Coronary vascular volume remodelling in rainbow trout Oncorhynchus mykiss

Authors


Department of Zoology, 6270 University Blvd, University of British Columbia; Vancouver, BC, V6T 1Z4 Canada. Tel.: +1 604 822 6602 or +1 604 666 6647; fax: +1 604 822 2184; email: farrellt@interchange.ubc.ca

Abstract

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.

Ancillary