Amino acid requirements of the cotton stainer, dysdercus fasciatus (pyrrhocoridae, hemiptera)
1968
ALIKHAN, M.A.
L - glutamic acid - ¹⁴C (U.L.) injection provided a convenient means for the study in vivo of the amino acid requirements of Dysdercus fasciatus. The production of ¹⁴CO² by the injected insects indicated that glutamic acid was metabolized by the Dysdercus system. Out of the 16 amino acids extracted from the treated insects, arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophane and valine carried a negligible amount of radioactivity, while alanine, aspartic acid, glycine, proline, serine and tyrosine had a very high level of radioactivity. On the basis of these studies, it would appear that the amino acids which had low radioactivity levels are essential, while those carrying high amounts of radioactivity are not essential for the normal growth of Dysdercus.
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