Diving response

Hochachka, P.W. (2000). Pinniped diving response mechanism and evolution A window on the paradigm of comparative biochemistry and physiology. Comp. Biochem. Physiol. 126A 435-458. 

EVOLUTION OF THE DIVING RESPONSE IN PINNIPEDS TRADITIONAL VERSUS COMPARATIVE APPROACHES... 

As emphasized above, since the 1930s, physiologists working on diving have looked at the problem of evolution of the diving response in very qualitative terms and assumed that all the key components of the diving response (apnea, bradycardia, and peripheral vasoconstriction with hypometabolism... 

When the PIC analyses of the diving response were extended, Mottishaw et al. (1999) found that some characters correlate well with dive... 

Given our knowledge of the mechanisms of the diving response, the present picture of their evolution leads to two general principles in the evolution of the diving response. 

Figure 4.10. (A) The diagram summarizes the integration of reflexes in initiation, development, and reinforcement of the diving response in mammals... 

DIVING RESPONSE PHYSIOLOGY HAS EVOLVED SEVERAL TIMES... 

Hochachka, P.W. (2000). Pinniped diving response mechanism and evolution A window on the paradigm of comparative biochemistry and physiology. Comp. Physiol. Biochem. 126A 435-458. Hochachka, P.W. and R.A. Foreman III (1993). Phocid and cetacean blueprints of muscle metabolism. Can. J. Zool. 71 2089-2098. 

Hochachka, P.W., and M. Guppy (1987). Metabolic Arrest and the Control of Biological Time. Cambridge Harvard University Press. Hochachka, P.W., and P.D. Mottishaw (1998). Evolution and adaptation of the diving response Phocids and Otariids. In Cold Ocean Symposia, pp. 391 431, ed. H.O. Portner and R.C, Playle, Cambridge Cambridge University Press. Hochachka, P.W., and G.N. Somero (1984). Biochemical Adaptation. Princeton Princeton University Press. 

Thornton, S.J. (2000). Investigations into the diving response of northern elephant seals (Mironnga angustirostris) using Magnetic Resonance... 

---