Morphological, histological, and ultrastructural studies of the ovary of the cattle-tick Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae)
Morphological, histological, and ultrastructural studies of the ovary of the cattle-tick Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae)
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DOI：
10.1016/j.vetpar.2004.09.020
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发表时间：
2005-05-15
影响因子：
2.6
通讯作者：
Mathias, MIC
中科院分区：
文献类型：
--
作者：
Saito, KC;Bechara, GH;Mathias, MIC
本研究介绍了牛蜱的卵巢形态，以及卵母细胞卵黄形成过程的动力学。这些个体的卵巢是泛型的；因此，它缺乏护理细胞。该器官由单一管状结构组成，连续，由具有圆形核的小上皮细胞壁划分的管腔组成。在该蜱种中，卵母细胞分为6个阶段，从I到VI不等，并根据：细胞质外观和胚囊、卵黄颗粒和绒毛膜的存在。不同大小和不同发育阶段的卵母细胞通过细胞蒂附着在卵巢上，直到完成第五阶段。之后，它们被释放到腔内，并从腔内到外部。一些卵母细胞（分类为VI型）表现出非典型外观，表明一些细胞成分可能正在经历退化过程和/或重吸收。(c) 2004 Elsevier B.V.版权所有
This study presents the morphology of the ovary, as well as the dynamics of the vitellogenesis process in oocytes of the cattle-tick Boophilus microplus. The ovary of these individuals is of the panoistic type; therefore, it lacks nurse cells. This organ consists of a single tubular structure, continuous, and composed of a lumen delimitated by a wall of small epithelial cells with rounded nuclei. In this tick species, the oocytes were classified into six stages varying from I to VI and according to: cytoplasm appearance and presence of the germ vesicle, yolk granules, and chorion. Oocytes of various sizes and at different developmental stages remain attached to the ovary through a cellular pedicel until completing stage V. Afterwards, they are liberated into the lumen and from there to the exterior. Some oocytes (classified as type VI) showed an atypical appearance indicating that some of the cellular components would be undergoing a degenerative process and/or reabsorption. (c) 2004 Elsevier B.V. All rights reserved.