oa African Zoology - Oxygen consumption of the estuarine round herring Gilchristella aestuarius (Gilchrist & Thompson)

Volume 20, Issue 1
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



Routine oxygen consumption of Gilchristella aestuarius was determined using a through-flow system. Experiments were carried out on summer and winter acclimatized fish. The effects of three acclimation temperatures (15, 20 and 25�C) and three salinities 10, 20 and 35�/00) were investigated. The results indicate that the mean b value was 0,77 and that the metabolic rate was salinity independent but increased with increasing temperature with a Q10 of 2,3. Oxygen consumption over 24 h showed a peak at 08h00 and 15h00 which coincided with feeding peaks found elsewhere.

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