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Ontogenetic change in the relationship between metabolic rate and body mass in a sea bream Pagrus major (Temminck & Schlegel) (1991)

Oikawa, S. ; Itazawa, Y. ; Gotoh, M.

Oxford, UK : Blackwell Publishing Ltd

Journal of fish biology 38 (1991), S. 0

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ISSN: 1095-8649

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology

Notes: Ontogenetic changes in the relationship between resting rate of oxygen consumption and wet body mass were examined at 20° C with the sea bream Pagrus major ranging from 0.00020 g (weight just after hatching) to 270 g (weight at 530 days old). There was a triphasic relationship between oxygen consumption of an individual fish M (μl min−1) and body mass W(g). During a very early stage (weight 0.00020–0.00025 g), corresponding to the pre-larval stage and with the transitional period to the post-larval stage, there was no substantial change in body mass. The mass–specific metabolic rate M/W (μl g−1 min 1) showed no clear relationship to body mass as expressed by the equation M/ W=4.86 + 1.47 D, where D is age in days. During the post-larval stage (weight 0.00031–0.005 g), M/W remained almost constant independent of body mass following the expression M= 12.5 W0.949. During the juvenile and later stages (weight 0.005–270 g), M/ W decreased with increasing body mass following the expression M= 6.3 W0.821 which is significantly different from the expression for the post-larval stage (P 〈 0.001). Ontogenetic changes in the metabolism-body mass relationship are discussed from the viewpoint of relative growth of organs with different metabolic activities.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1095-8649.1991.tb03136.x

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Metabolic rates in excised tissues of carp (1983)

Itazawa, Y. ; Oikawa, S.

Springer

Cellular and molecular life sciences 39 (1983), S. 160-161

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ISSN: 1420-9071

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Medicine

Notes: Summary Oxygen consumption in vitro of carp tissues ranged from 7.60 μl·min−1·g−1 for brain to undetectable for fat in the following order: brain, kidney, intestine, dark muscle, hepatopancreas, ventricle, gill filaments, testis, ovary, erythrocytes, vertebrae, ordinary muscle, blood, and fat. Summated oxygen consumption in vitro of the tissues approximately coincided with oxygen consumption in vivo of intact animal.