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Effects of Toxicity of Ammonia Nitrogen Derived from Swine Wastewater on Gill Tissues of Pontius gonionotus |
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| รหัสดีโอไอ | |
| Creator | Sunantha Laowansiri |
| Title | Effects of Toxicity of Ammonia Nitrogen Derived from Swine Wastewater on Gill Tissues of Pontius gonionotus |
| Contributor | Sunantha Laowansiri, Naiyana Senasri |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2569 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 19 |
| Journal No. | 1 |
| Page no. | 65-75 |
| Keyword | Gill tissues, Pontius gonionotus, Swine wastewater, Toxicity of ammonia nitrogen |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | This study aimed to investigate the toxic effects of ammonia nitrogen derived from swine wastewater on the gill tissues of Puntius gonionotus. Juvenile Puntius gonionotus aged three months were exposed to ammonia concentrations of 0.90, 1.29, 1.83, 2.50, and 3.33 mg/L, along with a control group, over a 96-hour period. Ten Puntius gonionotus were placed in each tank, and the experiment was conducted in triplicate. The lethal concentration (LC₅₀) was calculated to be 1.46 mg/L using probit analysis, with a 95% confidence interval of 1.359-1.578 mg/L. Significant mortality differences were observed at exposure times of 6 hours and beyond (p<0.05), while no significant effects were found at 3 hours or at lower ammonia concentrations(0.00 and 0.90 mg/L). Behavioral changes, such as increased surfacing, erratic swimming,heightened opercular movement, and loss of balance, were observed at higher concentrations.Histological examination revealed progressive gill damage, with indistinct filaments and gillstructure deterioration. Exposure to ammonia concentrations of 2.50 and 3.33 mg/L resultedin severe gill damage, with only the gill bones remaining visible. The study concludes thatammonia in swine wastewater can significantly impair fish health, both physiologically and behaviorally, and highlights the need for effective wastewater management in aquaculture andsurrounding environments. |
