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在实验饲养中华按蚊过程中,发现蚊幼虫密度影响蚊虫的生长发育。为此,我们采用相同的温度、营养和水体等条件,观察蚊幼虫密度对其蛹化、羽化和成蚊的影响。 材料和方法 选用实验驯化的上海株中华按蚊。将雌蚊在24h内产出的卵置于6~8℃冰箱内24h后,予以孵化。随机取24h内孵出的一龄幼虫,按不同实验组,每盆放置幼虫75、150、300和600条,每组2~3盆。搪瓷盆内水表面为15cm直径(幼虫密度分别约为0.42、0.85、1.69和3.39条/cm~2),水深3cm。室温控制在28±1℃,相对湿度为70~80%。按常规方法饲养:
In the process of feeding Anopheles sinensis, it was found that mosquito larva density affected the growth and development of mosquitoes. To this end, we used the same conditions of temperature, nutrition and water to observe the impact of mosquito larvae density on their pupal, eclosion and adult mosquitoes. Materials and Methods An acclimatized Shanghai strain Anopheles sinensis was selected. The eggs produced by female mosquitoes within 24h were placed in a refrigerator at 6 ~ 8 ℃ for 24h and then hatched. Randomly take the first instar larvae hatch within 24h, according to different experimental groups, laying larvae per pot 75,150,300 and 600, each 2 to 3 pots. The water surface of the enamel basin is 15 cm in diameter (larval density of about 0.42,0.85,1.69 and 3.39 / cm ~ 2, respectively, water depth 3cm. Room temperature control at 28 ± 1 ℃, relative humidity of 70 ~ 80%. According to the conventional method of feeding: