Abstract
IT has been known for some time that some insects (larvæ, pupæ and adults) may discharge the carbon dioxide produced during metabolism either as a continuous stream or in bursts1–5. Punt, using a diaferometer, was able to demonstrate changes in the concentration of carbon dioxide, but he points out that the sensitivity of his instrument was always adapted to the amount of carbon dioxide produced, and was calibrated for this amount. Thus his graphs from different animals cannot be compared with one another, whereas those made using an infra-red analyser can be compared.
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References
Punt, A., Physiol. comp. ('s-Grav.)., 2, 59 (1950).
Punt, A., Physiol. comp. ('s-Grav.)., 4, 121 (1956).
Schneiderman, H. A., Anat. Rec., 117, 540 (1953).
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Hamilton, A. G., Proc. 10th Int. Congr. Ent., 2, 343 (1956(1958)).
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HAMILTON, A. The Infra-red Gas Analyser as a Means of Measuring the Carbon Dioxide Output of Individual Insects. Nature 184, 367–369 (1959). https://doi.org/10.1038/184367a0
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DOI: https://doi.org/10.1038/184367a0
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