Abstract
IN recent letters Mr. R. W. Jack1 and Dr. C. H. N. Jackson2 state that, when considering the effects of climate on tsetse metabolism, it is valuable to express the percentage of water present in the insects at different times as a function of the ” fat-free” dry weight. This is because the amounts of this food-reserve vary greatly; it occurs concentrated in the fat-body and not in large amounts in the individual cells of the vital tissues. Jack and Jackson imply that their methods show the conditions in the tissues of the tsetse more accurately than do gross percentages of water and dry matter present in the bodies of the insects.
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References
Jack, R. W., NATURE, 139, 31 (1937).
Jackson, C. H. N., NATURE 139, 674–5 (1937).
Mellanby, K., Bull. Ent. Res., 27, 611–32 (1936).
Wigglesworth, V. B., Proc. Roy. Soc., B, 109, 354–59 (1931).
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MELLANBY, K. Water and Fat Content of Tsetse Flies. Nature 139, 883 (1937). https://doi.org/10.1038/139883a0
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DOI: https://doi.org/10.1038/139883a0
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