential metals
Journal articles
University of Yangon Research Journal
478-490
Vol.9, No.2
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