Method for rapidly separating larvae and pupas

• Main Authors: DAI JIANQING, MENG XIANG, CHEN DASONG, OUYANG GECHENG
• Format: Patent
• Language: Chinese; English
• Published: 13.12.2019
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; NEW BREEDS OF ANIMALS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING; TRAPPING

The invention discloses a method for rapidly separating larvae and pupas. The method comprises the steps that mixtures of mosquito larvae and pupas are poured into iced water, pupas float over the water surface, larvae are sunk into the iced water, and pupas at the upper layer and larvae at the lower layer are fished out separately to obtain separated pupas and larvae. The inventor finds that whenthe mosquito larvae and pupas are put into the iced water, larvae automatically sink immediately when being frozen, and pupas can float over the water surface; after the pupas are fished out, and when the temperature of the iced water is increased to the normal temperature (25 DEG C), larvae can automatically float up. Accordingly, mosquito larvae and pupas can be effectively separated, the mosquito larva and pupa separating efficiency is improved, time and labor are saved, and pupas are not injured. 本发明公开了一种快速分离蚊虫蛹的方法。它是将蚊子的幼虫和蛹的混合物倒入到冰水中，蛹漂浮于水面，幼虫沉于冰水中，分别捞起上层的蛹和下层的幼虫，得到分离的蛹和幼虫。本发明人发现，当蚊子的幼虫和蛹放于冰水中，幼虫由于被冰冻一瞬间会自动下沉，而