ISSN:
1573-5117
Keywords:
metabolism
;
oxygen uptake
;
respiration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The O2 uptake through water has been measured in case of Heteropneustes fossilis during development and growth and its relationship to body size established. A higher rate of O2 uptake during the early phase of ontogenesis is related to intense growth of the respiratory surface area and increasing metabolic demand of the fish. The logarithmic plot of data for O2 uptake in relation to body size shows a statistically significant two-component curve; one related to the fish when it is a fully aquatic breather and the other when it changes to bimodal gas exchange. The onset of the air breathing habit brings about a 40% drop in O2 uptake through water, which is made good through the newly developed air breathing organ.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00011944
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