摘要
【目的】比较大豆蚜Aphis glycines有翅型和无翅型个体的卵巢发育,为从生理生化角度研究蚜虫翅型分化发生的繁殖适应性提供依据。【方法】在卵巢形态显微镜观察基础上,比较有翅型和无翅型大豆蚜卵巢小管数量、胚胎总数量、成熟胚胎数量以及卵巢小管中最大胚胎体积及其发育速率。【结果】有翅型和无翅型大豆蚜的3龄和4龄若蚜以及成蚜均有2个卵巢/雌,大多数蚜虫每个卵巢包含4条卵巢小管,可见一个卵巢包含5条卵巢小管的现象。有翅型和无翅型个体卵巢中胚胎总数量和成熟胚胎数量以及最大胚胎体积随发育时间增加均显著增大,但有翅型个体胚胎总数量和成熟胚胎数量以及最大胚胎体积均显著小于同一发育阶段无翅型个体。有翅型和无翅型的3龄和4龄若蚜以及成蚜卵巢中胚胎总数量与后足胫节长度均呈显著正相关关系。有翅型和无翅型大豆蚜卵巢小管中最大胚胎体积随发育时间均呈指数增长,但有翅型个体最大胚胎体积显著小于无翅型个体。【结论】有翅型大豆蚜相比于无翅型个体存在卵巢发育延迟现象,卵巢发育程度的差异可能与翅的发育相关。
【Aim】 The ovarian development of alate and apterous morphs of the soybean aphid, Aphis glycines was compared to provide a biochemical basis for the reproductive fitness of wing morph differentiation. 【Methods】 Based on the ovarian morphology observed under microscope, the number of ovarioles, total number of embryos, number of mature embryos, and the volume of the largest embryo in each ovariole of A. glycines were compared for alate and apterous morphs. 【Results】 There are two ovaries per female of alate and apterous morphs of A. glycines at the 3 rd and 4 th instar nymphal and adult stages. Most aphids contain four ovarioles per ovary, and only one ovary was found to contain five. The total number of embryos and number of mature embryos and the volume of the largest embryo increases significantly with increasing developmental period of both wing morphs. However, the total number of embryos and number of mature embryos are significantly lower, and the volume of the largest embryo is significantly smaller in alate than in apterous individuals at the same stage, respectively. There is a significantly positive relationship between the total number of embryos and the hind tibia length of alate and apterous morphs of A. glycines at the 3 rd and 4 th instar nymphal and adult stages. Alate and apterous aphids show an exponential growth in the volume of the largest embryo. However, the largest embryo of alate aphids is distinctly smaller than that of apterous aphids. 【Conclusions】 Alate aphids of A. glycines display a delay in the ovarian development as compared to apterous aphids, and the difference in ovarian development degree between them may be related to wing development.
作者
许向利
仵均祥
XU Xiang-Li;WU Jun-Xiang(Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau,Ministry of Agriculture,Key Laboratory of Plant Protection Resources and Pest Management,Ministry of Education,Northwest A&F University,Yangling,Shaanxi 712100,China)
出处
《昆虫学报》
CAS
CSCD
北大核心
2020年第4期433-438,共6页
Acta Entomologica Sinica
基金
国家重点研发计划项目(2018YD0201000)。
关键词
大豆蚜
有翅型
无翅型
卵巢发育
繁殖潜能
Aphis glycines
alate morph
apterous morph
ovarian development
reproductive potential
