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Ultrastructural changes accompanying secretion and cell death in the molting glands of an insect (Oncopeltus).

Publication ,  Journal Article
Smith, WA; Nijhout, HF
Published in: Tissue & cell
January 1982

During the fifth (last) larval instar of Oncopeltus fasciatus, morphological changes in the molting glands associated with ecdysone secretion include a increase in cytoplasmic volume relative to that of the nucleus, increased amounts of rough endoplasmic reticulum and mitochondria, and the formation of deep infoldings of the plasma membrane. On the sixth day of the fifth instar large electron-lucent areas become apparent beneath the basement membrane; however, the glands remain intact until the seventh (last) day of the instar when a dramatic fragmentation of the cytoplasm, and condensation and fragmentation of the nucleus are observed. It is likely that such changes occur rapidly, just prior to the time of ecdysis to an adult. Cell death in the molting glands of Oncopeltus is markedly different from that described for the molting glands of other insect species in that autophagic vacuoles are not observed prior to a complete loss of cellular integrity.

Duke Scholars

Published In

Tissue & cell

DOI

EISSN

1532-3072

ISSN

0040-8166

Publication Date

January 1982

Volume

14

Issue

2

Start / End Page

243 / 252

Related Subject Headings

  • Vacuoles
  • Microscopy, Electron
  • Metamorphosis, Biological
  • Hemiptera
  • Exocrine Glands
  • Ecdysone
  • Cytoplasm
  • Cell Survival
  • Cell Nucleus
  • Cell Membrane
 

Citation

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ICMJE
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Smith, W. A., & Nijhout, H. F. (1982). Ultrastructural changes accompanying secretion and cell death in the molting glands of an insect (Oncopeltus). Tissue & Cell, 14(2), 243–252. https://doi.org/10.1016/0040-8166(82)90022-2
Smith, W. A., and H. F. Nijhout. “Ultrastructural changes accompanying secretion and cell death in the molting glands of an insect (Oncopeltus).Tissue & Cell 14, no. 2 (January 1982): 243–52. https://doi.org/10.1016/0040-8166(82)90022-2.
Smith, W. A., and H. F. Nijhout. “Ultrastructural changes accompanying secretion and cell death in the molting glands of an insect (Oncopeltus).Tissue & Cell, vol. 14, no. 2, Jan. 1982, pp. 243–52. Epmc, doi:10.1016/0040-8166(82)90022-2.
Journal cover image

Published In

Tissue & cell

DOI

EISSN

1532-3072

ISSN

0040-8166

Publication Date

January 1982

Volume

14

Issue

2

Start / End Page

243 / 252

Related Subject Headings

  • Vacuoles
  • Microscopy, Electron
  • Metamorphosis, Biological
  • Hemiptera
  • Exocrine Glands
  • Ecdysone
  • Cytoplasm
  • Cell Survival
  • Cell Nucleus
  • Cell Membrane