摘要
松材线虫病在广东深圳发生严重。25℃,松材线虫从产卵到二龄幼虫孵化的胚胎发育为30h,在盘多毛孢菌上培养,从二龄幼虫发育到二龄幼虫需要5天,幼虫通过4次脱皮发育到成虫,第1次在卵内.详细描述了胚胎发育和胚后发育各阶段的过程和形态变化.松材线虫各龄期的区分以热杀时虫体形态、体长作为依据,二龄幼虫、三龄幼虫、雄史分别为“L”、“I”、“J”形,四龄幼虫和雌虫为开阔“C”形,但雌虫生殖器官发育成熟。二龄、三龄、四龄、雄虫的体长分界值依次为359.4μm,444.9μm、574.5μm.观察生殖腺位置、结构和发育程度也是重要依据。
The destructive Pine Wilt Disease was found occurring in Shenzhea China. Studies on the developmental stages of Bursaphelenchus xylophilus indicate that the life cycle was completed from egg to egg in 5 days on Pestolotia sp. at 25℃. through four molts, the first of which occurred within the egg. The average time required from egg-laying to hatching was 30 hours in water at 25℃.Using the shape of heat-killed nematode as the initial guide to the identification of the different stages of B. xylophilus. a relationship between stage and body length, genigal primordia has been established; this enabled individuals to be allocated to their stage with relative ease. Morphology, embryonic and post-embryonic development, the egg and larval stages are described and figured.
出处
《华南农业大学学报》
CAS
CSCD
1993年第2期78-83,共6页
Journal of South China Agricultural University
关键词
松材线虫
胚胎发育
生活史
Bursaphelenchus xylophilus
Embryology
Life cycle
Seperation of stages
