摘要
根据我国病虫测报工作中害虫卵巢分级的实践及基层站点的可操作性，提出一套稻水象甲的卵巢发育程度的分级标准，即分为发育前期（０级）、卵黄沉积前期（Ⅰ级）、卵黄沉积期（Ⅱ级）、产卵盛期（Ⅲ级）、产卵末期（Ⅳ级）和产后衰老期（Ⅴ级）六个级别。据此结合飞行肌和脂肪体的发育程度。
Grading scale for the ovarian
development of rice water weevil (RWW), Lissorhoptrus oryzophilus Kuschel, was presented
in the light of the practices for pest forecast in China and the operationability in grass roots
extension station. According to the morphological changes in ovarian development, their
anatomical criteria were classified into six grades, i.e. 0, no oocyte; Ⅰ, previtellogenic; Ⅱ,
gravid (vitellogenic to chorionated eggs); Ⅲ, ovipositing (a number of chorionated eggs are
stored in the egg calyxes); Ⅳ, late egg laying (the early and middle degeneration); Ⅴ,
postoviposition senescence (the late degeneration). These criteria were applied to characterize
the field population of RWW and to appraise the suppression effect of some insecticides (say
Imidacloprid) that cause the ovarian development retardation and egg laying dysfunction.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1999年第2期109-113,共5页
Chinese Journal of Rice Science
基金
浙江省科委重点项目
关键词
稻水象甲
卵巢发育
分级标准
种群性质
grading criteria
Lissorhoptrus oryzophilus
ovarian development
population
characteristics
