Ultrastructural changes in the abdominal midgut of the mosquito, Culiseta melanura, during the gonotrophic cycle

Scott Weaver, T. W. Scott

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Abdominal midguts of the mosquito, Culiseta melanura, were examined by light and electron microscopy 1 hr-14 days days after blood feeding. Epithelial cells were drastically altered from columnar to squamous in form after engorgement, and returned to columnar by day 4 after feeding. Accumulation of mitochondria along brush borders of digestive cells, followed by the appearance of large secondary lysosomes, accompanied blood digestion. Evidence was obtained that myelin-like material in the lysosomes, probably the result of mitochondrial autolysis, is extruded into the lumen. Digestive cells resumed their pre-blood meal appearance by 10-14 days post-engorgement. Regenerative cells were scattered throughout the basal portion of the epithelium, along with endocrine cells. Other midgut cells containing large, microvilli-lined apical cavities were identified in most specimens. No evidence of division or differentiation was obtained for any cell types.

Original languageEnglish (US)
Pages (from-to)895-909
Number of pages15
JournalTissue and Cell
Volume22
Issue number6
DOIs
StatePublished - 1990
Externally publishedYes

Fingerprint

Culiseta melanura
gonotrophic cycle
Culicidae
midgut
engorgement
Microvilli
Lysosomes
lysosomes
cells
microvilli
Autolysis
Endocrine Cells
Myelin Sheath
autolysis
myelin sheath
blood
blood meal
Meals
Digestion
Electron Microscopy

Keywords

  • Culiseta melanura
  • epithelium
  • Insecta
  • midgut
  • Mosquito
  • ultrastructure

ASJC Scopus subject areas

  • Insect Science
  • Cell Biology

Cite this

Ultrastructural changes in the abdominal midgut of the mosquito, Culiseta melanura, during the gonotrophic cycle. / Weaver, Scott; Scott, T. W.

In: Tissue and Cell, Vol. 22, No. 6, 1990, p. 895-909.

Research output: Contribution to journalArticle

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