Acute toxicity and bioconcentration of pyrimorph in zebrafish, Brachydanio rerio
- Authors
- Zhao, C., Liu, B., Wang, J., Li, N., Qin, Z., and Qiu, L.
- ID
- ZDB-PUB-110524-21
- Date
- 2011
- Source
- Pest management science 67(9): 1178-83 (Journal)
- Registered Authors
- Li, Nan, Wang, Jing
- Keywords
- pyrimorph, zebrafish, acute toxicity, bioconcentration, QuEChERS
- MeSH Terms
-
- Acrylamides/toxicity*
- Animals
- Biological Assay/methods*
- China
- Fungicides, Industrial/toxicity*
- Lethal Dose 50
- Morpholines/toxicity*
- Zebrafish*/growth & development
- PubMed
- 21567892 Full text @ Pest Manag. Sci.
RESULTS: When tested by the semi-static method, the 48, 72 and 96 h median lethal concentration (LC50) values of pyrimorph to zebrafish were 24.33, 22.61 and 19.79 mg L-1 respectively. To study the bioconcentration of pyrimorph in zebrafish, the fish were exposed to sublethal concentrations of pyrimorph (2.00 and 0.25 mg L-1) for 192 h, a modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method was applied to extract pyrimorph from samples and the residues of pyrimorph in the water and fish were determined by high-performance liquid chromatography (HPLC). The highest bioconcentration factor (BCF) of pyrimorph in the fish was 1.07 × 102 (144 h) and 23.1 (96 h) after exposure to 2.00 and 0.25 mg L-1 of pyrimorph respectively.
CONCLUSIONS: The novel fungicide pyrimorph has low toxicity to zebrafish; however, it showed medium BCF to zebrafish. Therefore, more attention should be paid to the residue of pyrimorph in fish, as well as to its long-term ecological effects.