Evaluation of heavy metals (Zinc;Lead and Copper) toxicities in female climbing perch (Anabas testudineus) bloch (1792)
<p>The purpose of this study was to evaluate effect of heavy metals on the blood</p><p>parameters, biochemical indicators, and histological changes in female Anabas</p><p>testudineus) Bloch (1792). A total number of 200 female A....
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| Format: | thesis |
| Language: | eng |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://ir.upsi.edu.my/detailsg.php?det=7355 |
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| Summary: | <p>The purpose of this study was to evaluate effect of heavy metals on the blood</p><p>parameters, biochemical indicators, and histological changes in female Anabas</p><p>testudineus) Bloch (1792). A total number of 200 female A. testudineus fish were</p><p>exposed to (zinc chloride 2mg/L, lead chloride 2 mg/L, and copper chloride1.5 mg/L)</p><p>for 35 days. The numbers of red and white blood cells were counted by using</p><p>hemocytometer, while blood glucose and liver enzymes were measured by</p><p>spectrophotometer. The concentrations of heavy metals in the muscles were determined</p><p>by using Atomic Absorption Spectrophotometer. The tissues of ovary, liver, gut, and</p><p>gills were collected and processed for histological analyses. The results of this study</p><p>showed that exposure to these heavy metals led to a significant decreased (p <0.05) in</p><p>the number of red blood cells, the weight of ovaries, and liver compared to the control</p><p>group. However, there were a significant increments (p <0.05) observed on the number</p><p>of white blood cells, blood glucose level, and liver enzymes; Alanine Aminotransferase</p><p>(ALT), Aspartate Transaminase (AST), and Alkaline Phosphatase (ALP) as compared</p><p>to the control group. A significant increased (p <0.05) in the concentration of the heavy</p><p>metals was identified, and the concentration of heavy metals in the muscle tissues was</p><p>in the following order; Zn >Cu >Pb. Histology in all tissues examined assessment</p><p>showed exhibited cellular bulging, swelling, and necrosis. As a conclusion, heavy</p><p>metals exposure to female A. testudineus shows there are negative impacts on the blood</p><p>parameters, blood glucose and liver enzymes. In addition, histological study on the</p><p>selected organs ovaries, liver, intestine, and gills also negatively affected. This study</p><p>implicates that heavy metals contributed negative effect on A. testiduneus physiology</p><p>and information from this study can be further used to evaluate and propose solution to</p><p>manage negative impact of heavy metals on fish.</p> |
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