Effects of perfusion pressure on the morphology of the central sinus in the trout gill filament

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The central sinus, a prominent component of the nonrespiratory, ionoregulatory vasculature of the fish gill has been variously described as a simple sack-like structure in the eel A. anguilla and as an intricate series of parallel vessels in the catfish I. punctatus. To resolve whether these differences are interspecific or methodological, corrosion replicas of the central sinus in the rainbow trout (Salmo gairdneri) were prepared at physiological and superphysiological perfusion pressures with a low-viscosity methyl methacrylate resin. At physiological perfusion pressure (30 mmHg, 4.0 kPa), the central sinus vasculature appears as a series of parallel vessels traversing the filament beneath, and in register with, the interlamellar filamental epithelium. At elevated perfusion pressure (55-65 mmHg, 7.3-8.7 kPa) the sinus becomes greatly distended and sack-like and the vessels appear to coalesce. These changes are most pronounced in the basal area of the filament and along the efferent filamental artery. The results show that the interpretation of the vascular organization of the central sinus is highly dependent on methodology. In addition, the sensitivity of the central sinus to changes in perfusion pressure suggests that the sinus plays a dynamic role in intrabranchial hemodynamics.

Original languageEnglish
Pages (from-to)319-325
Number of pages7
JournalCell and Tissue Research
Volume232
Issue number2
DOIs
StatePublished - Jul 1983

Fingerprint

Trout
Perfusion
Pressure
Oncorhynchus mykiss
Anguilla
Eels
Catfishes
Corrosion
Methacrylates
Hemodynamics
Viscosity
Fish
Blood Vessels
Fishes
Epithelium
Resins
Arteries

Keywords

  • Blood vessels
  • Central sinus
  • Corrosion replicas
  • Gills
  • Salmo gairdneri

ASJC Scopus subject areas

  • Anatomy
  • Clinical Biochemistry
  • Cell Biology

Cite this

Effects of perfusion pressure on the morphology of the central sinus in the trout gill filament. / Olson, Kenneth.

In: Cell and Tissue Research, Vol. 232, No. 2, 07.1983, p. 319-325.

Research output: Contribution to journalArticle

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