H. Hoste et al., LACK OF INTRASPECIFIC VARIATION IN THE 2ND INTERNAL TRANSCRIBED SPACER (ITS-2) OF TRICHOSTRONGYLUS-COLUBRIFORMIS RIBOSOMAL DNA, International journal for parasitology, 23(8), 1993, pp. 1069-1071
The nucleotide sequence of the second internal transcribed spacer (ITS
-2) was determined for three populations of the parasitic nematode Tri
chostrongylus colubriformis which differed in their susceptibility to
benzimidazole anthelmintics and/or in their geographical origin. No in
traspecific variation was found in the ITS-2 sequence, indicating that
this region of rDNA is inadequate to discriminate between resistant a
nd susceptible populations of T. colubriformis, but it may prove usefu
l for distinguishing between species of Trichostrongylus.