Spontaneous activity of the lemming Dicrostonyx groenlandicus richardsoni Merriam as indicated in 24-hour records of oxygen consumption

The oxygen consumption and spontaneous activity of A2G ( hr/+), A2G ( hr/hr) and NMRI mice in groups of 2, 3, or 5 were measured, and body fat content was also determined. Average rates of oxygen consumption were found to be lowest in the A2G ( hr/+) and highest in the A2G ( hr/hr) mice, and conversely for the proportion of total body fat. There was no difference in activity of A2G ( hr/+) and A2G ( hr/hr), but the NMRI mice were more active.

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RESPIRATION OF FISHES WITH SPECIAL EMPHASIS ON STANDARD OXYGEN CONSUMPTION: I. INFLUENCE OF WEIGHT AND TEMPERATURE ON RESPIRATION OF GOLDFISH, CARASSIUS AURATUS L.

Canadian Journal of Zoology ◽

10.1139/z64-015 ◽

1964 ◽

Vol 42 (2) ◽

pp. 161-175 ◽

Cited By ~ 116

Author(s):

F. W. H. Beamish ◽

P. S. Mookherjii

Keyword(s):

Oxygen Consumption ◽

Spontaneous Activity ◽

Carassius Auratus ◽

Goldfish Carassius Auratus ◽

Simultaneous Measurements ◽

Proportionate Change ◽

Rate Of Oxygen Consumption ◽

Standard Rate ◽

The Mean ◽

External Stimuli

Standard oxygen consumption of goldfish was estimated in relation to weight and temperature from simultaneous measurements of routine oxygen uptake and spontaneous activity. The relation between weight and standard oxygen consumption was expressed as a logarithmic linear regression. For a given shift in temperature, the proportionate change in standard oxygen consumption appears to be independent of weight. The mean slope of the regressions was found to be 0.850.The standard rate of a 100-g goldfish increased linearly, on a semilogarithmic grid, over the temperature range of 10 to 35 °C. The estimates found in the present study were less than the lowest applicable values that could be found in the literature.The average routine rate of oxygen consumption suggests that goldfish display a considerable amount of spontaneous activity despite the elimination of external stimuli.

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Activity, Respiration, and Excretion of Ammonia by Atlantic Salmon (Salmo salar) Smolt and Postsmolt

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f89-098 ◽

1989 ◽

Vol 46 (5) ◽

pp. 790-795 ◽

Cited By ~ 22

Author(s):

A. J. Wiggs ◽

E. B. Henderson ◽

R. L. Saunders ◽

M. N. Kutty

Keyword(s):

Oxygen Consumption ◽

Atlantic Salmon ◽

Spontaneous Activity ◽

Salmo Salar ◽

Condition Factor ◽

Ammonia Excretion ◽

Initial Increase ◽

Atlantic Salmon Salmo Salar ◽

Substantial Change ◽

Increased Activity

Spontaneous activity, oxygen consumption, and excretion of ammonia by juvenile Atlantic salmon (Salmo salar) were measured over 17 wk as the appearance of the fish changed from early smolt to smolt and then postsmolt. A substantial change in routine oxygen consumption from 66 to 148 mL∙kg−1∙h−1 was primarily correlated with the increase in activity. An initial increase in ammonia excretion from about 5 to about 14 mL∙kg−1∙h−1 was largely correlated with the decline in condition factor from 0.99 to 0.79 suggesting that increased metabolic needs caused by the increased activity were not being met by the amount of food ingested. This is supported by the secondary increase in condition factor (C.F. = 0.93) and decrease in ammonia excretion (to about 7 mg∙kg−1∙h−1) that occurred after the meal size was increased.

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Effects of short-term fasting on spontaneous activity and excess post-exercise oxygen consumption in four juvenile fish species with different foraging strategies

Biology Open ◽

10.1242/bio.051755 ◽

2020 ◽

Vol 9 (9) ◽

pp. bio051755

Author(s):

Xiuming Li ◽

Yaoguang Zhang ◽

Shijian Fu

Keyword(s):

