Mathematische Analyse der kombinierten Wirkung von Temperatur und Salzgehalt auf den Stoffwechsel vonTilapia mossambica(Teleostei)
✍ Scribed by F. Krüger
- Publisher
- Springer-Verlag
- Year
- 1971
- Tongue
- English
- Weight
- 765 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0025-3162
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✦ Synopsis
Mathematical analysis o/ combined temperature and salinity effect on the metabolism o/ Tilapia mossambica (Teleostei) JOB (1969a, b) has presented experimental results on the influence of temperature and salinity on the rate of oxygen consumption in Tilapia mossambiea. He evaluated his results on the basis of the allometric function. The present paper analyses, in addition, the data obtained on the basis of the temperature function proposed by the present author. The parameters of this formula reveal that, in 50 and i00% sea water, the curves for the logarithmic values for the given body weights are parallel to each other; only the slope is different for the two salinities. In fresh water, the logarithmic temperature curves diverge, go~'s results clearly demonstrate that it is not possible to explain the differences in the respiratory metabolism of this fish on the grounds of the energy expenditure for osmoregulation. The present author supposes that the differences found in the rate of respiration are caused by differences in the ionic composition of the internal milieu in the different salinities.