Insect acid-base physiology

Research output: Contribution to journalReview article

88 Scopus citations

Abstract

Acid-base status influences many aspects of insect biology, including insect distributions in aquatic systems, insect-plant and insect-pathogen interactions, membrane transport phenomena, and the mode of action of pesticides. Acid-base status in the hemolymph and gut lumen of insects is generally well regulated but varies somewhat within individuals owing to effects of temperature, activity, discontinuous ventilation, and diet. The pH of the midgut lumen varies with the phylogeny and feeding ecology. Insect fluids have buffer values similar to those of vertebrates. The respiratory system participates in acid-base homeostasis primarily by regulating the internal carbon dioxide (partial) pressure via changes in spiracular opening and convective ventilation. The epithelia of the renal system and gut participate in hemolymph acid-base regulation by varying acid-base transport in response to organismal acid-base status. Evidence to date suggests that the dominant mechanisms for control of renal acid-base excretion involve hormonal regulation of H+-V-ATPase activity.

Original languageEnglish (US)
Pages (from-to)221-250
Number of pages30
JournalAnnual Review of Entomology
Volume46
DOIs
StatePublished - Apr 28 2001

Keywords

  • Ion transport
  • Metabolism
  • PH
  • Ventilation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science

Fingerprint Dive into the research topics of 'Insect acid-base physiology'. Together they form a unique fingerprint.

  • Cite this