文章摘要
刘志伟,钟国辉,王永跃,王兴民,毕可可.龟纹瓢虫生殖系统及卵子发生观察[J].广东农业科学,2021,48(6):101-106
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Reproductive System and Oogenesis of Propylea japonica
  
DOI:10.16768/j.issn.1004-874X.2021.06.014
中文关键词: 龟纹瓢虫  雄性内生殖器  雌性内生殖器  卵母细胞  卵子发生
英文关键词: Propylea japonica  internal reproductive organ of male  internal reproductive organ of female  oocyte  oogenesis
基金项目:广州市科技计划项目(201804020070)
作者单位
刘志伟,钟国辉,王永跃,王兴民,毕可可 1. 广州市林业和园林科学研究院广东 广州 5014052. 龙门县林业局广东 龙门 516800 3. 华南农业大学生物防治教育部工程研究中心广东 广州 510642 
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中文摘要:
      【目的】龟纹瓢虫捕食蚜虫、粉虱、木虱等多种害虫,是农林业重要天敌昆虫。掌握龟纹瓢虫雌 雄内生殖系统结构及卵细胞生成过程,为龟纹瓢虫人工繁育提供理论依据。【方法】采用组织石蜡切片技术和 内部解剖,在光学显微镜下观察龟纹瓢虫雌雄成虫内生殖器及卵子发生过程。【结果】龟纹瓢虫雄性内生殖系 统包括 1 对精巢、1 对雄性附腺、1 对输精管、贮精囊、射精管;雌性内生殖系统包括 1 对卵巢、1 对侧输卵管、 中输卵管、受精囊、生殖腔,每侧卵巢含 11~13 根卵巢管;卵巢管生长区可见 4 粒发育程度不同的卵母细胞, 根据卵黄沉淀情况、滤泡细胞形态变化将卵子发生划分为前期、中期、后期、末期 4 个时期。【结论】卵巢结构、 卵巢管和卵母细胞数量有助于解释龟纹瓢虫产卵量,不适宜的饲养条件可能抑制卵巢发育,进而导致龟纹瓢虫 产卵量发生变化。因此,为实现龟纹瓢虫的规模化应用,人工繁育中应创造最优营养和环境条件以保障产生更 多成熟卵细胞。
英文摘要:
      【Objective】 Propylea japonica is an important natural enemy of agriculture and forestry, which can prey on aphid, whitefly, psyllid and other pests. The study of the reproductive system and oogenesis of P. japonica will provide scientific data support for its artificial breeding.【Method】The reproductive system and oogenesis of the P. japonica were observed with optical microscope by paraffin section technique and anatomical method. 【Result】The male reproductive system include 1 pair of testis, 1 pair of paragonia glands, 1 pair of vas deferens, seminal vesicle and ejaculatory duct. The female reproductive system include 1 pair of ovaries, 1 pair of lateral oviducts, median oviduct, spermatheca and gential chamber. Each side of ovary contains 11-13 ovarioles. According to the yolk precipitation and the morphology change of follicle cells, oogenesis can be divided into prime, middle, transitional and final stage.【Conclusion】The structure of ovary, the numbers of ovarioles and oocytes help to explain the oviposition quantity of P. japonica. Unsuitable rearing conditions may inhibit the development of ovary and lead to the change of oviposition quantity. Therefore, in order to realize the large-scale application of P. japonica, the optimal nutritional and environmental conditions should be created to ensure the production of as many mature eggs as possible.
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