Relationship between metabolic rate in vitro and body mass in a marine teleost, porgy Pagrus major

Shin Oikawa, Yasuo Itazawa

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The rate of oxygen consumption of minced whole body was determined volumetrically, as an indication of metabolic rate in vitro (Min vitro), at 20°C in porgy Pagrus major ranging from 0.0002 g (just after hatch) to 2.9 g (67 days old) in body mass. A triphasic relationship was found between Min vitro of individual fish (μl.min-1) and wet body mass W (g). During the prolarval stage accompanied with the transitional period to the postlarval stage (0.00020-0.00023 g, 0-6 days old), the mass-specific metabolic rate in vitro (Min vitro/W in μl.g-1.min-1) increased with age (D in days) as expressed by an equation Min vitro/W = 3.88 + 0.74/D. During the postlarval stage (0.00031-0.003 g, 8-22 days old), Min vitro/W remained almost constant, independent of body mass following an equation Min vitro/W = 5.24 W-0.085. During the juvenile and adolescent stages (0.0047-2.9 g, 30-67 days old), Min vitro/W decreased with increasing body mass following an equation Min vitro/W = 1.66 W-0.235. These results correspond with the triphasic relationship between metabolism in vivo and body mass observed in intact porgy of 0.0002-270 g (Oikawa et al. 1991). It is concluded, therefore, that the dependence of mass-specific metabolic rate on body size exists in vitro as well as in vivo, during the early stages in the porgy. Based on these results, factors controlling the metabolism-size relationship are discussed.

Original languageEnglish
Pages (from-to)177-182
Number of pages6
JournalFish Physiology and Biochemistry
Volume10
Issue number3
DOIs
Publication statusPublished - Oct 1 1992

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porgy
Pagrus major
teleost
Metabolism
body mass
Hatches
Fish
Oxygen
metabolism
rate
In Vitro Techniques
oxygen consumption
body size
Body Size
Oxygen Consumption
Fishes

All Science Journal Classification (ASJC) codes

  • Physiology
  • Biochemistry
  • Aquatic Science

Cite this

Relationship between metabolic rate in vitro and body mass in a marine teleost, porgy Pagrus major. / Oikawa, Shin; Itazawa, Yasuo.

In: Fish Physiology and Biochemistry, Vol. 10, No. 3, 01.10.1992, p. 177-182.

Research output: Contribution to journalArticle

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abstract = "The rate of oxygen consumption of minced whole body was determined volumetrically, as an indication of metabolic rate in vitro (Min vitro), at 20°C in porgy Pagrus major ranging from 0.0002 g (just after hatch) to 2.9 g (67 days old) in body mass. A triphasic relationship was found between Min vitro of individual fish (μl.min-1) and wet body mass W (g). During the prolarval stage accompanied with the transitional period to the postlarval stage (0.00020-0.00023 g, 0-6 days old), the mass-specific metabolic rate in vitro (Min vitro/W in μl.g-1.min-1) increased with age (D in days) as expressed by an equation Min vitro/W = 3.88 + 0.74/D. During the postlarval stage (0.00031-0.003 g, 8-22 days old), Min vitro/W remained almost constant, independent of body mass following an equation Min vitro/W = 5.24 W-0.085. During the juvenile and adolescent stages (0.0047-2.9 g, 30-67 days old), Min vitro/W decreased with increasing body mass following an equation Min vitro/W = 1.66 W-0.235. These results correspond with the triphasic relationship between metabolism in vivo and body mass observed in intact porgy of 0.0002-270 g (Oikawa et al. 1991). It is concluded, therefore, that the dependence of mass-specific metabolic rate on body size exists in vitro as well as in vivo, during the early stages in the porgy. Based on these results, factors controlling the metabolism-size relationship are discussed.",
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