... ascent. Our ballistocardiogram method may be applied to mine heart rates from previously collected accelerometery data and expand our understanding of comparative cardiovascular physiology. * Author for correspondence ( [email protected] ) Competing interests The authors declare...

... et al . 1997 ). A clear distinction between the two species is that stroke volume does not increase with sustained exercise in the yellowfin (for a discussion, see Korsmeyer et al . 1997 ). oxygen cardiovascular physiology swimming exercise blood gases tuna Thunnus albacares ©...

... and Uddman, 1988 ; Dahlström et al . 1988 ; Mione et al . 1990 ). cardiovascular physiology elasmobranch neuropeptides adrenaline noradrenaline dogfish Squalus acanthias © 1992 by Company of Biologists 1992 24 3 1992 ...