Molluscicidal effect of BYW emulsion, a biological modification reagent
- VernacularTitle:生物调节剂BYW乳剂灭螺效果观察
- Author:
Guifen YANG
;
Zhi'En GUO
;
Chushuang ZHANG
;
Tingxian LU
;
Lu JIN
;
Meng XIA
;
- Publication Type:Journal Article
- Keywords:
Biology;
Modification reagent;
BYW emulsion;
Molluscicidal effect;
Oncomelania snail
- From:
Chinese Journal of Schistosomiasis Control
1989;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the molluscicidal effect of BYW emulsion on Oncomelania snails. Methods The immersion and spraying methods were used in this study both in lab and field trials. Results The mortality of snails was 86.7% when the snails were immersed in 10.0 mg/L BYW emulsion solutions for 72 hours at room temperature 20 ℃, and LC_ 50 was 2.28 mg/L . However, the mortality of snails increased to 96.7%-100.0% when the snails were immersed in 1.25-10.00 mg/L BYW emulsion solutions for 48 hours at 25 ℃. In the field, 93.3%-100.0% snails died after being immersed in 0.5-2.0 mg/L BYW emulsion solutions for 4 days. In the spraying test, 5, 7, 15 days after spraying with 2.0 g/m~2 BYW emulsion, the mortalities of snails were 67.5%, 68.1% and 92.5% respectively. Conclusion BYW emulsion has a good molluscicidal effect but low toxicity to other animals.
