Ultra- and microstructure of the female reproductive system of Matsucoccus matsumurae |
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| Institution: | 1. School of Life Science, Shanxi University, Wucheng Road 92#, Taiyuan, Shanxi 030006, China;2. Jinhua Forest Pest Quarantine Station, Yongkang Street 205#, Jinhua, Zhejiang 321017, China;1. NAIP Component-4 Subproject (C-3007), Division of Entomology, Indian Agricultural Research Institute, New Delhi 110012, India;2. Indian Institute of Natural Resins and Gums, Namkum, Ranchi 834010, India;1. Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, C.P. 11461, 05422-970 São Paulo, Brazil;2. Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, C.P. 26077, 05513-970 São Paulo, Brazil;1. Ernst-Moritz-Arndt-Universität Greifswald, Zoologisches Institut und Museum, Abteilung Cytologie und Evolutionsbiologie, Soldmannstr. 23, D-17487 Greifswald, Germany;2. Universität Rostock, Institut für Biowissenschaften, Lehrstuhl für Allgemeine & Spezielle Zoologie, Universitätsplatz 2, D-18051 Rostock, Germany;3. Universität Duisburg-Essen, Universitätsklinikum Essen, Zentrales Tierlaboratorium, Hufelandstr. 55, D-45122 Essen, Germany;1. Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy;2. Sugadaira Montane Research Center, University of Tsukuba, Sugadaira Kogen, Ueda, Nagano 386-2204, Japan;3. Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena, Ebertstrasse 1, D-07743 Jena, Germany;1. Zoologische Staatssammlung München, Münchhausenstraße 21, 81247 München, Germany;2. Department Biologie II, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany |
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| Abstract: | The ultra- and microstructure of the female reproductive system of Matsucoccus matsumurae was studied using light microscopy, scanning and transmission electron microscopy. The results revealed that the female reproductive system of M. matsumurae is composed of a pair of ovaries, a common oviduct, a pair of lateral oviducts, a spermatheca and two pairs of accessory glands. Each ovary is composed of approximately 50 telotrophic ovarioles that are devoid of terminal filaments. Each ovariole is subdivided into an apical tropharium, a vitellarium and a short pedicel connected to a lateral oviduct. The tropharium contains 8–10 trophocytes and two early previtellogenic oocytes termed arrested oocytes. The trophocytes degenerate after egg maturation, and the arrested oocytes are capable of further development. The vitellarium contains 3–6 oocytes of different developmental stages: previtellogenesis, vitellogenesis and choriogenesis. The surface of the vitellarium is rough and composed of a pattern of polygonal reticular formations with a center protuberance. The oocyte possesses numerous yolk spheres and lipid droplets, and is surrounded by a mono-layered follicular epithelium that becomes binucleate at the beginning of vitellogenesis. Accessory nuclei are observed in the peripheral ooplasm during vitellogenesis. |
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| Keywords: | Female reproductive system Ovary Telotrophic ovariole Follicular cell Ultrastructure |
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