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Diving experience and the aerobic dive capacity of muskrats: does training produce a better diver?

Robert A. MacArthur^*, Gillian L. Weseen and Kevin L. Campbell

Department of Zoology, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2

View larger version (21K): [in a new window]   Fig. 1. Haematocrit and blood oxygen capacity of 12 surface-swimming (control) and 12 dive-conditioned muskrats prior to (pre-training) and following 9–11 weeks of training (post-training) in the laboratory (see text for details). Values are means + 1 S.E.M. For each variable, means sharing the same letter are not significantly different (P>0.05).

View larger version (13K): [in a new window]   Fig. 2. Total and site-specific oxygen storage capacity of 12 surface-swimming (control) and 12 dive-conditioned muskrats following 9–11 weeks of training in the laboratory (see text for details). Values are means + 1 S.E.M. Asterisks denote comparisons in which mean values of `divers' exceeded those of `surface swimmers' (P<0.05).