Free amino acids and sugars of the adult sugar cane froghopper (aeneolamia varia saccharina) (homoptera: cercopidae) in relation to those of its host
1969
HAGLEY, ELMER A.C.
Glucose, fructose, sucrose, raffinose and glucuronic acid were present in both adult froghopper excrement and in sugar cane leaf sap. Melibiose was also present in the excrement but did not occur in the plant sap. Sugars were not recovered in the salivary glands of the insect, but in the haemolymph, glucose, fructose, sucrose and trehalose were determined. Most of the amino acids (alanine, arginine, asparagine, aspartic acid, cysteine/cysteic acid, cystine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, phenylalanine, proline, serine, tryptophan, tyrosine and valine) in the leaf sap were present in the froghopper haemolymph and salivary glands. Nine of these acids also occurred in the excrement of the insect.
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