Effect of temperature acclimation on metabolism and hemocyanin binding affinities in two crayfish, Procambarus clarkii and Procambarus zonangulus

Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
Mickie L Powell, Stephen A Watts

Abstract

Procambarus clarkii and Procambarus zonangulus are two of the most widespread crayfish species in North America. In regions where their ranges overlap species composition can vary greatly. The physiological basis for this variable species composition is unknown. Temperature and oxygen level are two parameters that vary in shallow water habitats. We examined the metabolic rate and hemocyanin binding affinities in relation to thermal history. Temperature acclimation did not have the predicted effect on metabolic rate. Acclimation to high temperature (30 degrees C) decreased metabolic rate at 35 degrees C for both species. Low temperature acclimation (10 degrees C) resulted in 20% mortality in P. clarkii and 100% mortality in P. zonangulus when exposed to 35 degrees C. The range of P. clarkii is known to extend farther south than that of P. zonangulus, and this response may be a consequence of adaptations to higher temperatures in this range. Hemocyanin binding affinity was directly affected by assay and acclimation temperature. The highest P(50) values were recorded for crayfish of both species acclimated to 10 degrees C and assayed at 30 degrees C. There was also a shift in the isoelectric points of hemolymph proteins (possibly ...Continue Reading

References

Nov 7, 2000·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·H Decker, R Föll

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Citations

Sep 26, 2012·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Marion TwomeyMark C Emmerson
Nov 26, 2013·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·N FoucreauF Hervant
May 5, 2012·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Christopher P BonvillainChristopher C Green
Apr 23, 2015·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Zachary R StahlschmidtRachel L Luoma
Mar 5, 2014·Chemical Reviews·Edward I SolomonLi Tian

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