Oxygen Consumption ◽

Spontaneous Activity ◽

Fish Species ◽

Grass Carp ◽

Silver Carp ◽

Foraging Strategies ◽

Control Group ◽

Short Term ◽

Post Exercise ◽

Black Carp

ABSTRACTTo investigate the effects of short-term fasting on spontaneous activity and excess post-exercise oxygen consumption (EPOC) in sit-and-wait carnivorous southern catfish (Silurus meridionalis), active carnivorous black carp (Mylopharyngodon piceus), active herbivorous grass carp (Ctenopharyngodon idellus) and active filter-feeding silver carp (Hypophthalmichthys molitrix), each species was divided into a control group and a fasting group (deprived of food for 14 days). Both groups were maintained at 25°C and, at the end of the experimental period, the total movement distance (TMD), percent time spent moving (PTM), ventilation frequency (Vf), pre-exercise oxygen consumption (M(•)O2) and EPOC response of the experimental fish were measured. The TMD and PTM obtained for the control group of southern catfish were lower than those found for the control groups of the three active species. Short-term fasting resulted in decreases in the TMD and PTM of the southern catfish and black carp and increases in the TMD of grass carp and silver carp. The Vf of southern catfish was significantly higher than those of grass carp and silver carp, whereas the latter was also significantly higher than that of black carp. Short-term fasting resulted in significant increases in the Vf and decreases in the pre-exercise M(•)O2 of southern catfish and silver carp. Southern catfish and black carp exhibited lower peak post-exercise M(•)O2 and recovery rates, and relatively higher EPOC magnitudes than grass carp and silver carp. Short-term fasting exerted no significant effects on the peak post-exercise M(•)O2, but resulted in relatively higher EPOC magnitudes in the four fish species. These results suggest that (1) different fish species exhibit significantly different levels of spontaneous activity and post-exercise M(•)O2 profiles with different characteristics and that (2) short-term fasting exerts different effects on the level of spontaneous activity in four fish species with different foraging strategies.

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

Journal of the Fisheries Research Board of Canada ◽

10.1139/f69-008 ◽

1969 ◽

Vol 26 (1) ◽

pp. 93-109 ◽

Cited By ~ 49

Author(s):

R. H. Peterson ◽

J. M. Anderson

Keyword(s):

Oxygen Consumption ◽

Atlantic Salmon ◽

Spontaneous Activity ◽

Temperature Change ◽

Test Temperature ◽

Rapid Change ◽

Standard Metabolic Rate ◽

Transient Phase ◽

Similar Test ◽

Two Phases

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 separated 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 characterized by 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.

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Pectoral fin beat frequency predicts oxygen consumption during spontaneous activity in a labriform swimming fish (Embiotoca lateralis)

Environmental Biology of Fishes ◽

10.1007/s10641-008-9395-x ◽

2008 ◽

Vol 84 (1) ◽

pp. 121-127 ◽

Cited By ~ 17

Author(s):

Christian Tudorache ◽

Anders D. Jordan ◽

Jon C. Svendsen ◽

Paolo Domenici ◽

G. DeBoeck ◽

...

Keyword(s):

Oxygen Consumption ◽

Spontaneous Activity ◽

Beat Frequency ◽

Pectoral Fin ◽

Embiotoca Lateralis

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RESPIRATION OF FISHES WITH SPECIAL EMPHASIS ON STANDARD OXYGEN CONSUMPTION: II. INFLUENCE OF WEIGHT AND TEMPERATURE ON RESPIRATION OF SEVERAL SPECIES

Canadian Journal of Zoology ◽

10.1139/z64-016 ◽

1964 ◽

Vol 42 (2) ◽

pp. 177-188 ◽

Cited By ~ 217

Author(s):

F. W. H. Beamish

Keyword(s):

Oxygen Consumption ◽

Spontaneous Activity ◽

Brown Trout ◽

Brook Trout ◽

White Sucker ◽

Brown Bullhead ◽

Ictalurus Nebulosus ◽

Proportionate Change ◽

Standard Rate ◽

The Mean

Standard oxygen consumption, as estimated by simultaneously measuring spontaneous activity and oxygen consumption, for five species of freshwater fishes, was measured in relation to weight and temperature. The fish studied were brown trout, Sulmo trutta; brook trout, Salvelinus fontinalis; common white sucker, Catostomus commersonii; brown bullhead, Ictalurus nebulosus; and carp, Cyprinus carpio. When expressed on a logarithmic grid, standard oxygen uptake increased linearly with weight for all species. The proportionate change in standard oxygen consumption for a given change in temperature appears to be independent of size within each species. The mean slope values of the regressions found for brown trout, brook trout, common white sucker, brown bullhead, and carp are 0.877, 1.052, 0.864, 0.925, and 0.894, respectively.The standard rates of oxygen consumption found in the present investigation are less in most cases than the lowest applicable values that could be found in the literature.Spontaneous activity, expressed in terms of average oxygen consumption over the standard rate, varied with temperature. Maximum spontaneous activity for a given species coincided roughly with its preferendum temperature.

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