scholarly journals Effect of Seasonal Temperature on Oxygen Consumption in Relation to Body Size of a Fresh-Water Fish, the Flying Barb, Esomus dandricus (Ham.)

Our Nature ◽  
1970 ◽  
Vol 4 (1) ◽  
pp. 53-60
Author(s):  
H. Bhattacharya ◽  
B. R. Subba
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Oxygen Uptake Rate ◽  
Gradual Increase ◽  
Regression Line ◽  
Winter Season ◽  
Unit Weight ◽  
Fresh Water Fish ◽  
Seasonal Temperature

Oxygen uptake in relation to body weight was measured in Esomus dandricus at two different seasonal temperatures, winter and summer. Oxygen uptake per unit time (mlO2/hr) increased from 0.5335 to 0.7839 with gradual increase in body weight from 0.5 to 1.5 g during winter season. During summer, it increased from 0.5539 to 1.4853 with an increase in body weight from 0.6 to 3.3 g. Oxygen uptake per unit time (mlO2/hr) increased by a power of 0.2594 while the oxygen uptake per unit weight (mlO2/g/hr) decreased by a power of -0.7409 at 16 ± 1 °C. Oxygen uptake rate per unit time (mlO2/hr) increased by a power of 0.5722 while the oxygen uptake per unit weight (mlO2/g/hr) decreased by a power of -0.4282 at 25 ± 1°C. As the slope of regression line relating to oxygen uptake (mlO2/hr) and body weight in Esomus dandricus is less than 1.0, it can be suggested that the oxygen uptake will decrease with increase in body weight of the fish.Keywords: Flying Barb, Oxygen consumption, Winter, Summerdoi:10.3126/on.v4i1.503Our Nature Vol. 4(1) 2006 pp53-60

The relationship between cirral activity and oxygen uptake in Balanus balanoides

1965 ◽  
Vol 45 (2) ◽  
pp. 387-403 ◽  
Author(s):  
R. C. Newell ◽  
H. R. Northcroft
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Mantle Cavity ◽  
The Body ◽  
Effect Of Temperature ◽  
Zero Rate ◽  
Rate Of Oxygen Consumption ◽  
The Relationship ◽  
Balanus Balanoides

The rate of cirral beat of Balanus balanoides is related to the logarithm of the body weight as an exponential function. In any one animal, there is little effect of temperature on cirral activity between 7·5° and 10° C. Between 10° and 20° C, however, there is a rapid increase in cirral beat with temperature followed by a fall at temperatures above 20° C.Balanus balanoides exhibits a fast, medium and zero rate of oxygen consumption. These rates of oxygen consumption correspond with (a) normal cirral beating, (b) ‘testing’ activity with no cirral movement, and (c) with the closure of the mantle cavity. Both of the possible levels of oxygen uptake are related to the logarithm of the body weight in a logarithmic fashion over the temperature range 7·5°–22·5° C. Temperature affects the two rates of oxygen consumption differently. In the slower rate (rate B) there is an increase in the rate of oxygen consumption between 7·5° and 14° C but there is no significant increase in the rate of oxygen consumption between 14° and 22·5 C°.

Morphometric and flow indicator studies of the teleost heart

1975 ◽  
Vol 53 (6) ◽  
pp. 691-698 ◽  
Author(s):  
James N. Cameron
Keyword(s):  
Body Weight ◽  
Coronary Artery ◽  
Oxygen Uptake ◽  
Blood Supply ◽  
Venous Blood ◽  
Cortical Layer ◽  
The Body ◽  
Unit Weight ◽  
Arterial Blood ◽  
Thymallus Arcticus

The structure of the heart of four species of Alaskan fishes (Thymallus arcticus, Esox lucius, Lota lota, and Catostomus catostomus) was examined in varying detail. The ventricle constitutes 0.07 to 0.09% of the body weight, 26 to 35% of which consists of an outer, cortical layer, and the balance a spongy, trabeculated inner layer. Blood supply to the cortex comes exclusively from the coronary artery, whereas the inner layer is supplied by venous (deoxygenated) blood from the ventricular lumen. Flow indicator studies implied that the cortical layer receives about half as much blood per unit weight as the inner layer, but probably receives about the same amount of oxygen, since arterial blood contains roughly twice as much oxygen as does venous blood. Calculations of the probable limits for oxygen uptake of the ventricle are made on the basis of data in this study and in the literature.

