Effect of temperature and salinity on the oxygen consumption of laboratory produced Penaeus californiensis postlarvae |
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| Institution: | 1. Department of Physiology, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic;2. Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic;3. Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic;4. nd;1. Hellenic Competition Commission, Commissionner, 5 P. Ioakim St., 12132, Peristeri, Greece;2. University of Piraeus, Department of Economics, 80, M. Karaoli & A. Dimitriou St., 18534 Piraeus, Greece;3. DePaul University, Department of Economics, United States;4. Oxford Brookes University, Department of Accounting, Finance and Economics, Wheatley Campus, Wheatley, Oxford OX33 1HX, United Kingdom |
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| Abstract: | - 1.1. The oxygen consumption by P. californiensis postlarvae (mean wt = 0.38 g) was determined at five different temperatures and four salinities.
- 2.2. The O2 in each chamber was recorded at 10 min intervals for 1 hr. The time course of oxygen depletion was independent of O2 concentration down to 1.6 mg/l.
- 3.3. Oxygen consumption increased with temperature from 0.0045 mg/g/min at 19°C, to 0.0142 mg/g/min at 35°C. The thermal coefficient (Q10) indicated a very high sensitivity of the postlarvae to temperature variations at 19–23°C.
- 4.4. The results show that oxygen consumption significantly depends on temperature (P < 0.001) while salinity has only a marginal effect.
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