Morphological structure of salivary glands, alimentary canal, and Malpighian tubules in adult Eurydema spectabilis Horváth, 1882 (Heteroptera, Pentatomidae).

IF 2 3区工程技术 Q2 ANATOMY & MORPHOLOGY Microscopy Research and Technique Pub Date : 2024-10-02 DOI:10.1002/jemt.24684

Hicret Arslan, Selami Candan

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Abstract

Eurydema spectabilis (Heteroptera: Pentatomidae) has a piercing-sucking mouth type and feeds on plant sap. In this study, the morphological structure of the salivary glands, alimentary canal, and Malpighian tubules of E. spectabilis was examined using light and scanning electron microscopy. Salivary glands consist of the principal and accessory salivary glands. In E. spectabilis, digestion begins in the mouth and ends in the anus. Alimentary canal is divided into three parts: foregut, midgut, and hindgut. The foregut consists of pharynx, esophagus, and proventriculus. The esophagus connects to the proventriculus and resembles a narrow tube. The wall of the proventriculus has a recessed structure and is surrounded by a single cylindrical layer of epithelium and muscle. The midgut is divided into three regions: the first, second, and third ventricles (V1-V3). V1 and V2 consist of single-layered cylindrical epithelium. V3 contains a single layer of cuboidal epithelium. Gastric caeca were found in the midgut. The hindgut consisted of a pylorus followed by a well-developed rectum. The wall of the rectum consists of a single-layer cuboidal epithelium and muscle. Its lumen contains numerous bacteria and uric acid crystals. The pylorus consists of a single-layered cylindrical epithelium. It is also the origin of Malpighian tubules. Malpighian tubules consist of two regions: proximal and distal. The morphological structure of the salivary glands, alimentary canal, and Malpighian tubules of E. spectabilis, which has not been studied before, was examined and discussed in comparison with other orders. It is also aimed to contribute to future studies. RESEARCH HIGHLIGHTS: In E. spectabilis, the salivary glands are divided into principal and accessory salivary glands. Microvilli and numerous secretory granules were found in Malpighian tubules. Numerous uric acid crystals and bacteria were found in the rectum lumen.

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Eurydema spectabilis Horváth, 1882 成虫唾液腺、消化管和 Malpighian 小管的形态结构（异翅目，五蠹科）。

Eurydema spectabilis（异翅目：五蠹科）具有刺吸式口器，以植物汁液为食。本研究采用光学显微镜和扫描电子显微镜对眼镜蝇的唾液腺、消化管和马氏管的形态结构进行了研究。唾液腺包括主唾液腺和附属唾液腺。眼镜鳗的消化始于口腔，终于肛门。消化管分为三部分：前肠、中肠和后肠。前肠由咽、食道和胃窦组成。食道与胃窦相连，像一根狭窄的管子。胃窦壁呈凹陷结构，周围有一层圆柱形的上皮和肌肉。中肠分为三个区域：第一、第二和第三脑室（V1-V3）。V1 和 V2 由单层圆柱形上皮组成。V3 包含单层立方体上皮。在中肠发现了胃盲肠。后肠由幽门和发达的直肠组成。直肠壁由单层立方体上皮和肌肉组成。直肠腔内有大量细菌和尿酸结晶。幽门由单层圆柱形上皮组成。它也是 Malpighian 小管的起源。马氏管由近端和远端两个区域组成。本研究对眼镜鳗的唾液腺、消化管和马氏管的形态结构进行了研究，并与其他目进行了比较和讨论。本研究还旨在为今后的研究做出贡献。研究重点：眼镜鳗的唾液腺分为主唾液腺和附属唾液腺。在 Malpighian 小管中发现了微绒毛和大量分泌颗粒。在直肠腔内发现大量尿酸结晶和细菌。

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来源期刊

Microscopy Research and Technique 医学-解剖学与形态学

CiteScore

5.30

自引率

20.00%

发文量

233

审稿时长

4.7 months

期刊介绍： Microscopy Research and Technique (MRT) publishes articles on all aspects of advanced microscopy original architecture and methodologies with applications in the biological, clinical, chemical, and materials sciences. Original basic and applied research as well as technical papers dealing with the various subsets of microscopy are encouraged. MRT is the right form for those developing new microscopy methods or using the microscope to answer key questions in basic and applied research.