The oxygen consumption of goldfish (Carassius auratus L.) after removal or autotransplantation of the pituitary gland

After either pituitary removal or pituitary autotransplantation, the routine oxygen consumption of goldfish is reduced significantly from control levels. A similar pattern appears to be reflected by the oxygen consumption of white muscle tissue.

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Action of adenosine on energetics, protein synthesis and K(+) homeostasis in teleost hepatocytes

Journal of Experimental Biology ◽

10.1242/jeb.203.17.2657 ◽

2000 ◽

Vol 203 (17) ◽

pp. 2657-2665 ◽

Cited By ~ 2

Author(s):

G. Krumschnabel ◽

C. Biasi ◽

W. Wieser

Keyword(s):

Protein Synthesis ◽

Oxygen Consumption ◽

Atpase Activity ◽

Oncorhynchus Mykiss ◽

Carassius Auratus ◽

Goldfish Carassius Auratus ◽

Inhibition Of Protein Synthesis ◽

Rate Of Oxygen Consumption ◽

A1 Receptor ◽

Lactate Formation

In a comparative study, we analysed the effects of adenosine on the energetics, protein synthesis and K(+)homeostasis of hepatocytes from the anoxia-tolerant goldfish Carassius auratus and the anoxia-intolerant trout Oncorhynchus mykiss. The rate of oxygen consumption did not respond immediately to the addition of adenosine to the cells from either species, but showed a significant decrease in trout hepatocytes after 30 min. The anaerobic rate of lactate formation was not significantly affected by adenosine in goldfish hepatocytes, but was increased in trout cells. We also studied the effects of adenosine on the two most prominent ATP consumers in these cells, protein synthesis and Na(+)/K(+)-ATPase activity. Under aerobic conditions, adenosine inhibited protein synthesis of hepatocytes from goldfish by 51% and of hepatocytes from trout by 32%. During anoxia, the rate of protein synthesis decreased by approximately 50% in goldfish hepatocytes and by 90% in trout hepatocytes, and this decrease was not altered by the presence of adenosine. Adenosine inhibited normoxic Na(+)/K(+)-ATPase activity and K(+)efflux by 20–35% in the cells of both species. An investigation into the mechanism underlying the inhibition of protein synthesis by adenosine indicated that, in the goldfish cells, adenosine acts via a membrane receptor-mediated pathway, i.e. the effect of adenosine was abolished by applying the A1 receptor antagonist 8-phenyltheophylline. In the trout, however, the uptake of adenosine into hepatocytes seems to be required for an effect on protein synthesis. [Ca(2+)](i) does not seem to be involved in the inhibition of protein synthesis by adenosine.

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Regulatory properties of AMP-deaminase from lateral red muscle and dorsal white muscle of goldfish, Carassius auratus (L.)

Comparative Biochemistry and Physiology Part B Comparative Biochemistry ◽

10.1016/0305-0491(81)90331-x ◽

1981 ◽

Vol 69 (3) ◽

pp. 413-423 ◽

Cited By ~ 5

Author(s):

Are Vaan Waarde ◽

Fanja Kesbeke

Keyword(s):

Carassius Auratus ◽

White Muscle ◽

Amp Deaminase ◽

Goldfish Carassius Auratus ◽

Red Muscle ◽

Regulatory Properties

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Changes in the Pituitary Gland of Goldfish, Carassius auratus, during Diet-Controlled Gonadal Regression

Copeia ◽

10.2307/1441894 ◽

1967 ◽

Vol 1967 (4) ◽

pp. 827 ◽

Cited By ~ 2

Author(s):

Robert P. Bogenschutz ◽

Howard P. Clemens

Keyword(s):

Pituitary Gland ◽

Carassius Auratus ◽

Goldfish Carassius Auratus

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RESPIRATION OF FISHES WITH SPECIAL EMPHASIS ON STANDARD OXYGEN CONSUMPTION: I. INFLUENCE OF WEIGHT AND TEMPERATURE ON RESPIRATION OF GOLDFISH, CARASSIUS AURATUS L.

Canadian Journal of Zoology ◽

10.1139/z64-015 ◽

1964 ◽

Vol 42 (2) ◽

pp. 161-175 ◽

Cited By ~ 116

Author(s):

F. W. H. Beamish ◽

P. S. Mookherjii

Keyword(s):

Oxygen Consumption ◽

Spontaneous Activity ◽

Carassius Auratus ◽

Goldfish Carassius Auratus ◽

Simultaneous Measurements ◽

Proportionate Change ◽

Rate Of Oxygen Consumption ◽

Standard Rate ◽

The Mean ◽

External Stimuli

Standard oxygen consumption of goldfish was estimated in relation to weight and temperature from simultaneous measurements of routine oxygen uptake and spontaneous activity. The relation between weight and standard oxygen consumption was expressed as a logarithmic linear regression. For a given shift in temperature, the proportionate change in standard oxygen consumption appears to be independent of weight. The mean slope of the regressions was found to be 0.850.The standard rate of a 100-g goldfish increased linearly, on a semilogarithmic grid, over the temperature range of 10 to 35 °C. The estimates found in the present study were less than the lowest applicable values that could be found in the literature.The average routine rate of oxygen consumption suggests that goldfish display a considerable amount of spontaneous activity despite the elimination of external stimuli.

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