摘 要：
拟澳洲赤眼蜂(Trichogramma confusum)的体长约0.6mm,腹部长度约0.3mm。雌蜂生殖系统(包括卵巢、生殖腔、受精囊及三种附腺)位于腹部后端,约占腹腔的2/3。成熟的卵巢由两条多滋式的卵巢管组成。两条成熟卵巢的端段细长,扭卷成一条疏松索,基部膨大,内脏贮存大量卵粒。成对的侧输卵管较短,分别开口于生殖腔后方的两侧,中输卵管缺如。受精囊呈梨形,开口于生殖腔后方。雌性生殖系统三种附腺中,第一种附腺是成对的,呈锤状,分别连接于生殖腔前方两侧;第二种附腺,腺体呈球状,其前端以短曲的小管通进膨大的贮腺囊,贮腺囊端部成柄状的弯曲小管,连接于产卵管的基部开口处。第三种附腺的腺体呈棒状,前端为细长的小管,开口于第二种附腺贮腺囊的前端。雄性生殖系统由成对的睪丸,输精管、贮精囊、附腺及单一的射精管组成。蛹的早期到后期至成虫期睾丸的形态结构,各有不同变化。
译 名：
A STUDY ON THE REPRODUCTIVE SYSTEM OF TRICHOGRAMMA CONFUSUM
作 者：
LEE CUI-YING LI SHUN-ZHEN(Research Institute of Entomology, Zhongshan University, Guangzhou)
关键词：
Trichogramma confusum——reproductive system——ultrastructure
摘 要：
The reproductive system of the female Trichogramma confusum occupies about the posterior two-thirds of the abdomen and comprises of paired ovaries, paired lateral oviducts, the genital chamber, the spermatheca, and the accessory glands. The fully developed ovaries consist of two ovarioles. The proximal portion of each ovariole is a relatively large pear-shaped mass of egg pouch. It is generally estimated that each ovariole contains around 150 eggs before oviposition. and the maximum number may reach 197. The anterior portion of an ovariole tapers to a long and slender fube-iike zone of growth, the vitellarium. The two long tubes coil up and unite as a single suspensory strand which extands to the anierfor part of the abdominal cavity. The paired lateral oviducts converge posteriorly from the ovaries to join immaliately into the lateral part of the genital Chamber and there are two rounded accessory glands which open iato its lateral sides, A sac-like spermatheca opens into the median part of the genital chamber. Besides, there are two other accesory glands one of them is sac-like and consists of a number of large glandular cells with a short and small duct, opening anteriorly into a large membranous sac, the glandular reservoir, which is filled with liquid substance. The distal orifice of the reservoir opens into the basal part of the ovipositor. The second one is a long and slender tube ended with glandular enlargement, and its orifice is open to the distal part of the glandular reservoir .of the sac-like gland through a short duct.Ultrastructural examination of the reservotr revealed that its wall is comprised of a layer of pavement epithelial cells and a basement membrane. The cells are dominated by flat nuclei and scattered mitochondria. There are some scattered muscle fibers attaching to the surface of basement membrane at frequent intervals. The secretory cell is dominated by rough endoplasmic reticula and numerous mitochondria around the nuclear membrane. The Golgi bodies and microtubules often scatter throughout the cytoplasm of secretory cells.The reproductive organs of the male adult include a pair of translucent testes, the ducts or vasa deferentia which partly enlarge as vesiculae seminales, and a pair of large sac-like accessory glands united at their proximal ends. The proximal end of the ejaculatory duct opens into the penis lumen.The size and shape of testes are more or less different in different developmental stages, In the early pupal stage, each testis is club-shaped, full of spermatogonia within its cavity and becomes a large pyramidal body in late pupal stage and full of sperm bundles. Almost all spermatozoa travel down to vesiculae seminales after emergence, and the testes are reduced 10 small flat rhomboid bodies.
