Morphology and composition of the midgut bacterial community of Scaptocoris castanea Perty, 1830 (Hemiptera: Cydnidae)

Cossolin, Jamile Fernanda Silva; Lopes, Déborah Romaskevis Gomes; Martínez, Luis Carlos; Santos, Helen Cristina Pinto; Fiaz, Muhammad; Pereira, Mônica Josene Barbosa; Vivan, L. M.; Mantovani, Hilário Cuquetto; Serrão, José Éduardo

doi:10.1007/s00441-020-03197-7

Cited by 6 publications

(8 citation statements)

References 60 publications

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“…In insects, several insecticides that act orally cause side-effects in the midgut [ 13 , 21 , 22 ]. The midgut, with functions such as nutrient absorption and digestive processes [ 23 ], cell regeneration [ 24 ], acting as a barrier against pathogens [ 25 ], and detoxification of chemical substances [ 26 , 27 ], is the first organ exposed to insecticides per os. Thus, insecticide molecules should cross that barrier to reach the hemolymph and spread to the target organ [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Deltamethrin-Mediated Effects on Locomotion, Respiration, Feeding, and Histological Changes in the Midgut of Spodoptera frugiperda Caterpillars

Vinha

Plata-Rueda

Soares

et al. 2021

Insects

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Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is the main pest of maize crops, and effective methods for pest management are needed. The insecticidal efficacy of deltamethrin was evaluated against S. frugiperda for toxicity, survival, locomotion, anti-feeding, and histological changes in the midgut. Concentration–mortality bioassays confirmed that deltamethrin (LC50 = 3.58 mg mL−1) is toxic to S. frugiperda caterpillars. The survival rate was 99.7% in caterpillars not exposed to deltamethrin, decreasing to 50.3% in caterpillars exposed to LC50, and 0.1% in caterpillars treated with LC90. Spodoptera frugiperda demonstrated reduced mobility on deltamethrin-treated surfaces. Deltamethrin promoted a low respiration rate of S. frugiperda for up to 3 h after insecticide exposure, displaying immobilization and inhibiting food consumption. Deltamethrin induces histological alterations (e.g., disorganization of the striated border, cytoplasm vacuolization, and cell fragmentation) in the midgut, damaging the digestive cells and peritrophic matrix, affecting digestion and nutrient absorption.

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Section: Introductionmentioning

confidence: 99%

Deltamethrin-Mediated Effects on Locomotion, Respiration, Feeding, and Histological Changes in the Midgut of Spodoptera frugiperda Caterpillars

Vinha

Plata-Rueda

Soares

et al. 2021

Insects

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“…The midgut of S. castanea (Cydnidae) is anatomically divided into five regions (ventricles) (V1–V5). In midgut of S. castanea (Cydnidae), V1–V4 regions are similar between males and females, but V5 is different (Cossolin et al, 2020). In O. fasciatus (Lygaeidae), the midgut consists of three parts and has a broad stomach at the front, a narrow tubular tube, and a sac-like structure at the very end (Hood, 1937).…”

Section: Discussionmentioning

confidence: 99%

“…The V1 in midgut of S. castanea (Cydnidae) is formed by a simple columnar epithelium, but the epithelium in V2 and V3 is cubic, the epithelium in V4 is flat. In addition, V5 in male is formed by cubic cells, but the cells of V5 region in the females are large and elongated (Cossolin et al, 2020). In C. mediterraneus , V1 epithelium has columnar cells with two nuclei.…”

Section: Discussionmentioning

confidence: 99%

“…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). The cytoplasm in V1 of O. fasciatus (Lygaeidae) is rich in dark granules, mitochondria, autolysosomes, and lysosomes with electron-dense content, the nucleus rich in decondensed chromatin with clusters of condensed chromatin (Cossolin et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

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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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“…Endosymbionts are common in insects with specialized diets, supplanting nutritional deficiencies with the production of essential metabolites, such as amino acids and vitamins (Buchner, 1965; Skidmore & Hansen, 2017; Cossolin et al, 2020). However, the representatives of Camponotus have a generalist feeding habit and, in these ants, the endosymbionts have been claimed to provide essential amino acids (Zientz et al, 2006; Feldhaar et al, 2007), which contributes to immune defense and colony growth (Souza et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure of the Bacteriocytes in the Midgut of the Carpenter ant Camponotus rufipes: Endosymbiont Control by Autophagy

et al. 2020

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The carpenter ant Camponotus rufipes has intracellular bacteria in bacteriocytes scattered in the midgut epithelium, which have different amounts of endosymbionts, according to the developmental stages. However, there are no detailed data about the midgut cells in adult workers. The present work aimed to evaluate the morphology and cellular events that coordinate the abundance of endosymbionts in the midgut cells in C. rufipes workers. The midgut epithelium has digestive cells, bacteriocytes, and cells with intermediate morphology. The latter is similar to bacteriocytes, due to the abundance of endosymbionts, and similar to digestive cells, due to their microvilli. The digestive and intermediate cells are rich in autophagosomes and autolysosomes, both with bacteria debris in the lumen. These findings suggest that midgut cells of C. rufipes control the endosymbiont level by the autophagy pathway.

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Morphology and composition of the midgut bacterial community of Scaptocoris castanea Perty, 1830 (Hemiptera: Cydnidae)

Cited by 6 publications

References 60 publications

Deltamethrin-Mediated Effects on Locomotion, Respiration, Feeding, and Histological Changes in the Midgut of Spodoptera frugiperda Caterpillars

Deltamethrin-Mediated Effects on Locomotion, Respiration, Feeding, and Histological Changes in the Midgut of Spodoptera frugiperda Caterpillars

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

Ultrastructure of the Bacteriocytes in the Midgut of the Carpenter ant Camponotus rufipes: Endosymbiont Control by Autophagy

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