A comparative study of the acute toxicity of 2,4-dichlorophenoxyacetic acid (hedonal), Metamidophos (tamaron) and Monocrotophos (nuvacron) to Tilapia nilotica
Date of Publication
1997
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Biology
College
College of Science
Department/Unit
Biology
Abstract/Summary
Acute toxicity tests were conducted to determine the percent mortality of T. nilotica exposed to different concentrations of 2,4-dichlorophenoxyacetic acid with the brand name of Hedonal (4-10 mg/l), metamidophos with the brand name of Tamaron (2-8 mg/l) and monocrotophos with the brand name of Nuvacron (2-8 mg/l). The 96-hr LC50 of the three pesticides was estimated using the Trimmed Spearman-Karber. A 28.9% mortality was observed in the 4 mg/l, 47.8% for 6 mg/l, 60% for 8 mg/l, and 93.3% in 10 mg/l in the pesticide Hedonal. For Tamaron, 17.8% mortality was observed for 2 mg/1, 38.9% for 4 mg/l, 53.3% for 6 mg/l, and 85.4% for 8 mg/l. For Nuvacron, the average percent mortality obtained were 21.3% for 2 mg/l, 35.7% for 4 mg/l, 51% for 6 mg/l, and 76.7% for 8 mg/l. An average percent mortality of 5.67% was observed in the control. The 96-hr LC50 was 6.218 mg/l for Hedonal, 4.975 mg/l for Nuvacron, and 4.797 mg/l for Tamaron. Tamaron was found to be more toxic to T. nilotica than Nuvacron and Hedonal. In general, as the concentration of the pesticide increased, the mortality of T. nilotica also increased.
Abstract Format
html
Language
English
Format
Accession Number
TU07609
Shelf Location
Archives, The Learning Commons, 12F, Henry Sy Sr. Hall
Physical Description
41 leaves ; Computer print-out.
Keywords
Acute toxicity testing; Fishes--Mortality; Tilapia; Hedonal; Pesticides--Toxicology
Recommended Citation
Katalbas, A. T., Manabat, A. P., & Pangilinan, C. S. (1997). A comparative study of the acute toxicity of 2,4-dichlorophenoxyacetic acid (hedonal), Metamidophos (tamaron) and Monocrotophos (nuvacron) to Tilapia nilotica. Retrieved from https://animorepository.dlsu.edu.ph/etd_bachelors/6150