The microvasculature of the elasmobranch gill

Kenneth Olson, B. Kent

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Corrosion replicas were made of the gill vasculature of the spiny dogfish shark (S. acanthias) and little skate (R. erinacea) by methyl methacrylate perfusion via the ventral or dorsal aorta at 2.0-5.3 kPa. After tissue maceration the replicas were examined by light and scanning electron microscopy. In both species 3 vascular pathways were found: (1) the major pathway subserving the respiratory function of the gill, consisting of the afferent filamental artery which feeds into a medial afferent sinus (MA) from which arise the prelamellar arterioles (AL) leading to the lamellae, the postlamellar arterioles and efferent filamental artery (EA); (2) a nutrient circulation arising from the EA, supplying oxygenated blood to the filamental tissue, and anastomosing with the interlamellar vessels (IL); (3) a collateral circulation consisting of ILs which drain through channels interdigitating with the ALs and which then form a collateral reticulum, beneath the water channel epithelium, with vessels from the adjacent filaments. In the dogfish, small prelamellar arteriovenous anastomoses (PA) connect the MAs to the ILs with the same frequency as the ALs. PAs have not been found in the skate, but the efferent nutrient circulation is much more extensively developed. Many similarities exist between the elasmobranchs and teleosts in regard to the microvascular organization of the gill.

Original languageEnglish
Pages (from-to)49-63
Number of pages15
JournalCell and Tissue Research
Volume209
Issue number1
DOIs
StatePublished - Jul 1980

Fingerprint

Elasmobranchii
Microvessels
Nutrients
Arteries
Arterioles
Tissue
Aquaporins
Methacrylates
Squalus acanthias
Arteriovenous Anastomosis
Dogfish
Sharks
Food
Reticulum
Collateral Circulation
Blood
Corrosion
Electron Scanning Microscopy
Scanning electron microscopy
Blood Vessels

Keywords

  • Blood vessels
  • Gills
  • Osmoregulation
  • Raja erinacea
  • Respiration
  • Squalus acanthias

ASJC Scopus subject areas

  • Anatomy
  • Clinical Biochemistry
  • Cell Biology

Cite this

The microvasculature of the elasmobranch gill. / Olson, Kenneth; Kent, B.

In: Cell and Tissue Research, Vol. 209, No. 1, 07.1980, p. 49-63.

Research output: Contribution to journalArticle

Olson, Kenneth ; Kent, B. / The microvasculature of the elasmobranch gill. In: Cell and Tissue Research. 1980 ; Vol. 209, No. 1. pp. 49-63.
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