.... * Author for correspondence (e-mail: [email protected]) 10 1 2003 © The Company of Biologists Limited 2003 2003 dive conditioning body oxygen store dive behaviour myoglobin haemoglobin muscle buffering capacity metabolism aerobic dive limit muskrat Ondatra zibethicus...

...Pierre E. Signore; David R. Jones ABSTRACT Neural control of the cardiac responses to exercise in air (running) and under water (diving) was studied in the muskrat (Ondatra zibethicus) by means of acute pharmacological blockade with the muscarinic blocker atropine and the β-adrenergic blocker...

...Pierre E. Signore; David R. Jones ABSTRACT Neural control of free and forced diving bradycardia and peripheral resistance was studied in the muskrat (Ondatra zibethicus) by means of acute pharmacological blockade with the muscarinic blocker atropine, the α -adrenergic blocker phentolamine and the β...

..., the muskrat (Ondatra zibethicus), is able to survive ischemia and hypoxia better than the heart of a similarly sized non-diving rodent, the guinea pig (McKean and Landon, 1982 ; McKean, 1984). We hypothesized that the K ATP channel might be involved in the explanation for this species difference. 25 5...

... recovery from hypoxia, ischemia or acidosis. Muskrats (Ondatra zibethicus) are among the most common North American freshwater diving mammals. Although muskrats are small (1000 g) and thus have a large mass-specific oxygen consumption (Fish, 1983), their submersion time in a laboratory setting...