Coronary vascular volume remodelling in rainbow trout Oncorhynchus mykiss

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The 34% increase in relative ventricular mass (Mrv) resulting from chronic anaemia (induced by an intraperitoneal injection of phenylhydrazine hydrochloride) was accompanied by a 117% increase in coronary vascular volume of diploid rainbow trout Oncorhynchus mykiss. Coronary vascular volume of normocythemic triploid fish was similar to that of normocythemic diploid fish despite a larger Mrv. These observations, in combination with previous studies, suggest that the vascularity of compact myocardium in O. mykiss can vary independently of Mrv.

Keywords: blood volume; coronary circulation; fish; myocardium; oxygen; triploid

Document Type: Regular Paper


Affiliations: Department of Biological Sciences, 8888 University Drive, Simon Fraser University, Burnaby, BC, V5A 1S6 Canada

Publication date: November 1, 2009

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