Summary
The difficulties of working on living squid have caused research into their cardiovascular performance to lag behind that done on octopods. Nonetheless, data that we do possess show squid to have cardiovascular capabilities above those of other cephalopods. In general, heart rate, blood pressure and cardiac output is higher for squid than for the other coleoids andNautilus. This higher circulatory system capability is in keeping with squid being relatively large, fast-swimming, pelagic cephalopods.
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Bourne, G.B. Hemodynamics in squid. Experientia 43, 500–502 (1987). https://doi.org/10.1007/BF02143578
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DOI: https://doi.org/10.1007/BF02143578