The effect of temperature and mass on routine metabolism in Sarotherodon (Tilapia)mossambicus (Peters)

Abstract

A reappraisal of oxygen uptake by Sarotherodon mossambicus was undertaken using a continuous flow respirometer. Measurements were obtained over the temperature range 16" C-37" C for fish weighing between 10 g and 150 g. Oxygen uptake was converted to energy equivalents (Q,,) using the value 13.68 J mg O,-l and the routine metabolic energy expenditure can be described by the equation E=0.0086 t2'0783 Mo'662 where E is the energy requirement for routine metabolism expressed in J h -l , t the temperature in "C and M the mass in g.

The effect of temperature on swimming performance and oxygen consumption in adult sockeye (Oncorhynchus nerka) and coho (O. kisutch)salmon stocks

“…O∑routine increased exponentially with temperature is consistent with previous studies showing exponential relationships for both M . O∑routine and standard metabolic rate (rainbow trout; Dickson and Kramer, 1971), brown trout Salmo trutta; Butler et al, 1992), sockeye salmon (Brett and Glass, 1973), tilapia Sarotherodon mossambicus; Caulton, 1978) and largemouth bass Micropterus salmoides; Cooke et al, 2001). As expected, our M .…”

Effects of water temperature on growth and sex ratio of juvenile Nile tilapia Oreochromis niloticus (Linnaeus) reared in geothermal waters in southern Tunisia

“…On the other hand, it is noticeable that fish fed at low temperatures have a lower daily food intake than those fed at higher temperatures. This may be explained by the fact that fish maintained at higher temperatures present a greater efficiency of assimilation, as demonstrated by Caulton (1978). According to this author, the mean energy content of the feces of Tilapia rendalli followed the expected trend, with a greater energy residue being voided by fish fed at lower temperature and, as a corollary, assimilation less efficient, suggesting that digestibility and assimilation efficiency are, thus, temperature dependent through enzymatic kinetics.…”

The biomass and yield of the dominant fish species in Hartbeespoort Dam, South Africa

“…Such fluctuations would restrict intensive management and utilisation of the population and would inhibit the development of a commercial fishery dependent on this species . The seasonality of catches of 0. mossambicus was due to its temperature sensitivity (Caulton, 1978) and the low catches in winter were due to a decrease in or cessation of feeding activity.…”