ÉTUDE DE L'ACCLIMATION THERMIQUE CHEZ LA LIMACE ARION CIRCUMSCRIPTUS

1963 ◽  
Vol 41 (4) ◽  
pp. 671-698 ◽  
Author(s):  
Adolphe Roy
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Metabolic Rate ◽  
Heat Production ◽  
Regression Line ◽  
Experimental Temperature ◽  
Acclimation Temperature ◽  
Direct Calorimetry

Slugs of the species Arion circumscriptus were acclimated to temperatures of 5°, 8° 10°, 20°, and 25 °C respectively. After acclimation, metabolic rate was determined, either as oxygen consumption, at 30° and 20°, or by direct calorimetry, at 25° and 12.5°, At all given exposure temperatures, the average metabolic rate was lower, by 1% to 1.5%, for each degree of increase in the acclimation temperature. When the logarithms of total O2 consumption or heat production per hour are plotted against the logarithms of body weight, the regression line obtained for slugs acclimated to heat stands below that obtained for slugs acclimated to cold; the slope is also slighter for the warm-acclimated slugs than for the cold-acclimated, so that the distance between corresponding points of two such curves is larger in the righthand side of the graph, where the large specimens are represented, than in the lefthand side where the small specimens are shown. This would imply that an increase in the acclimation temperature reduces metabolic rate to a proportionately greater extent in the larger specimens than it does in the smaller ones. The value of the slope, which is inversely correlated with acclimation temperature, is also inversely correlated with the experimental temperature at which metabolism is determined.

Influence of Endogenous OUR Determination on the KLa$${K_L}a$$, Exogenous OUR, Total Oxygen Consumption and Heterotrophic Yield in a Completely Mixed Batch Reactor

2014 ◽  
Vol 12 (2) ◽  
pp. 695-704 ◽  
Author(s):  
R. Zamouche-Zerdazi ◽  
M. Bencheikh Lehocine ◽  
A.-H. Meniai
Keyword(s):  
Wastewater Treatment ◽  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Batch Reactor ◽  
Total Oxygen ◽  
Biomass Activity ◽  
Biological Reaction ◽  
Global Nature

Abstract In wastewater treatment, waste removal and biomass activity are important processes which need to be monitored for a good process control. The difficulties in the interpretation of the total COD, BOD and VSS measurements encouraged the development of respirometric methods for assessing the kinetic constants. Respirometry is an important technique in assessing biological reaction in wastewater treatment. $${K_L}a$$, depends on endogenous oxygen uptake rate (OURend), is a key constant in evaluating respirogram-specific parameters. Generally, OURend is assumed constant in the dissolved oxygen equations. However, it is not the case. Consequently, this paper deals with the influence of OURend calculations region on $${K_L}a$$ determination, exogenous oxygen uptake rate (OURexo), total oxygen consumption and heterotrophic yield (YH). It was shown that the value of OURend and $${K_L}a$$ varied considerably, a maximum of 56%, depending on where to consider Cfin, on the oxygen concentration variation curve. Even though, the variation on OURend and $${K_L}a$$ is important its influence on Yo/x and YH is attenuated to 7.5% and 6%, respectively. This may be due to the local nature of the first parameters (OURend and $${K_L}a$$) and the global nature of the later ones. Moreover, this can be seen through the variation of the calculated amount of oxygen consumed (QThete) which is of the order 7.6%.

