Ultrastructural Study on the Midgut Regions of the Milkweed Bug, Spilostethus pandurus Scop., (Hemiptera: Lygaeidae)

Meguid, Afaf Abdel; Awad, H.H.; Omar, A H; Elelimy, H.A.S.

doi:10.3923/ajbs.2013.54.66

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…In addition, the accumulation of large vacuoles, which grow in size after blood feeding and during blood digestion, suggests that the AMG and MMG also take part in water absorption from ingested food. Similar functions of the three distinct regions of the midgut have been also described for some other hematophagous and non-hematophagous hemipterans (Dow 1987, Billingsley 1990, Terra 1990, Silva et al 1995, 1996, Azevedo et al 2009, Fialho et al 2013, Megiud et al 2013). In R. prolixus , the crop (AMG) is responsible for water transport, ion regulation, and the accumulation of lipids and glycogen.…”

Section: Discussionsupporting

confidence: 70%

“…Therefore, it can be differentiated in some distinct regions with numerous caeca (Rost-Roszkowska 2008). In the majority of Hemiptera that have various feeding strategies, including hematophagous ones, the midgut is divided into three regions—the anterior, middle, and posterior midgut (Silva & Terra 1994, Silva et al 1995, Guedes et al 2007, Habibi et al 2008, Azevedo et al 2009, Bandani et al 2010, Megiud et al 2013, Suicmez & Ozmen 2014). The hemipteran midgut has also been described as having four (Nava-Gervasio et al 2007) or two regions (Jarial 2005).…”

Section: Discussionmentioning

confidence: 99%

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Investigation of the midgut structure and ultrastructure in Cimex lectularius and Cimex pipistrelli (Hemiptera: Cimicidae)

et al. 2016

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Cimicidae are temporary ectoparasites, which means that they cannot obtain food continuously. Both Cimex species examined here, Cimex lectularius (Linnaeus 1758) and Cimex pipistrelli (Jenyns 1839), can feed on a non-natal host, C. lectularius from humans on bats, C. pipistrelli on humans, but never naturally. The midgut of C. lectularius and C. pipistrelli is composed of three distinct regions—the anterior midgut (AMG), which has a sack-like shape, the long tube-shaped middle midgut (MMG), and the posterior midgut (PMG). The different ultrastructures of the AMG, MMG, and PMG in both of the species examined suggest that these regions must fulfill different functions in the digestive system. Ultrastructural analysis showed that the AMG fulfills the role of storing food and synthesizing and secreting enzymes, while the MMG is the main organ for the synthesis of enzymes, secretion, and the storage of the reserve material. Additionally, both regions, the AMG and MMG, are involved in water absorption in the digestive system of both Cimex species. The PMG is the part of the midgut in which spherites accumulate. The results of our studies confirm the suggestion of former authors that the structure of the digestive tract of insects is not attributed solely to diet but to the basic adaptation of an ancestor.

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Section: Discussionsupporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Investigation of the midgut structure and ultrastructure in Cimex lectularius and Cimex pipistrelli (Hemiptera: Cimicidae)

et al. 2016

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“…However, in Spilostethus pandurus Scop. (Lygaeidae), the cytoplasm of the midgut epithelial cells is packed with mitochondria, granulated endoplasmic reticulum, free ribosomes, lysosomes, and lipid droplets (Meguid et al, 2013). Also, in the perinuclear cytoplasm of digestive cells of C. scutellatum (Plataspidae), many spherocrystals and lysosomes (or autophagic structures) were found by Santos et al (2017).…”

Section: Discussionmentioning

confidence: 99%

Ultrastructural Characterization of Salivary Glands, Alimentary Canal and Malpighian Tubules of the Red Shield Bug Carpocoris mediterraneus Tamanini, 1958 (Heteroptera, Pentatomidae)

Koçakoğlu

Candan

2022

Microsc Microanal

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In this study, the gut structure and excretory system of Carpocoris mediterraneus which is phytophagous insect, were described with light and electron microscopies and discussed in relation to other Heteroptera species. The salivary system has two principal and accessory salivary glands, two principal and accessory gland ducts. The salivary gland and duct wall have a single layer of cuboidal cells. The duct lumen is surrounded by a thick intima layer. In the cytoplasm of the epithelial cells are seen vesicles. The gut includes fore, mid, and hindguts. The foregut consists of a long narrow tubular pharynx which opens into a slightly wider esophagus. The esophagus is thin walled and in turn opens into the midgut. The midgut has four regions (V1–V4). V1–V4 walls have a monolayered epithelium. V1 epithelium is double-nucleated. V1 cytoplasm contains numerous vesicles, secretory granules, spherocrystals, and cytoplasmic inclusions. Rod-shaped bacteria are seen in V4 lumen. The hindgut has pylorus and rectum. Malpighian tubules were attached in the pylorus. Malpighian tubules have a single-layer cuboidal epithelium. In their lumen, there are spherocrystals. The rectum wall has a monolayer of squamous epithelium and muscle layer. Numerous bacteria and uric acid crystals are seen in its lumen.

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Morphology and histology of the alimentary canal, salivary glands and Malpighian tubules in Pyrrhocoris apterus (Linnaeus, 1758) (Hemiptera: Pyrrhocoridae): a scanning electron and light microscopies study

Koçakoğlu

2021

Int J Trop Insect Sci

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Ultrastructural Study on the Midgut Regions of the Milkweed Bug, Spilostethus pandurus Scop., (Hemiptera: Lygaeidae)

Cited by 5 publications

References 6 publications

Investigation of the midgut structure and ultrastructure in Cimex lectularius and Cimex pipistrelli (Hemiptera: Cimicidae)

Investigation of the midgut structure and ultrastructure in Cimex lectularius and Cimex pipistrelli (Hemiptera: Cimicidae)

Ultrastructural Characterization of Salivary Glands, Alimentary Canal and Malpighian Tubules of the Red Shield Bug Carpocoris mediterraneus Tamanini, 1958 (Heteroptera, Pentatomidae)

Morphology and histology of the alimentary canal, salivary glands and Malpighian tubules in Pyrrhocoris apterus (Linnaeus, 1758) (Hemiptera: Pyrrhocoridae): a scanning electron and light microscopies study

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