| Author | Somchai Ponlasit |
| Call Number | AIT Thesis no. AQ-00-24 |
| Subject(s) | Nile tilapia
|
| Note | A research study submitted in partial fulfilment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AQ-00-24 |
| Abstract | This study was conducted to determine LCso to un-ionized ammonia nitrogen concentration for two strains of Nile tilapia (Oreochromis niloticus): Genetically Improved Farmed Tilapia (GIFT) and Chitralada strains. Fish fry of mean standard length 2.25 ±20 cm were exposed for 96 hours for concentration ofun-ionized ammonia nitrogen (0, 0.49, 0.99, 1.99, 2.99, and 3.99 mg/L). The 96-hour mean LCso of the two strains was not significantly different (P>0.05). Fish mortality was observed for both the strains starting after 12 hours of exposure initially for the high level ofun-ionized ammonia nitrogen concentration. The temperature of water ranged from 22.3 to 22.4 C and pH from 7.8 to 8.1. The LCso of un-ionized ammonia nitrogen and its 95% confidence intervals were calculated for 12, 24, 48 and 96-hour exposure for each treatment. The 96-hour LC50 was 2.24 mg/L of un-ionized ammonia nitrogen for Chitralada strain and 2.58 mg/L for GIFT strain, respectively |
| Year | 2000 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AQ-00-24 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Aquaculture and Aquatic Resources Management (AQ) |
| Chairperson(s) | Yakupitiyage, Amararatne; |
| Examination Committee(s) | Lin, Chang K wei;Yi, Yang; |
| Scholarship Donor(s) | The Royal Netherlands Government; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2000 |