|
|
|
|
| |
|
|
| Pinheiro,Daniela O.; Silva,Reinaldo J.; Quagio-Grassiotto,Irani; Gregório,Elisa A.. |
| The sugarcane borer, Diatraea saccharalis Fabricius, has great economical interest as it affects the culture and industrial use of the sugarcane. However, there are few studies concerning the internal morphology of this insect. This work aims to study morphometrically the midgut and the epithelium along their lenght, trying to characterize different regions. Midgut of last instar larvae was divided in three regions: anterior, middle and posterior, and the fragments were processed for light microscopic observation. Histological sections were analyzed in a computerized system concerning the length, width and area of the epithelium, their cells, and the midgut lumen. The obtained data were statistically analyzed by the Kruskal-Wallis test and by multivariate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morphometry; Epithelial cell; Insect; Sugarcane borer; Mesenteron. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000300012 |
| |
|
|
| Martins,V.M.V.; Marques Junior,A.P.; Vasconcelos,A.C.; Martins,E.; Santos,R.L.; Lima,F.P.C.. |
| Morphological changes in the placenta at periparturition and the involvement of apoptosis controlling cell populations in the placentome were evaluated in Holstein and Nelore cows. Twenty-two Holstein cows at the end of gestation with normal non-induced parturition (group I) and 10 Holstein cows with induced parturition (group II) were used in this study. In addition, groups III and IV were constituted by 10 Nelore cows at the end of gestation with normal non-induced parturition and 21 Nelore cows with induced parturition, respectivelly. Binucleate trophoblastic cells, epithelial caruncular cells and apoptotic bodies were quantified by light microscopy. Apoptosis was further evaluated by transmission electron microscopy, ELISA and DNA electrophoresis in... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Bovine; Placentome; Binucleate cell; Epithelial cell; Apoptosis. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200004 |
| |
|
|
| de Oliveira Pinheiro,Daniela; Conte,Hélio; Aparecida Gregório,Elisa. |
| Diatraea saccharalis, the main pest of sugarcane, has been controlled by Cotesia flavipes. Very little is known about the effect of parasitism on the host organs, including the midgut. The Lepidoptera midgut epithelium is composed of columnar, goblet, regenerative, and endocrine cells. Spherites have been described in columnar and regenerative cells of several Lepidoptera species, and presented a lot of functional meaning. We identified spherites in the midgut epithelial cells of non-parasitized D. saccharalis larvae analyzed the effect of parasitism on spherite morphology and distribution along the length of the midgut. Midgut fragments of both non-parasitized and parasitized larvae were processed for transmission electron microscopy. All the midgut... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spherite; Epithelial cell; Ultrastructure; Lepidoptera; Parasitism. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452008000100007 |
| |
|
|
|
