Effects of Some Pesticides on Development of Ascaris suum Eggs.
10.3347/kjp.2014.52.1.111
- Author:
Yong Man YU
1
;
Jin Won KIM
;
Won Seok NA
;
Young Nam YOUN
;
In Wook CHOI
;
Young Ha LEE
Author Information
1. Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 305-764, Korea.
- Publication Type:Brief Communication ; Research Support, Non-U.S. Gov't
- Keywords:
Ascaris suum;
egg;
pesticide;
larval development;
embryogenesis
- MeSH:
Animals;
Ascaris suum/*drug effects/growth & development;
Female;
Larva/drug effects/growth & development;
Microscopy;
Pesticides/*pharmacology;
Survival Analysis;
Temperature;
Time;
Zygote/*drug effects/growth & development
- From:The Korean Journal of Parasitology
2014;52(1):111-115
- CountryRepublic of Korea
- Language:English
-
Abstract:
To evaluate the effects of pesticides to parasite eggs, Ascaris suum eggs were incubated with 5 different pesticides (1:1,500-1:2,000 dilutions of 2% emamectin benzoate, 5% spinetoram, 5% indoxacarb, 1% deltamethrin, and 5% flufenoxuron; all v/v) at 20degrees C for 6 weeks, and microscopically evaluated the egg survival and development on a weekly basis. The survival rate of A. suum eggs incubated in normal saline (control eggs) was 90+/-3% at 6 weeks. However, the survival rates of eggs treated with pesticides were 75-85% at this time, thus significantly lower than the control value. Larval development in control eggs commenced at 3 weeks, and 73+/-3% of eggs had internal larvae at 6 weeks. Larvae were evident in pesticide-treated eggs at 3-4 weeks, and the proportions of eggs carrying larvae at 6 weeks (36+/-3%-54+/-3%) were significantly lower than that of the control group. Thus, pesticides tested at levels similar to those used in agricultural practices exhibited low-level ovicidal activity and delayed embryogenesis of A. suum eggs, although some differences were evident among the tested pesticides.
