نوع مقاله : مقاله پژوهشی
نویسندگان
موسسه تحقیقات جنگلها و مراتع، تهران، ص. پ. 116-13185
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Biology of poplar lace bug was studied by two different methods using pot-grown seedlings of poplar and fresh leaves placed on wet sponge, inside rearing jars in controlled conditions Biological study on poplar seedlings showed that pre-oviposition period of females was 3.33 days. Average number of eggs laid per female was 69.62. Incubation period of eggs was 9.46+l.29 days. Total nymphal stage of poplar lace bugwas 15.17+1.66 days and forthe 1",2oo,3'o,4* and 5- insiar-s were recorded as 2.75+0.42, 2.08+0.2, 2.92+L 16, 2.58+0.58 and 4.83+0.88 days, respectively. Longevity of adult insect was 13.19+11.3 days. The results in controlled laboratory conditions demonstrated that, incubation period of eggs was 8.31+1.02 days. The I't, 2n0,3'd,4ft and 56 nymphal initars were 2+0, 2.39+0.74,2+0.43,2.78+0.44 and 2.83+0.56 days and iotat nymphal stages was 12+0.83 days, respectively. Longevity of adultinsects was 12.28+8.79 daYs. The results revealed that overwintering adults were able to feed and oviposite in suitable conditions of laboratory (25"c and 50% RH.) without passing through any obligatory diapause.
کلیدواژهها [English]