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 language | English |
|---|---|
| Pages (from-to) | 177-182 |
| Number of pages | 6 |
| Journal | Fish Physiology and Biochemistry |
| Volume | 10 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Oct 1 1992 |
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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 journal › Article
}
TY - JOUR
T1 - Relationship between metabolic rate in vitro and body mass in a marine teleost, porgy Pagrus major
AU - Oikawa, Shin
AU - Itazawa, Yasuo
PY - 1992/10/1
Y1 - 1992/10/1
N2 - 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.
AB - 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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UR - http://www.scopus.com/inward/citedby.url?scp=0000096120&partnerID=8YFLogxK
U2 - 10.1007/BF00004511
DO - 10.1007/BF00004511
M3 - Article
C2 - 24214270
AN - SCOPUS:0000096120
VL - 10
SP - 177
EP - 182
JO - Fish Physiology and Biochemistry
JF - Fish Physiology and Biochemistry
SN - 0920-1742
IS - 3
ER -