棉铃虫一种新的实用人工饲料(英文)

本文报道饲养棉铃虫的一种新的含有番茄酱的实用人工饲料。取食这种饲料时，绝大部分幼虫只有5个龄期。因此，幼虫历期大为缩短。在该饲料中加入适量绿豆粉取代麦胚能在一定程度上提高成虫的繁殖力。在连续12代饲养期间，幼虫期存活率在87．5％－98．7％之间，蛹期死亡率不到5％；第11代成虫平均产卵千粒左右，孵化率达86．5％。这些结果表明，经过2年连续饲养后，棉铃虫的活力并没有明显的降低。

A NEW AND PRACTICAL ARTIFICIAL DIET FOR THE COTTON BOLLWORM

A new and practical artificial diet for the cotton bollworm, Helicoverpa armigera (Hubner), containing canned tomato paste has been developed. The developmental duratha of larvae fed on the diet was greatly shortened because most of them only went through 5 stadia before puoation.To add certain amount of mung bean flour to partly substitute for wheat germ in the diet was beneficial to the adult reproduction. During rearing period of 12 successive generations, 87. 5%-98. 7% of the larvae survived and only less than 5% of the pupae failed to emerge. The number of egg laid by the adults of the 11th generation averaged about 1 000/female, with a hatching rate of 86. 5%. These results suggested that the vitality of the cotton bollworm did not decline obviously after reared with the diet for two years.