Ultrastructure and Histopathological Alteration in The Ovaries of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) Induced by X-ray Radiation

A. Negm, A. Gabarty, H.A.S. Elelimy
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Abstract

Ceratitis capitata is considered one of the world’s most destructive pests. Medflies can infest over 300 species of fruit plants, adapt to a variety of climate zones and have a high invasive potential. Medfly can target economically valuable fruit, resulting in significant economic losses estimated to be in the billions of dollars per year. This study aimed to investigate the effect of X-ray irradiation on the female ovary of Ceratitis capitata (resulting from irradiated pupae) in comparison to a normal female ovary of the same age. The structure of normal and treated female ovaries of Ceratitis capitata was studied using light and transmission electron microscopy. The female reproductive system of Ceratitis capitata is composed of paired lateral ovaries. Each ovary consists of polytrophic meroistic ovarioles formed by a terminal filament, a germarium and a vitellarium. The female ovaries were greatly affected by X-ray irradiation because of the appearance of abnormal shape and size of egg chambers, degeneration of nurse cells and their nucleus, the nucleus of follicular epithelium appear devoid of chromatin materials, presence of lysosomes and myeloid bodies, the oocytes appear devoid of yolk granules and its nucleus. The results of this study show that X-ray radiation technology has a clear effect on C. capitata and could be considered an effective and safe method to control medflies populations.
x射线致头角角膜炎(双翅目:绦虫科)卵巢超微结构及组织病理学改变
头角杆菌被认为是世界上最具破坏性的害虫之一。medfly可侵染300多种果树,适应多种气候带,具有很高的入侵潜力。Medfly的目标是经济上有价值的水果,估计每年造成数十亿美元的重大经济损失。本研究旨在探讨x射线照射对头角性角膜炎(由照射后的蛹引起)雌性卵巢的影响,并与同龄正常雌性卵巢进行比较。用光镜和透射电镜观察了正常和治疗的头角性角膜炎雌性卵巢的结构。头型角膜炎的雌性生殖系统由成对的侧卵巢组成。每个子房由多营养分子房组成,由顶生细丝、胚珠和卵黄组成。x线照射对女性卵巢的影响较大,卵室形状和大小异常,乳细胞和细胞核变性,卵泡上皮细胞核染色质物质缺失,溶酶体和髓样小体存在,卵母细胞蛋黄颗粒和细胞核缺失。本研究结果表明,x射线辐射技术对蠓的杀伤效果明显,可作为一种有效、安全的蠓种群控制方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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