V. Barus et al., QUALITATIVE AND QUANTITATIVE SPECTRUM OF AMINO-ACIDS IN MALES AND FEMALES OF 3 NEMATODE SPECIES, Helminthologia, 35(2), 1998, pp. 57-63
The qualitative and quantitative spectrum of 17 amino acids (AA) was d
etermined in 3 nematode species: Anguillicola crassus (host Anguilla a
nguilla), Protospirura muricola (host Cryptomys hottentotus) and Toxoc
ara canis (host Canis familiaris). In comparing the spectrum hierarchi
c order of amino acids in individual nematode species (both sexes pool
ed), statistically significant differences were found in 10 AAs, of es
sential amino acids (EAA) in tyrosine, valine, phenylalanine, arginine
, lysine and cystine, of non-essential amino acids (NEAA) in glutamic
acid, alanine, glycine and serine. Statistically insignificant differe
nces are in leucine, isoleucine and proline (between P. muricola and T
. canis), a different position is in threonine and histidine. The comp
arison of amino acid quantitative values in males and females of 3 nem
atode species indicated the statistically significant differences, nam
ely in both EAAs and NEAAs. In the species. A. crassus, there were 4 A
As (tyrosine, phenylalanine, histidine and alanine) with higher values
in favour of males and 2 AAs (aspartic acid and proline) in favour of
females; in P. muricola, the respective ratio was 2 (valine and leuci
ne) : 7 (threonine, lysine, arginine, cystine, serine, glutamic acid a
nd alanine); in T. canis it was one (proline) : 4 (isoleucine, glutami
c acid, glycine and alanine). No amino acid was found which could demo
nstrate a statistically significant value characteristic only of males
or only of females in the nematodes under study.