Tracking survey after enhancement and releasing of Babylonia lutosa and its effects analysis

Combined with point-survey and productive survey by pot fisheries in 2012—2014，the stock enhancement effect of Babylonia lutosa in Huangqi Bay，Lianjiang county，Fujian province，was studied. The yield of Babylonia lutosa in point-survey by pot fisheries in June 2014 increased 25.1 times than those in 2012（before releasing）；by productive survey，the yield（107.84 kg），the catch per day（2.51 kg） and the catch one pot （120.50 g）of Babylonia lutosa in 2014 increased 2.8 times，2.7 times and 2.4 times than those in 2012（before releasing）；the mean weight of Babylonia lutosa caught in 2013 and 2014 reduced 73.98% and 67.45% than those in 2012（before releasing），and the formation of recruit population has been occurred in the releasing area，some small snails has been added to fishing population.By the two years stock enhancement，the recovery of Babylonia lutosa resource has had significant effect .