【摘要】 用83-28号半合成饲料配方,在实验室连续大量繁殖小菜蛾已获得成功。在温度23±1℃,相对湿度60-70％条件下,初孵幼虫至成虫的历期为14.7天(幼虫10.2天,蛹4.5天),得蛹率为54.1％,蛹重平均达101.8毫克/20头,羽化率为95.0％。成虫行为正常,雌虫平均寿命15.0天,雄虫为21.5天。每雌产卵量104粒(89—199粒)。该饲料成本低廉,配制简单,饲养管理方便,在22×15×5厘米的塑料饲养盒中1次平均可得蛹1669头。已在实验室连续饲养6代。更多还原

【Abstract】 A technique was succeeded for laboratory mass-rearing of the diamondback moth, Plutella xylostella(L.)(Lepidoptera: Plutellidae, on semi-synthetic diet(83-#28). This diet is cheaper, the method of preparation and application is simpler, and more convenient. An average of 1669 pupae were obtained in a plastic box(22×15×5cm) in each rearing period. Under 23±1℃,60-70% R. H., the developmental period from the larva to the adult stage was 14.7 days(larva:10.2 days;pupa:4.5 days), the rate of pupation is 54.1%, pupae weight was 101.8mg ( 20 pupae ), adult emergence was 95.0% , the behavior of adult was normal, the longevity of the adult averaged 18.0 days(♀15.0, ♂21.5 days) ,and the females fed on the diet laid 104 eggs in average(89-199).The diamondback moth has been reared on this artificial diet for 6 broods and still maintaining its normal biological charasteristics.更多还原