... without the camera. Despite shorter diving durations with the camera, the penguins were still successful at prey capture in 80 % of 91 dives greater than 1 min in duration. Prey included the sub-ice fish Pagothenia borchgrevinki . Hunting ascents (from depth to within 5 m of the surface) occurred in 85...

...Lena Sundin; Michael Axelsson; William Davison; Malcolm E. Forster ABSTRACT We have investigated the effects of adenosine on the cardiovascular system of the Antarctic fish Pagothenia borchgrevinki . Continuous measurements of ventral and dorsal aortic blood pressures, heart rate (f H) and ventral...

...Lena Sundin; William Davison; Malcolm Forster; Michael Axelsson ABSTRACT This study was conducted to describe the cardiovascular responses to intra-arterial injections of serotonin in the Antarctic fish Pagothenia borchgrevinki and to elucidate the underlying mechanisms. Immunohistochemistry...

...Michael Axelsson; Bill Davison; Malcolm Forster; Stefan Nilsson ABSTRACT The mechanisms of cardiovascular control in the Antarctic fish Pagothenia borchgrevinki were investigated during rest and swimming exercise using pharmacological tools to reveal the nature of the control systems involved...