Jeffery M. Morrissette
Stanford University
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Featured researches published by Jeffery M. Morrissette.
The Journal of Experimental Biology | 2004
Jason M. Blank; Jeffery M. Morrissette; Ana M. Landeira-Fernandez; Susanna B. Blackwell; Thomas D. Williams; Barbara A. Block
SUMMARY This study reports the cardiovascular physiology of the Pacific bluefin tuna (Thunnus orientalis) in an in situ heart preparation. The performance of the Pacific bluefin tuna heart was examined at temperatures from 30°C down to 2°C. Heart rates ranged from 156 beats min–1 at 30°C to 13 beats min–1 at 2°C. Maximal stroke volumes were 1.1 ml kg–1 at 25°C and 1.3 ml kg–1 at 2°C. Maximal cardiac outputs were 18.1 ml kg–1 min–1 at 2°C and 106 ml kg–1 min–1 at 25°C. These data indicate that cardiovascular function in the Pacific bluefin tuna exhibits a strong temperature dependence, but cardiac function is retained at temperatures colder than those tolerated by tropical tunas. The Pacific bluefin tunas cardiac performance in the cold may be a key adaptation supporting the broad thermal niche of the bluefin tuna group in the wild. In situ data from Pacific bluefin are compared to in situ measurements of cardiac performance in yellowfin tuna and preliminary results from albacore tuna.
Physiological and Biochemical Zoology | 2007
Jason M. Blank; Charles J. Farwell; Jeffery M. Morrissette; Robert J. Schallert; Barbara A. Block
Bluefin tuna are endothermic and have higher temperatures, heart rates, and cardiac outputs than tropical tuna. We hypothesized that the increased cardiovascular capacity to deliver oxygen in bluefin may be associated with the evolution of higher metabolic rates. This study measured the oxygen consumption of juvenile Pacific bluefin Thunnus orientalis and yellowfin tuna Thunnus albacares swimming in a swim‐tunnel respirometer at 20°C. Oxygen consumption (Ṁo2) of bluefin (7.1–9.4 kg) ranged from \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape
The Journal of Experimental Biology | 2007
Jason M. Blank; Jeffery M. Morrissette; Charles J. Farwell; Matthew Price; Robert J. Schallert; Barbara A. Block
American Journal of Physiology-cell Physiology | 1998
Jens P. C. Franck; Jeffery M. Morrissette; John Keen; Richard L. Londraville; Mark Beamsley; Barbara A. Block
235\pm 38
Science | 2005
Kevin C. Weng; Pedro C. Castilho; Jeffery M. Morrissette; Ana M. Landeira-Fernandez; David Holts; Robert J. Schallert; Kenneth J. Goldman; Barbara A. Block
American Journal of Physiology-regulatory Integrative and Comparative Physiology | 2004
Ana M. Landeira-Fernandez; Jeffery M. Morrissette; Jason M. Blank; Barbara A. Block
\end{document} mg kg−1 h−1 at 0.85 body length (BL) s−1 to \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape
The Journal of Experimental Biology | 2002
Jason M. Blank; Jeffery M. Morrissette; Peter S. Davie; Barbara A. Block
The Journal of Experimental Biology | 2003
Jeffery M. Morrissette; Jens P. G. Franck; Barbara A. Block
498\pm 55
Comparative Biochemistry and Physiology A-molecular & Integrative Physiology | 2007
Pedro C. Castilho; Ana M. Landeira-Fernandez; Jeffery M. Morrissette; Barbara A. Block
American Journal of Physiology-regulatory Integrative and Comparative Physiology | 2000
Jeffery M. Morrissette; Le Xu; Alexandra Nelson; Gerhard Meissner; Barbara A. Block
\end{document} mg kg−1 h−1 at 1.80 BL s−1. Minimal metabolic rates of swimming bluefin were \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape