Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells

Abstract Diplopods are considered important macroarthropods the soil as part of its maintenance and balance. These animals usually do not occur in high densities, but population explosions caused by environmental disturbances, climate changes, and use of pesticides that eliminate possible competitor...

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Main Authors: C. Moreira-de-Sousa, M. Iamonte, C. S. Fontanetti
Format: Article
Language:English
Published: Instituto Internacional de Ecologia
Series:Brazilian Journal of Biology
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016005116106&lng=en&tlng=en
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spelling doaj-bfb1baf6a5414fb197ad840103cd6d3e2020-11-24T22:00:26ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-4375010.1590/1519-6984.11715S1519-69842016005116106Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cellsC. Moreira-de-SousaM. IamonteC. S. FontanettiAbstract Diplopods are considered important macroarthropods the soil as part of its maintenance and balance. These animals usually do not occur in high densities, but population explosions caused by environmental disturbances, climate changes, and use of pesticides that eliminate possible competitors, have been reported. The millipede Urostreptus atrobrunneus Pierozzi and Fontanetti, 2006 have become a nuisance to humans in infestation sites in urban centers of the state of Sao Paulo, Brazil. As a contribution to the understanding of this potential pest, this study describes the histology, histochemistry, and ultrastructure of the U. atrobrunneus midgut, and presents the redefinition of hepatic cells somewhat controversial in the literature. The region of the midgut is characterized by the absence of a cuticular intima, and composed of a pseudostratified epithelium on a thick basal membrane, followed by a muscle layer, a layer of hepatic cells, lined by an external membrane. The morphology observed in U. atrobrunneus is similar to that reported for other species of diplopods. The hepatic cells have been previously described as randomly without forming a layer, however, the present results clearly demonstrate that these cells form a continuous layer over the whole midgut.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016005116106&lng=en&tlng=enhistologyhistochemistryultrastructureDiplopodadigestive tract
collection DOAJ
language English
format Article
sources DOAJ
author C. Moreira-de-Sousa
M. Iamonte
C. S. Fontanetti
spellingShingle C. Moreira-de-Sousa
M. Iamonte
C. S. Fontanetti
Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
Brazilian Journal of Biology
histology
histochemistry
ultrastructure
Diplopoda
digestive tract
author_facet C. Moreira-de-Sousa
M. Iamonte
C. S. Fontanetti
author_sort C. Moreira-de-Sousa
title Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
title_short Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
title_full Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
title_fullStr Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
title_full_unstemmed Midgut of the diplopod Urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
title_sort midgut of the diplopod urostreptus atrobrunneus: structure, function, and redefinition of hepatic cells
publisher Instituto Internacional de Ecologia
series Brazilian Journal of Biology
issn 1678-4375
description Abstract Diplopods are considered important macroarthropods the soil as part of its maintenance and balance. These animals usually do not occur in high densities, but population explosions caused by environmental disturbances, climate changes, and use of pesticides that eliminate possible competitors, have been reported. The millipede Urostreptus atrobrunneus Pierozzi and Fontanetti, 2006 have become a nuisance to humans in infestation sites in urban centers of the state of Sao Paulo, Brazil. As a contribution to the understanding of this potential pest, this study describes the histology, histochemistry, and ultrastructure of the U. atrobrunneus midgut, and presents the redefinition of hepatic cells somewhat controversial in the literature. The region of the midgut is characterized by the absence of a cuticular intima, and composed of a pseudostratified epithelium on a thick basal membrane, followed by a muscle layer, a layer of hepatic cells, lined by an external membrane. The morphology observed in U. atrobrunneus is similar to that reported for other species of diplopods. The hepatic cells have been previously described as randomly without forming a layer, however, the present results clearly demonstrate that these cells form a continuous layer over the whole midgut.
topic histology
histochemistry
ultrastructure
Diplopoda
digestive tract
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016005116106&lng=en&tlng=en
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