| preliminary investigation of a possible lung worm (parafilaroides decorus), fish (girella nigricans), and marine mammal (callorhinus ursinus) cycle for san miguel sea lion virus type 5. | colostrum-deprived neonatal northern fur seal pups (callorhinus ursinus) were exposed to san miguel sea lion virus type 5 (smsv-5) by feeding them fish (girella nigricans) infected with virus or fish infected with both the sea lion lung worm larvae (parafilaroides decorus) and virus. virus infection was demonstrated in 8 of 9 pups, and 1 of these developed a vesicular lesion on the flipper. in this sequence, p decorus larvae exposed to smsv-5 were fed to g nigricans held at 15 c in a salt water ... | 1980 | 6259973 |
| phylogenetic analysis of the metastrongyloidea (nematoda: strongylida) inferred from ribosomal rna gene sequences. | phylogenetic relationships among nematodes of the strongylid superfamily metastrongyloidea were analyzed using partial sequences from the large-subunit ribosomal rna (lsu rrna) and small-subunit ribosomal rna (ssu rrna) genes. regions of nuclear ribosomal dna (rdna) were amplified by polymerase chain reaction, directly sequenced, aligned, and phylogenies inferred using maximum parsimony. phylogenetic hypotheses inferred from the ssu rrna gene supported the monophyly of representative taxa from e ... | 2003 | 14627145 |