Respiratory gas exchange in the resting starry flounder, Platichthys stellatus: a comparison with other teleosts.

C. M. Wood, B. R. McMahon, D. G. McDonald

Research output: Contribution to journalArticle

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Abstract

A wide range of respiratory, ventilatory, and cardiovascular parameters have been recorded under completely resting conditions in the starry flounder (Platichthys stellatus), a generally inactive benthic teleost. The results differ in a number of important respects from those of a previous study on the same species. The present data have also been compared with those reported for the active pelagic rainbow trout (Salmo gairdneri) and for other teleost species. Of particular note in the flounder, relative to the trout, are low arterial and venous PO2's, a low arterial-venous O2 content difference, a low transfer factor and high diffusion gradient for O2 across the gills, a high in vivo blood O2 affinity, a high cardiac output and stroke volume accompanied by a low peripheral vascular resistance, a low ventilation volume, a low ventilation-perfusion ratio, and a low capacity-rate ratio for O2 exchange at the gills. Parameters of CO2 transport and acid-base regulation appear conventional, though blood CO2 contents and lactate concentrations are low. The respiratory strategies of inactive versus active, and benthic versus pelagic teleosts are discussed.

Original languageEnglish
Pages (from-to)167-179
Number of pages13
JournalJournal of Experimental Biology
Volume78
StatePublished - Feb 1 1979

Fingerprint

Platichthys stellatus
respiratory gases
Flounder
gas exchange
teleost
Oncorhynchus mykiss
gills
Gases
Vascular Resistance
ventilation
blood
flounder
cardiac output
Ventilation-Perfusion Ratio
stroke
blood vessels
High Cardiac Output
trout
lactates
Transfer Factor

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Agricultural and Biological Sciences (miscellaneous)

Cite this

Respiratory gas exchange in the resting starry flounder, Platichthys stellatus : a comparison with other teleosts. / Wood, C. M.; McMahon, B. R.; McDonald, D. G.

In: Journal of Experimental Biology, Vol. 78, 01.02.1979, p. 167-179.

Research output: Contribution to journalArticle

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