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Carbohydrate Composition of Cotton Aphid Honeydew

Allen K. Murray and David A. Grantz


Honeydew from cotton aphids (Aphis gossypii) has been collected from aphids feeding on Pima S-6 plants between the ages of 4 and 7 weeks. The sugars identified in the honeydew are the same as those identified from honeydew of aphids feeding on older plants of upland cottons with the exception that we did not find trehalulose and melizitose. The sucrosyl oligosaccharides and many larger oligosaccharides were also found. The quantity and and distribution of the larger oligosaccharides varies with the age of the plants with the greatest concentration being present at five and six weeks of age. The larger oligosaccharides are not reducing sugars consistent with their proposed biosynthesis from sucrose and sucrosyl oligosaccharides.

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Document last modified 04/27/04