[Luring effect of the fermented Laminaria japonica to Oncomelania hupensis].
OBJECTIVE
To study the attraction effect of the food attractants on Oncomelania hupensis.


METHODS
Oncomelania snail food was prepared with the fermented kelp (Laminaria japonica) mixed with corn starch. Snails were fed with the food and kept for 12, 24, 36, and 48 h at 15, 25, 35 degrees C respectively. Meanwhile, snail-killing effect was tested by granules containing jack-in-the-pulpit (Arisama heterophyllum) with or without the fermented kelp under the condition of 25 degrees C, 30% or 60% soil humidity.


RESULTS
The snail-attracting rate of the fermented kelp was affected by the temperature, highest under 25 degrees C and lowest under 35 degrees C at any time point, with a rate of 80.3% in 48 h at 25 degrees C which was higher than that of the control (17.0%) (P<0.01). The snail mortality rate in the group using jack-in-the-pulpit with fermented kelp (85.3%) was higher than that of the group without fermented kelp (26.8%) (P<0.05). The mortality under 60% of soil humidity was higher than that under 30% humidity (P<0.01).


CONCLUSIONS
The fermented kelp shows a strong luring effect to the Oncomelania snails.
Ma
An-ning
AN
School of Resources and Environment, Hubei University, Wuhan 430062, China. maanning@hubu.edu.cn
Ni
Hong
H
Wang
Wan-xian
WX
Zhang
Yun
Y
Geng
Peng
P
D000818:Animals; D005285:Fermentation; D007795:Laminaria / Q000737:chemistry*; D008975:Molluscacides / Q000494:pharmacology*; D012549:Schistosoma japonicum; D012908:Snails / Q000187:drug effects* / Q000469:parasitology
D008975:Molluscacides