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

Authors

  • R. Kumari Ichthyology Research Laboratory, Post-Graduate Department of Zoology, T.M. Bhagalpur University, Bhagalpur- 812007
  • P.K. Roy Ichthyology Research Laboratory, Post-Graduate Department of Zoology, T.M. Bhagalpur University, Bhagalpur- 812007
  • T.K. Ghosh Ichthyology Research Laboratory, Post-Graduate Department of Zoology, T.M. Bhagalpur University, Bhagalpur- 812007

Keywords:

Aquatic oxygen uptake, Body weight, Notopterus notopterus, air-breathing fish

Abstract

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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Aquatic Oxygen Uptake of the Freshwater Dual Breathing Featherback, Notopterus notopterus (Pallas) in Relation to Body Weight. (2011). Our Nature, 8(1), 131-138. https://doi.org/10.3126/on.v8i1.4320

Issue

Vol. 8 No. 1 (2010)

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Articles

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How to Cite

Aquatic Oxygen Uptake of the Freshwater Dual Breathing Featherback, Notopterus notopterus (Pallas) in Relation to Body Weight. (2011). Our Nature, 8(1), 131-138. https://doi.org/10.3126/on.v8i1.4320