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Houston AH, Gingras-Bedard JH. Variable versus constant temperature acclimation regimes: Effects on hemoglobin isomorph profile in goldfish,Carassius auratus. Fish Physiol Biochem. 1994;13(6):445-50doi: 10.1007/BF00004327.
Houston, A. H., & Gingras-Bedard, J. H. (1994). Variable versus constant temperature acclimation regimes: Effects on hemoglobin isomorph profile in goldfish,Carassius auratus. Fish physiology and biochemistry, 13(6), 445-50. https://doi.org/10.1007/BF00004327
Houston, A H, and Gingras-Bedard, J H. "Variable versus constant temperature acclimation regimes: Effects on hemoglobin isomorph profile in goldfish,Carassius auratus." Fish physiology and biochemistry vol. 13,6 (1994): 445-50. doi: https://doi.org/10.1007/BF00004327
Houston AH, Gingras-Bedard JH. Variable versus constant temperature acclimation regimes: Effects on hemoglobin isomorph profile in goldfish,Carassius auratus. Fish Physiol Biochem. 1994 Dec;13(6):445-50. doi: 10.1007/BF00004327. PMID: 24197140.
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Fish Physiol Biochem. 1994 Dec;13(6):445-50. doi: 10.1007/BF00004327.

Variable versus constant temperature acclimation regimes: Effects on hemoglobin isomorph profile in goldfish,Carassius auratus.

Fish physiology and biochemistry

A H Houston, J H Gingras-Bedard

Affiliations

  1. Department of Biological Sciences, Brock University St. Catherines, Ontario, L2S 3A1, Canada.

PMID: 24197140 DOI: 10.1007/BF00004327

Abstract

Goldfish,Carassius auratus, were acclimated for 2 to 3.5 weeks to three temperature regimes: [1] temporally-constant (10, 20 and 30°C), [2] diurnally-cycling (20 ± 10°C) and [3] randomly-fluctuating (± 2°C at approximately 2h intervals between extremes of 10 and 30°C). No significant differences in hematocrit were evident. Hemoglobin levels in fish at constant 30°C and under randomly fluctuating temperature were significantly elevated. Of the three hemoglobin isomorphs observed, the two minor components (G1, G3) tended to decrease in relative abundance with increase in constant temperature, but increased under varying temperature regimes. The converse was true of the principal hemoglobin, G2. Extent of isomorph variation was correlated with extent of temperature variability. These observations confirm that temperature variability significantly effects thermoacclimatory response. The functional significance of changes in isomorph abundances during the acclimatory process is considered.

References

  1. Comp Biochem Physiol Comp Physiol. 1992 May;102(1):107-10 - PubMed
  2. Fish Physiol Biochem. 1991 Mar;9(1):39-50 - PubMed
  3. Can J Zool. 1976 Oct;54(10):1737-41 - PubMed

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