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Oxygen consumption of the lobster,Homarus americanus milne-edwards

Sauerstoffverbrauch des HummersHomarus americanus Milne-Edwards

Kurzfassung

Bei einer Gruppe von 25 Hummern wurde der Sauerstoffverbrauch in Dauerfluß-Respirometern gemessen. Bei 10° C erwies er sich als im wesentlichen konstant über einen Bereich der Sauerstoffkonzentration im umgebenden Wasser von 1,0 bis 8,5 mg/l. Bei Gruppen von 35 und 50 Hummern, welche bei 15° C getestet wurden, nahm der Sauerstoffverbrauch jedoch mit fallender Sauerstoffkonzentration etwas ab. Anstieg der Individuenzahl pro Raumeinheit (“crowding”) führte zu steigender Bewegungsaktivität und zu erhöhtem Sauerstoffverbrauch. Nahrungsaufnahme verursachte fast eine Verdoppelung des Sauerstoffverbrauchs. Kleine Individuen verbrauchen pro Gewichtseinheit mehr Sauerstoff als große. In manometrischen Respirometern stieg der Sauerstoffverbrauch bei hohen Sauerstoffkonzentrationen im umgebenden Wasser mit der Temperatur. Bei 6° bis 25° C war der Sauerstoffverbrauch in der Luft wesentlich geringer als im Wasser.

Summary

1. Oxygen consumption by a group of 25 lobsters was essentially constant over a range of ambient oxygen concentrations from 1.0 to 8.5 mg/l. Consumption by groups of 35 and 50 lobsters at 15° C decreased as the concentration decreased.

2. Oxygen consumption by individuals at 10° and 15° C increased as the oxygen concentration increased.

3. Oxygen consumption increased as activity increased with crowding.

4. Oxygen consumption almost doubled after feeding.

5. Oxygen consumption per unit weight decreased with increasing size.

6. The average rate of oxygen consumption by individuals doubled over the temperature range 12° to 25° C.

7. Oxygen consumption in air at 6° to 25° C was much less than in water.

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McLeese, D.W. Oxygen consumption of the lobster,Homarus americanus milne-edwards. Helgolander Wiss. Meeresunters 10, 7–18 (1964). https://doi.org/10.1007/BF01626094

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Keywords

  • Oxygen
  • Waste Water
  • Water Management
  • Water Pollution
  • Oxygen Consumption