Effect of the snail settling pool on preventing the spread of oncomelania hupensis in Qimen Village of Lezhi County in Sichuan Province
Objective To evaluate the effect of the snail settling pool on the prevention of snail spread in Lezhi County,so as to provide scientific basis for the design and construction of snail sedimentation pond in hilly schistosomiasis area.Methods The snail settling pool in Qimen Village,Labor Town,Lezhi County was selected as the research site.The distribution of oncomelania snails in the historical and adjacent environments upstream of the snail settling pool was investigated in October 2022.A certain proportion of the mud in the snail settling pool was extracted.After washing,the mud was used to identify oncomelania snails and other snails.The snail diffusion in the ditches downstream of the snail settling pool and the surrounding environment was investigated.Results The snail was investigated in the upstream environment of the snail settling pool,and the investigation area was 8 165.50 square meters.The number of investigation frames was 153,and the number of frames with snail was 23;93 snail was captured,and the snailsdensity was 0.61/0.11 m2,but no positive snails were found.In the snail settling pool,14 oncomelania snails were found and the oncomelania snails were all dead.643 other snails were found,containing 12 other living snails and 631 dead snails.3 980.00 square meters of ditch and adjacent field were investigated,the number of investigation frames were 70,and no snails were found.Conclusions The effect of snail settling is positive in snail settling pool of Lezhi County.It is suggested to explore the design scheme of snail settling pool in hilly area,to make overall planning for the construction of snail settling pool to produce comprehensive benefits,to clear the sediment regularly,and to put the mud near the water outlet and the water inlet at the bottom,aiming to prevent the snail from spreading.
schistosomiasisoncomelania snailsunken snail pondLezhi County
万方数据
维普
