Fine structure of the midgut of Sinopanorpa tincta (Navás) (Mecoptera: Panorpidae)

Zhang, Guowei; Hua, Bao‐Zhen

doi:10.1016/j.tice.2014.07.002

Cited by 5 publications

(1 citation statement)

References 37 publications

(47 reference statements)

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“…The alimentary canal of dipteran larvae is divided into three morphologically and physiologically distinct regions: foregut, midgut, and hindgut. The midgut consists of a tube lined with a single layer of epithelial cells responsible for nutrient digestion and absorption (Zhang and Hua, 2014). Salivary glands of B. hygida are paired organs divided into three morphologically and physiologically distinct regions: S1 or anterior, S2 or granulosa, and S3 or posterior (Laicine et al, 1984; Sauaia, Laicine, & Alves, 1971; Simon and Almeida, 2004).…”

Section: Methodsmentioning

confidence: 99%

Mechanisms of programmed cell death in the midgut and salivary glands fromBradysia hygida(Diptera: Sciaridae) during pupal–adult metamorphosis

Przepiura

Navarro

Ribeiro

et al. 2020

Cell Biology International

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Programmed cell death is involved with the degeneration/remodeling of larval tissues and organs during holometabolous development. The midgut is a model to study the types of programmed cell death associated with metamorphosis because its structure while degenerating is a substrate for the formation of the adult organ. Another model is the salivary glands from dipteran because their elimination involves different cell death modes. This study aimed to investigate the models of programmed cell death operating during midgut replacement and salivary gland histolysis in Bradysia hygida. We carried out experiments of real‐time observations, morphological analysis, glycogen detection, filamentous‐actin localization, and nuclear acridine orange staining. Our findings allow us to establish that an intact actin cytoskeleton is required for midgut replacement in B. hygida and nuclear condensation and acridine orange staining precede the death of the larval cells. Salivary glands in histolysis present cytoplasmic blebbing, nuclear retraction, and acridine orange staining. This process can be partially reproduced in vitro. We propose that the larval midgut death involves autophagic and apoptotic features and apoptosis is a mechanism involved with salivary gland histolysis.

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Section: Methodsmentioning

confidence: 99%

Mechanisms of programmed cell death in the midgut and salivary glands fromBradysia hygida(Diptera: Sciaridae) during pupal–adult metamorphosis

Przepiura

Navarro

Ribeiro

et al. 2020

Cell Biology International

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Ultrastructure of the larval Malpighian tubules in Terrobittacus implicatus (Mecoptera: Bittacidae)

Liu

Hua

2018

Protoplasma

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The larvae of Bittacidae, a cosmopolitan family in Mecoptera, have an interesting habit of spraying the body surface with soil through the anus after hatching, and each molts. The fine structure of Malpighian tubules, however, remains largely unknown in the larvae of Bittacidae to date. Here, we studied the ultrastructure of the larval Malpighian tubules in the hangingfly Terrobittacus implicatus (Huang & Hua) using scanning and transmission electron microscopy. The larvae of T. implicatus have six elongate Malpighian tubules at the junction of the midgut and hindgut. The tubule comprises a basal lamina, a single-layered epithelium, and a central lumen. The basal plasma membranes of the epithelial cells are conspicuously infolded and generate a labyrinth. The epithelium consists of two types of cells: large principal cells and scattered stellate cells. Mitochondria and cisterns of rough endoplasmic reticulum are numerous in the principal cells but are sparsely distributed in the stellate cells, indicating that the principal cells are active in transport. On the other hand, spherites are only abundant in the principal cells and are likely associated with the soil-spraying habit of the larvae.

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Ultrastructure of the rectum of the soil-spraying larva in Bittacus cirratus (Mecoptera: Bittacidae)

Liu

Hua

2019

Protoplasma

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Fine structure of the midgut of Sinopanorpa tincta (Navás) (Mecoptera: Panorpidae)

Cited by 5 publications

References 37 publications

Mechanisms of programmed cell death in the midgut and salivary glands fromBradysia hygida(Diptera: Sciaridae) during pupal–adult metamorphosis

Mechanisms of programmed cell death in the midgut and salivary glands fromBradysia hygida(Diptera: Sciaridae) during pupal–adult metamorphosis

Ultrastructure of the larval Malpighian tubules in Terrobittacus implicatus (Mecoptera: Bittacidae)

Ultrastructure of the rectum of the soil-spraying larva in Bittacus cirratus (Mecoptera: Bittacidae)

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