Studies on Larval Fascioloides magna. IV. Chromatographic Analyses of Free Amino Acids in the Hemolymph of a Host Snail

Publisher Website
Google Scholar
Abstract
The free amino acid content of hemolymph from the snail, Lymnaea stagnalis jugularis, reared in the laboratory, has been studied using paper and column chromatography. Ninhydrin reactive substances found include asparagine and glutamine, a-alanine, a-amino butyric acid, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, ornithine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, valine, and traces of cystine, and perhaps, methionine. Urea appeared as the major ninhydrin reactive constituent. The possible relationship certain of these amino acids may have to the results obtained in previous experiments on the in vitro survival of larval Fascioloides magna (a trematode parasite of L. stagnalis) is briefly discussed.