[Explanation] In recent years, Shoulu snails have been found in paddy fields, wetlands and lakeside zones in the Erhai Lake Basin in Dali, Yunnan. In order to completely eliminate the snails and ensure the safety of the ecosystem, the People’s Government of Dali City issued a notice to fully implement the prevention and control of the snails in the Erhai Basin.
【Explanation】The snails are native to the tropical and subtropical regions of Central America. They have large food intake and strong reproductive capacity, and they are very easy to damage the local wetland ecosystem and agricultural ecosystem. In 2003, they were listed as the first 16 invading foreign species in China. One of the species.
[Commentary] On July 5, in Longxia Denghu Bay, Dali Town, Dali City, Yunnan Province, the staff were busy salvaging the snail and snail eggs. It is reported that the summer is the breeding period of the snail, and there will be many adult snails and snail eggs on the shore, which must be cleaned manually every year.
[Same period] Zhang Sheneng, Director of Erhai Management Office, Dali Town, Dali City, Yunnan Province
Combining the habits and characteristics of Fushouluo, Dali Town has organized a team of more than 80 people to professionally rescue Fushouluo as early as possible. One way of salvage is manual salvage and the other one is salvage by boat. The planned salvage time is about 20 days. Finally, the salvaged amount is collected at the village head, dried, burned, and finally buried and deeply buried.
[Commentary] The Dali Municipal People's Government made it clear that the elimination of Fushoulu will be fully started from July 4th, and the first removal will be completed by the end of November 2020; the scope of removal includes the paddy fields, wetlands and ecological adjustment along the shore of Erhai Lake Storage belts, rivers, etc.; remove the egg snails of S. elegans by manual removal without using chemical agents.
[Same period] Dr. Long Gen from Institute of Hydrobiology, Chinese Academy of Sciences
This longevity snail should be similar to previous years, because it has developed rapidly in the past 10 years. This year depends on the situation. According to our observations and previous years, the situation is much worse.
【Explanation】Fossula snails have strong adaptability, strong reproduction ability, and great difficulty in cleaning up. If you want to "receive" the snails from Erhai Lake, you need to take action. To this end, Dali City has comprehensively carried out the prevention and control of Fushou snails in the Erhai Basin. Those who actively pick Fushou snail eggs will receive a subsidy award at the price of 40 yuan per kg of snail eggs.
Dao Zhinan Hu Yaling Zhang Hui Yang Yang Ma Yuanjuan Yunnan Dali
Editor in charge: [Ye Pan]