Szklarzewicz Teresa, Jankowska Władysława, Lukasiewicz Kinga, Szymańska Beata
Department of Systematic Zoology, Institute of Zoology, Jagiellonian University, R. Ingardena 6, PL-30060 Kraków, Poland.
Arthropod Struct Dev. 2007 Jun;36(2):199-207. doi: 10.1016/j.asd.2006.09.001. Epub 2007 Jan 23.
Ovary organization in representatives of two families of Fulgoromorpha, Cixiidae (Cixius nervosus) and Delphacidae (Javesella pellucida and Conomelus anceps), was examined by light and transmission electron microscopy. Ovaries of studied fulgoromorphans consist of telotrophic ovarioles. From apex to base individual ovarioles have four well defined regions: a terminal filament, tropharium (trophic chamber), vitellarium and pedicel (ovariolar stalk). Tropharia are not differentiated into distinct zones and consist of syncytial lobes containing multiple trophocyte nuclei embedded in a common cytoplasm. Lobes are radially arranged around a branched, cell-free trophic core. Early previtellogenic (arrested) oocytes and prefollicular cells are located at the base of the tropharium. The vitellarium houses linearly arranged developing oocytes each of which is connected to the trophic core by a broad nutritive cord. Each oocyte is surrounded by a single layer of follicular cells that become binucleate at the beginning of vitellogenesis.
通过光学显微镜和透射电子显微镜对蜡蝉亚目两个科（象蜡蝉科的神经象蜡蝉和飞虱科的透明二叉飞虱及黑尾叶蝉）代表物种的卵巢结构进行了研究。所研究的蜡蝉亚目昆虫的卵巢由端滋式卵巢小管组成。从顶端到底部，单个卵巢小管有四个界限分明的区域：端丝、滋养区（营养室）、卵黄发生区和柄（卵巢小管柄）。滋养区未分化为不同的区域，由含有多个滋养细胞核的合胞体叶组成，这些细胞核嵌入共同的细胞质中。叶围绕着一个分支的、无细胞的营养核心呈放射状排列。早期卵黄发生前（静止）的卵母细胞和滤泡前细胞位于滋养区底部。卵黄发生区容纳着呈线性排列的发育中卵母细胞，每个卵母细胞通过一条宽阔的营养索与营养核心相连。每个卵母细胞被单层滤泡细胞包围，这些滤泡细胞在卵黄发生开始时变成双核。
