Respiratory adaptations ofPleuroncodes planipesto its environment off Baja California
✍ Scribed by L. B. Quetin; J. J. Childress
- Book ID
- 104752517
- Publisher
- Springer-Verlag
- Year
- 1976
- Tongue
- English
- Weight
- 633 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0025-3162
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✦ Synopsis
Rates of oxygen consumption (Q02) were measured for Pleuroncodes planipes Stimpson as a function of temperature, size, hydrostatic pressure, and oxygen partial pressure. These rates were independent of hydrostatic pressure and dependent on temperature over environmental ranges normally encountered by P. planipes. The effect of size on QO 2 was intermediate between surface area and unity. QIO values between adjacent temperatures from 10 ~ to 25oc ranged from 1.9 to 2.5. At all temperatures the crustaceans regulated their QO2 down to very low partial pressures of oxygen. The critical partial pressure (Pc) increased with increasing temperature but the low Pc at I0~ suggests that p. planipes lives aerobicallyin the oxygen minimum layer. When plotted against a typical hydrographic regime from its environment, the QO 2 of p. planipes was found to decrease with increasing depth.