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The nature of the nutritional importance of serum albumin to Glossina morsitans
Authors:J.P. Kabayo
Affiliation:Tsetse Research Laboratory, University of Bristol, Department of Veterinary Medicine, Langford, Bristol, BS18 7DU, U.K.
Abstract:The nutritional significance of albumin protein and its constituent amino acids or associated impurities to Glossina morsitans was evaluated. Flies fed serum-free or albumin-free diets or diets containing delipidated serum or delipidated albumin failed to reproduce. The sizes of offspring produced by flies fed on diets containing different commercial albumins varied in proportion to the amount of bound lipid present in the albumin. FLies fed on albumin-containing diets supplemented with serum lipoproteins produced heavier offspring than flies fed on unsupplemented diets or on diets supplemented by other serum proteins. Delipidation of serum lipoproteins abolished this supplementary effect suggesting a possible similarity between lipoprotein-associated and albumin-bound lipid in terms of their importance to the nutrition and reproduction of tsetse. It is concluded that the observed nutritional importance of albumin to tsetse flies may derive from albumin-associated substances rather than albumin per se.
Keywords:Albumin  lipids  tsetse nutrition
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