Abstract:
The production of radioactive carbon dioxide by the young Dysdercus fasciatus Signoret adult males, after being injected with glutamic acid U14 indicated that glutamic acid was metabolized by the insect. The radioactivity count level in each amino acid was inversely propottional to the degree of its essentiality to Dysdercus. Thus the essential amino acids (argimine, histidine, isoleucine, leucine, lysine, phenylalanine, methionine, threonine, typtophan and valine) were found to contain very little, if any, radioactivity; while the non-essential aspartic acid, glycine and serine carried the largest radioactivity levels. These studies have confirmed the usefulness of the radioactive isotope procedure for the determination of nutritionally essential amino acids for insects which are difficult to maintain in the laboratory on synthetic food media.
Page(s):
227-232
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Science, Volume: 19, Issue: 5--6, Year: 1967