Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/18941
Tipo: Artigo
Título: Degeneration and cell regeneration in the midgut of Podisus nigrispinus (Heteroptera: Pentatomidae) during post-embryonic development
Autor(es): Teixeira, Aparecida das Dores
Fialho, Maria do Carmo Queiroz
Zanuncio, José Cola
Ramalho, Francisco de Souza
Serrão, José Eduardo
Abstract: Cell death, proliferation, and differentiation in some developmental stages of insects have been studied in the midgut of ametabolous, which undergo only continuous growth, and holometabolous, which undergo complete metamorphosis. However, in hemimetabolous insects, evolutionarily intermediate between ametabolous and holometabolous, midgut reorganization during the post-embryonic development has been poorly studied. The present study evaluates the post-embryonic development of the midgut of a hemimetabolous insect, Podisus nigrispinus, to test the hypothesis that these insects have programmed cell death and proliferation followed by differentiation of regenerative cells during midgut growth from nymphs to adult. The morphometrical data showed a 6-fold increase in midgut length from the first instar nymph to the adult, which did not result from an increase in the size of the midgut cells, suggesting that the growth of the midgut occurs by an increase in cell number. Cell death was rarely found in the midgut, whereas proliferation of regenerative cells occurred quite frequently. The growth of the midgut of P. nigrispinus appears to result from the proliferation of regenerative cells present in the epithelium; unlike ametabolous and holometabolous insects, the midgut of P. nigrispinus does not undergo extensive remodeling, as shown by the low frequency of digestive cell death.
Palavras-chave: Insect
Stinkbug
Metamorphosis
Hemimetabolous
Editor: Arthropod Structure & Development
Tipo de Acesso: Elsevier Ltd.
URI: http://dx.doi.org/10.1016/j.asd.2013.02.004
http://www.locus.ufv.br/handle/123456789/18941
Data do documento: 19-Fev-2013
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
artigo.pdf
  Until 2100-12-31
texto completo2,26 MBAdobe PDFVisualizar/Abrir ACESSO RESTRITO


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.