›› 1994, Vol. 37 ›› Issue (3): 317-322.

• 研究论文 • 上一篇    下一篇

稻虱跗煽的个体发生研究:卵的形成和胚胎发育

顾秀慧 贝亚维 高春先   

  • 出版日期:1994-08-20 发布日期:1994-08-20

STUDIES ON THE ON ONTOGENY OF ELENCHINUSJAPONICUS (ELENCHIDAE:STREPSIPTERA): EGG FORMATION AND EMBRYONIC DEVELOPMENT

GU XIU-HUI BEI YA-WEI GAO CHUN-XIAN   

  • Online:1994-08-20 Published:1994-08-20

摘要: 捻翅目昆虫是胎生的,胚胎发育和孵化均在母体血腔内进行。稻虱跗蝇Elenchinus japonicus属捻翅目,跗煽科,寄生于白背稻虱、褐稻虱和灰稻虱。本文报道稻虱跗煽卵的形成各阶段:1)雌虫体内无典型的卵巢,所有卵在母体体腔内同步发育和成熟。最早发现的原卵是包囊干细胞,在雌幼虫血腔内。2)每个包囊细胞内含256个姐妹细胞,其中有一个细胞分化成卵母细胞,其余的成为营养细胞。3)成熟卵为椭圆形,大小为95-100X40-50μm。其胚胎发育过程按顺序包括:卵裂、胎盘形成、胚带分节、附肢形成和胚胎背合等阶段。稻虱跗蛔行单胚生殖。

关键词: 捻翅目, 稻虱跗蝙, 卵的形成, 胚胎发育

Abstract: Strepsiptera are very specialized insects which carry out a unique type of viviparity with egg formation and embryonic development taking place within haemocoel of the female. Elenchinus japonicus belongs to Elenchidae, Strepsiptera, and parasitizes the planthoppers Sogatella furcifera, Nilaparvata lugens and Laodelphax striatellus. In this work the stages of egg formation and embryonic development in S.Furcifera were carefully observed microscopically. The female insect lacks typicalovaries; the eggs develop and mature synchronically within the adipose tissue near the body wall. At the beginning, the primary oocytes are derived from the cystoblasts each of which consists of 256 sibling cells. One of these cells differentiates into the oocyte and the rest become the nurse cells. The mature egg is ellipticaland measures 75-100×40-50μm. It undergoes cleavage, blastoderm formation,segmentation of germ band, formation of appendages and dorsal enclosure to form the mature embryo monoembryonically.

Key words: Strepsiptera——Elenchinus japonicus——egg formation——embr- yonic development