An off-line respirometric procedure to determine inhibition and toxicity of biodegradable compounds in biomass from an industrial WWTP

2004 ◽  
Vol 48 (11-12) ◽  
pp. 267-275 ◽  
Author(s):  
A. Guisasola ◽  
J.A. Baeza ◽  
J. Carrera ◽  
C. Casas ◽  
J. Lafuente
Keyword(s):  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Toxicity Assessment ◽  
Before And After ◽  
And Control

Determining whether a certain compound is toxic (or inhibitor) or not to a biomass of a WWTP is crucial in order to avoid WWTP malfunction. Respirometric techniques have been commonly used to assess the toxicity of a certain compound by evaluating the oxygen uptake rate (OUR) profile obtained when a pulse of substrate is added to endogenous biomass and comparing it with the OUR profile obtained when the pulse is a mixture of substrate and the possible toxic or inhibitor (PTI). However, when using this method with biodegradable compounds some difficulties arise because the PTI consumption implies oxygen consumption as well. In this study, a modified procedure for toxicity assessment using respirometry is developed which overcomes the difficulties caused by the toxic biodegradability. This procedure is based on the comparison of different respirograms obtained with pulses of control substrate before and after adding the PTI and with a pulse of PTI and control substrate together. Moreover, some examples are shown with p-phenylenediamine and phenol as an example of toxic and inhibitor for nitrifying biomass.

RELATION OF OXYGEN UPTAKE TO BODY WEIGHT OF RATS AT DIFFERENT ENVIRONMENTAL TEMPERATURES

1965 ◽  
Vol 43 (3) ◽  
pp. 351-357 ◽  
Author(s):  
N. T. Gridgeman ◽  
O. Heroux
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Statistical Analysis ◽  
Oxygen Uptake ◽  
Linear Relation ◽  
Environmental Temperature ◽  
Analysis Of Covariance ◽  
Sprague Dawley ◽  
Experimental Conditions ◽  
Environmental Temperatures

Statistical analysis of data on the oxygen consumption of rats (Sprague–Dawley strain; records covering several years of experimentation in one laboratory) indicated that the relation between oxygen uptake and body weight is not constant. Kleiber's case for a linear relation between oxygen uptake and the [Formula: see text] power of body weight for homeotherms in general under normal environmental conditions is not impugned by the present findings. Under abnormal experimental conditions, particularly as regards environmental temperature, the use of the analysis of covariance is recommended to best allow for the effect of body weight on oxygen uptake.

Respiration and biometry in the sea cucumber Holothuria forskali

1991 ◽  
Vol 71 (1) ◽  
pp. 73-81 ◽  
Author(s):  
C. M. Astall ◽  
M. B. Jones
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Sea Cucumber ◽  
Regression Line ◽  
Weight Ratio ◽  
Mechanical Trauma ◽  
Low Oxygen ◽  
Sea Cucumbers ◽  
Oxygen Tensions ◽  
Respiratory Trees

Relationships between wet body weight, dry body weight and ash-free dry body weight (AFDW) were established for the aspidochirote sea cucumber Holothuria forskali (Echinodermata: Holothuroidea); a wetdry weight ratio of 6–38:1 was found. Length-weight relations were also determined. Low oxygen tensions and mechanical trauma induced H. forskali to eviscerate (70% of individuals tested). Respiratory measurements of intact and eviscerated sea cucumbers were determined at 17°C. For intact animals, oxygen consumption (ul h1) was directly related to AFDW (the slope of the regression line, b=0–60), whereas weight-specific oxygen consumption (Vo2; ul g1AFDW h) was inversely related to AFDW (b=0–54). Oxygen consumption of eviscerated sea cucumbers was independent of AFDW (b=0-\5), but Vo 2 was inversely related to AFDW (t–0–85). There were no significant differences between the respiratory rates of intact and eviscerated individuals, indicating that H. forskali is not so dependent upon respiratory trees for oxygen uptake as previously assumed.

scholarly journals Effect of body size, temperature and starvation on oxygen consumption of antarctic krill Euphausia superba

1997 ◽  
Vol 45 (1-2) ◽  
pp. 01-10 ◽  
Author(s):  
Phan Van Ngan ◽  
Vicente Gomes ◽  
Paulo S. M. Carvalho ◽  
Maria José de A. C. R. Passos
Keyword(s):  
Oxygen Consumption ◽  
Body Size ◽  
Metabolic Rate ◽  
Regression Line ◽  
Dry Weight ◽  
Unit Weight ◽  
Adaptation Period ◽  
General Measure ◽  
Significant Difference ◽  
Wet Weight

