The fat body in Rhinocricus padbergi (Diplopoda, Spirobolida)

Fontanetti, Carmem Silvia; Camargo‐Mathias, Maria Izabel; Tiritan, Bianca M. S.

doi:10.1590/s0073-47212004000400002

Cited by 28 publications

(37 citation statements)

References 6 publications

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“…Similar structures in the perivisceral fat body were observed (Fontanetti et al, 2006) and in the R. padbergi ovocyte cytoplasm (Fontanetti and CamargoMathias, 2004); most of these structures presented calcium in their composition. These structures, referred to as mineral concentrations or spherocrystals, consist of phosphate-complex metals (Ca, Mg, K, Fe, Zn, and Sr), carbonates, and chlorides.…”

Section: Microscopy Research and Techniquesupporting

confidence: 53%

Sewage sludge toxicity in edaphic organism: Analysis of midgut responses in the diplopodRhinocricus padbergi

Bozzatto

Fontanetti

2012

Microscopy Res & Technique

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Diplopods are agile saprophagous invertebrates with the ability to colonize several soil layers. They feed on waste and decaying organic matter, making the soil in which they are present better aerated and mineral-enriched. Because of their habits, diplopods have been suggested to be used in studies to analyze possible toxic effects of impacted soils in edafic fauna. In that respect, this study aimed at checking the feasibility of using morphological analysis from millipede's midgut as a biomarker for soils exposed to sewage sludge from sewage treatment plants. Histological and histochemical techniques, applied to the species Rhinocricus padbergi's midgut, were used. Two sewage sludge samples were used; they were collected in two small towns in the countryside of São Paulo State. Both cities are part of the Piracicaba-Capivari-Jundiaí basin (PCJ-1 and PCJ-3). For 7 and 15-day periods, the animals were exposed to 10% concentrations and crude sludge for the PCJ-1sample and to 1, 10, and 50% concentrations and sludge for the PCJ-3 sample. The material exposed to the PCJ-1 sample showed an increase in the presence of cytoplasmic granules in both concentrations in all periods and a slight increase in the rate of epithelial renewal. The material of PCJ-3 sample presented the same alterations observed in PCJ-1 sample in higher frequence and over that high quantity of neutral polysaccharides in the hepatic cells layer. We can conclude that with the increase of sewage sludge concentrations tested, there is an increase in morphophysiologicals alterations frequencies found in the diplopods' midgut.

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Section: Microscopy Research and Techniquesupporting

confidence: 53%

Sewage sludge toxicity in edaphic organism: Analysis of midgut responses in the diplopodRhinocricus padbergi

Bozzatto

Fontanetti

2012

Microscopy Res & Technique

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“…The FB of larvae of A. gemmatalis presented structural and anatomical differences. Such differences allowed the division of the FB into distinct portions -the PA and the PV, as described by other authors who worked with lepidopteran (Coupland 1957;Dean et al 1985;Wang and Haunerland 1993;Fontanetti et al 2004). In general, the PA was the largest part of the organ and was formed by the cylindrical cells contiguously lined, presenting one layer of cell in thickness, whereas the PV was comprised by a mass of small cells, superposed as clusters.…”

Section: Discussionmentioning

confidence: 93%

“…Among the denominations found for the FB cells described by several authors, in this work the term trophocyte was opted to identify the FBcomprising cells, similar to the denominations made by Rosel and Wheeler (1995), Oliveira and Cruz-Landim (2003), Zara and Caetano (2004), Sarmento et al (2004) and Roma et al (2005). Fontanetti et al (2004) and Gullan and Cranston (2005), working with different orders of arthropod, used the term adipocyte for these cells since they were not only the fat deposits. The FB of larvae of A. gemmatalis presented structural and anatomical differences.…”

Section: Discussionmentioning

confidence: 99%

Histology and ultrastructure of the fat body of Anticarsia gemmatalis (HÜBNER, 1818) (LEPIDOPTERA: NOCTUIDAE)

Carvalho

Andrade

Levy

et al. 2013

Braz. arch. biol. technol.

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“…These structures are composed of an organic matrix forming calcium crystal complexes [50]. The spherocrystals (in diplopoda) are believed to be related with: a) the storage of calcium for the formation of the embryonic skeleton [50]; b) the detoxification of the organism exposed to high concentrations of minerals from the soil [51]; and c) the processes of ionic balance which may include several phenomena, such as recycling, storage and secretion of minerals [52]. Spherocrystals were also observed by Pereira et al [15] in R. sanguineus s. l. salivary gland cells in degeneration when subjected to different concentrations of fipronil; however, their exact function in the salivary glands has not been elucidated.…”

Section: Discussionmentioning

confidence: 99%

Morpho-ultrastructural alterations in the salivary glands of semi-engorged Riphicephalus sanguineus s.l. females subjected to permethrin

2017

ELSR

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Ticks are arthropods of great medical-veterinary importance, and several methods have been developed to control them. The synthetic acaricide permethrin is one of the most widely used substances to control this pest. The present study brings cytochemical and ultrastructural data on the alterations in the salivary gland cells of Rhipicephalus sanguineus sensu lato semi-engorged females subjected to 206, 1031, and 2062 ppm of permethrin, showing that this chemical acts on the glandular acini, affecting the morpho-physiology of their cells, making them irregular, causing intense cytoplasmic vacuolation, altering the mitochondria and causing the emergence of lysosomes, myelin figures and spherocrystals. In addition, the results demonstrated that the chemical affected the nuclei and nucleoli of the cells, causing alterations in size, disorganizing and fragmenting them. Such alterations were mainly observed when processes of apoptotic death occurred, and indicated the occurrence of precocious degeneration of the glandular tissue caused by the exposure to the product, even in lower concentrations than the ones recommended by the manufacturer. Under normal conditions, this process would only occur in the end of the engorgement period. Therefore, these findings confirmed and demonstrated that, even at low concentrations, this acaricide would be able to accelerate the process of glandular tissue degeneration through atypical cell death, where the cell death by apoptosis (fragmentation) and autophagy (vacuolation) occur simultaneously.

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The fat body in Rhinocricus padbergi (Diplopoda, Spirobolida)

Abstract: The distribution and morphology of fat body of Brazilian diplopod Rhinocricus padbergi Verhoeff, 1938 are analyzed by scanning electron microscopy and histology. A terminology is proposed for description of the diplopods fat body

Cited by 28 publications

References 6 publications

Sewage sludge toxicity in edaphic organism: Analysis of midgut responses in the diplopodRhinocricus padbergi

Sewage sludge toxicity in edaphic organism: Analysis of midgut responses in the diplopodRhinocricus padbergi

Histology and ultrastructure of the fat body of Anticarsia gemmatalis (HÜBNER, 1818) (LEPIDOPTERA: NOCTUIDAE)

Morpho-ultrastructural alterations in the salivary glands of semi-engorged Riphicephalus sanguineus s.l. females subjected to permethrin

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