Individual variation in the rate of oxygen consumption by zebrafish embryos

Individual variation in the rate of oxygen consumption by zebrafish embryos A sensitive microsensor‐based method was used to measure oxygen consumption of individual zebrafish Danio rerio embryos at 6 h intervals from 24 to 75 h post‐fertilization. An increase in oxygen consumption rates from 4·54 to 8·29 nmol O2 h−1 was found during this period. At the individual level the differences in oxygen consumption rates caused the total oxygen consumption from 24 to 75 h post‐fertilization to vary between 0·261 and 0·462 μmol O2 per individual with a mean of 0·379 μmol O2 per individual. A separate carbon mass balance study corroborated the mean total oxygen consumption obtained by yielding a respiratory quotient of 0·80 for this period. These results suggest that there is significant intraspecific variation in the metabolic rate of developing zebrafish embryos, which may influence other early life‐history traits such as growth and starvation resistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Fish Biology Wiley

Individual variation in the rate of oxygen consumption by zebrafish embryos

Journal of Fish Biology, Volume 64 (5) – May 1, 2004

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Publisher
Wiley
Copyright
Copyright © 2004 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0022-1112
eISSN
1095-8649
D.O.I.
10.1111/j.0022-1112.2004.00391.x
Publisher site
See Article on Publisher Site

Abstract

A sensitive microsensor‐based method was used to measure oxygen consumption of individual zebrafish Danio rerio embryos at 6 h intervals from 24 to 75 h post‐fertilization. An increase in oxygen consumption rates from 4·54 to 8·29 nmol O2 h−1 was found during this period. At the individual level the differences in oxygen consumption rates caused the total oxygen consumption from 24 to 75 h post‐fertilization to vary between 0·261 and 0·462 μmol O2 per individual with a mean of 0·379 μmol O2 per individual. A separate carbon mass balance study corroborated the mean total oxygen consumption obtained by yielding a respiratory quotient of 0·80 for this period. These results suggest that there is significant intraspecific variation in the metabolic rate of developing zebrafish embryos, which may influence other early life‐history traits such as growth and starvation resistance.

Journal

Journal of Fish BiologyWiley

Published: May 1, 2004

References

  • Respiration and nitrogen metabolism of Atlantic halibut eggs ( Hippoglossus hippoglossus )
    Finn, Finn; Fyhn, Fyhn; Evjen, Evjen
  • Individual variation in early life‐history traits in brown trout
    Vøllestad, Vøllestad; Lillehammer, Lillehammer

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