Routine oxygen consumption of krill was investigated as a general measure of its metabolism and assesses the effects of body size, temperature and starvation on the metabolism. No significant difference in whole animal consllmption was detected after 1,3,5 and 7 days of starvation. The response of metabolism of krill to temperature shows a zone of independence, from 0 to 1°C in which the temperature exerts no effect on metabolism. From 1 to 4°C the metabolism increases rapidly in function of temperature. There was a general increase in oxygen consumption with increasing body wet weight. The equation 'between consumption and wet weight is given by Log Q02 = 2.061+ 0.987xLogW, with r = 0.86. The slope of the regression line b=0.987 is less than unity, indicating that oxygen consllmption per unit weight is greater for the smaller than for the larger krill. Average metabolic rate at O°C of 164 krill is 733.24 l, µlO2g(dry wt)-1h-1. The metabolic rate is of 1129.67 J- µlO2g(dry wt)-1h-1 for small krill (13-19 mg dry weight) and 636.16 J- µlO2g(dry wt)-1h-1 for larger animais (160-169 mg dry weight). The metabülism ofkrill is shown to be related to period of adaptation and types of respirometer. Prolonged adaptation period showed adverse effect on metabolism and average oxygen consumption is almost three times higher in respirometers with stirring device than in simple sealed chambers.

THE INFLUENCE OF STEROID HORMONES ON THE ENERGY METABOLISM OF THE ADRENAL CORTEX IN VITRO

1954 ◽  
Vol 10 (2) ◽  
pp. 111-116 ◽  
Author(s):  
EVA BRUMMEL ◽  
I. D. K. HALKERSTON ◽  
M. REISS
Keyword(s):  
Oxygen Consumption ◽  
Energy Metabolism ◽  
Oxygen Uptake ◽  
Steroid Hormones ◽  
Adrenal Cortex ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Direct Action ◽  
Cortex Slices

SUMMARY The action of different steroid hormones on the oxygen consumption of adrenal cortex slices in vitro was investigated. Deoxycorticosterone (DOC), testosterone and dehydroisoandrosterone, and 17-hydroxycorticosterone, were found to stimulate the oxygen uptake rate, while cortisone, progesterone, pregnenolone, androsterone and cholesterol were inactive. Pretreatment of the slices with DOC, testosterone or ACTH inhibited the action of ACTH or DOC added subsequently. The significance of the direct action of different steroid hormones on the energy metabolism of the adrenal cortex is discussed.

scholarly journals Aquatic Oxygen Uptake of the Freshwater Dual Breathing Featherback, Notopterus notopterus (Pallas) in Relation to Body Weight

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 131-138
Author(s):  
R. Kumari ◽  
P.K. Roy ◽  
T.K. Ghosh
Keyword(s):  
Body Weight ◽  
Oxygen Uptake ◽  
Negative Correlation ◽  
Flow System ◽  
Gradual Increase ◽  
Significant Negative Correlation ◽  
B Value ◽  
Straight Line ◽  
The Relationship ◽  
Notopterus Notopterus

Oxygen uptake (VO2) through the gills in relation to body weight has been studied in Notopterus notopterus at 24.0±1.0ºC under continuous water flow system. With gradual increase in body weight from 5.10 to 122.33 g, the oxygen uptake increased from 1.164-3.975 mlO2.h–1. The log-log plot between the oxygen uptake per unit time and body weight gave a straight line with the slope ‘b’ value of 0.421. The relationship between the two variables was found to be highly significant (r= 0.986; p<0.001). However, the weight specific oxygen uptake decreased from 228.36 to 32.49 with increase in body weight from 5.10 to 122.33 g. A straight line with slope ‘b’ value of   -0.629 was obtained when plotted on log-log coordinates, showing a highly significant negative correlation (r= 0.985; p<0.001).DOI: 10.3126/on.v8i1.4320

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