西北林学院学报2018，Vol.33Issue(3)：153-157,185,6.DOI:10.3969/j.issn.1001-7461.2018.03.23
固沙林新害虫柠条瘿潜蝇(Hexomyza caraganae)生物学特性研究
Bionomics of Newly Discovered Pest Hexomyza caraganae on Sand-fixation Forest
摘要
Abstract
Hexomyza caraganae is a newly discovered pest on the sand-fixation tree species Caragana korshinskii in Longxi,Gansu Province.The morphological characteristics,the developmental duration,annual life cycle and other biological characteristics of the insect were mainly identified.Uner indoor conditions,i.e.temperature 25℃,50％ relative humidity (RH),light cycle 15L:9D,the annual life cycle of the Hexomyza caraganae,the eclosion habits,male and female sex ratio,adult life span,mating habits,oviposition,as well as larvae feeding habits and pupation habits of the Hexomyza caraganae were observed.In Longxi,Gansu Province,the Hexomyza caraganae occurred one generation a year,and overwintered with 2-instar larvae in the mine.In late march until early April of the following year,the larvae molted into 3-instars.In early April,the middle ten days of the April,the 3-instar began to pupate.The adult stage was in late April to May,adult began to mate 2-24 hours after eclosion,and lay eggs 12-24 hours after mating.Egg stage lasted from mid-April to mid-June.The developmental duration of the eggs,larvae,pupae,and adults of H.caraganaein the indoor conditions were 36 d,256 d,19 d and 6 d,respectively,and that of a complete generation was 320 d.The hatching,pupation,and the eclosion rates were 55％,61％ and 70％,respectively.The eclosion tended to occur in the morning at 6:00-12:00,after emergence and finishing wings,they started flying.The sex ratio of the adult male and female was 7:4.The life expectancy of the adult female was 5.6 days,male life expectancy was 6.1 days.Adult mating always occurred in the morning and lasted 25-35 min;12 to 24 hours after mating,they began to lay eggs,when the fly laying eggs,scraped the epidermis of the host plant,and lay eggs around the wet area of leaf base bud subcutaneous.1-Instars mainly fed phloem of Caragana korshinskii,2-instars began to feed from phloem to xylem,and 3-instars ate a lot and evacuated a lot,and digged a emergence hole at the upper or lower end of the emergence hole.The annual life cycle and the pest occurrence regularity of the H.caraganae were understood in the fieldsIts biological characteristics were revealed,such as the adult sex ratio,life span,mode of laying eggs and the feeding habit of larvae.These results would provide the basic information for the artificial breeding and scientific prevention and control of the pests.关键词
柠条瘿潜蝇/形态特征/生物学特性/年生活史Key words
Hexomyza caraganae/morphological characteristics/biological characteristics/annual life cycle分类
农业科技引用本文复制引用
程志强,张超逸,褚梦颖,刘广纯..固沙林新害虫柠条瘿潜蝇(Hexomyza caraganae)生物学特性研究[J].西北林学院学报,2018,33(3):153-157,185,6.基金项目
国家自然科学基金:中国蚤蝇科分类订正及系统发育研究(31372245) （31372245）
中国裂蚤蝇亚科系统分类及生物地理学研究(31071965). （31071965）
