Upper thermal limits of the hearts of Arctic cod Boreogadus saida: adults compared with larvae

2015/11/25 by H. E. Drost, Helen Drost, Jeremy Fisher +9 · 8 citations
Environmental Science · Earth and Planetary Sciences · #Physiological and biochemical adaptations #Ocean Acidification Effects and Responses #Marine and fisheries research

paper · doi:10.1111/jfb.12807

Abstract

Wild adult and reared larval Boreogadus saida were acclimated to 3·5° C before testing their cardiac response to acute warming. Heart rate transition temperatures during warming were similar for adult and larval hearts, except that the maximum temperature for heart rate was 3° C warmer for adults. Thus, in a rapidly warming Arctic Ocean, the upper temperature limit for larval rather than adult B. saida appears more likely to dictate the southern range of the species.

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