Influence of Temperature Change on Spontaneous Locomotor Activity and Oxygen Consumption of Atlantic Salmon, Salmo salar, Acclimated to Two Temperatures

Abstract

Carleton Un,ivers'ity, Ottawa, Ont. PnrensoN, R. H., eNo J. M. AxoonsoN. 1969. Influence oJ temperature change on spontaneous I'ocomotor actiuity ond. oxygen consulnption of Atlantic salmon, Sal,mo salar, acclimated to two tenxperatures. J. Fish. Res. Bd. Canada 26: 93-109.Measurements of the effect of rapid change in temperature on the spontaneous activity and oxygen consumption were made on Atlantic salmon underyearlings acclimated to 6 or 18 C. The new levels of imposed temperature ranged from 6 to 30 C for both acclimations. At similar test temperatures the calculated standard metabolic rate of the fish acclimated to 6 C was higher than that of the fish acclimated to 18 C, up to about 23 C, where the two curves relating oxygen consumption and temperature intersect. Spontaneous activity could be separaled into two phases, a transient phase occurring during the actual period of temperature change, and a stabilized phase. The transient phase was characterized by a peak in activity which was found to be correlated with the rate, rather than the amount, of the temperature change, In general, the peak was higher for fish acclimated to 18 C. The relation between activity in the stabilized phase and test temperature was characterizedby a plateau or maximum in the general region of the previously determined selected temperature. Except at the coldest test temperature (6 C), the fish acclimated to 6 C were more active in the stabilized phase than were the fish acclimated to 18 C at similar test temperatures. Complete acclimation for both metabolism and activity, between 6 and 18 C, requires about 2 weeks, regardless of the direction of the temperature change.

Rapid temperature compensation of volitional swimming speeds and lethal temperatures in tropical tunas (Scombridae)

“…Molecular compensation must be occurring with the observed temperature-independent metabolism (Gordon 1968, Chang et al, see footnote p. 83) and temperature-independent activity is observed for rates of temperature change of 4" C h-l, 5" C h-r, and 1" C day-t; for increasing and decreasing tem- I I I I ! I I I1 I I I 2x3 2, 22 23 24 23 29 27 First, yellowfin tuna, in contrast to the Euthynnus species and to the tissue metabolism of another 77zun-nus (Gordon 1968) have a Q 1e for locomotory activity similar to nonscombrid fishes (for example Salrno salar, see Peterson & Anderson 1969). This is puzzling because they, even more than the Euthynnus species, are believed to be fishes of the thermocline and owing to their larger size, could build up higher heat loads with exercise.…”

Behaviour and orcadian rhythm of the fish bathygobius soporator Valenciennes (Gobiidae) under the influence of environmental salinity and temperature

“…The water temperature is an environmental controlling factor (FRY 1971;LOVE 1970LOVE , 1980 determining the rate of metabolic processes (BULGER 1984;FANTA-FEOFlLOFF 1983;HOCHACHKA & SOMERO 1984;LUCCHIARI et al 1988;N1KOLSKl 1963) and the behaviour offish (FANTAFEOFlLOFF 1983;FANTA-FEOFlLOFF et al 1983;FANTA et af. 1989a,b;HEss 1952;OLLA & STUDHOLME 1975;OLLA et al 1978;PATERSON & ANDERSON 1969) at a significant extent. The light is another direct as well as secondary determinant factor & BARDACH 1965;FANTA et at.…”

“…In many fish, activity is depressed at higher temperatures (FRY 1947(FRY , 1971PATERSON & ANDERSON 1969). For Tautoga onitis it was advantageous to make all necessary adjustments to the environmental conditions and so, be able to remain within their normal homerange as their survival would depend upon finding suitable shelter and food resources (OLLA et al 1978).…”

Effect of temperature on locomotor activity in the goldfish (Carassius auratus) and the bluegill (Lepomis macrochirus): Presence of an ‘activity well’ in the region of the final preferendum

“…Ellgaard et al, 1975), with the 'activity well' dip appearing as only a minor anomaly (cf. Peterson & Anderson, 969;Power & Todd, 1976;Bartholomew, I977). While we might °C Fig.…”