| infectivity and growth of echinostoma revolutum (froelich, 1802) in the domestic chick. | infectivity and growth studies in domestic chicks were carried out on a strain of echinostoma revolutum isolated from lymnaea elodes snails in indiana, u.s.a. of 21 chicks, each fed 40 +/- 10 cysts of echinostoma revolutum, 16 (64%) were infected with a total of 269 (32%) worms from approximately 840 cysts. worms were found only in the ceca and rectum at 2-14 days p.i. in vivo excysted metacercariae were obtained in the lower ileum and ceca at 4 h p.i. excysted metacercariae averaged 0.2 mm in l ... | 1997 | 9076539 |
| intraspecific variation in the rdna its loci of 37-collar-spined echinostomes from north america: implications for sequence-based diagnoses and phylogenetics. | the recent finding of the 37-collar-spined echinostoma revolutum in north america prompted rdna nucleotide sequence comparisons between this worm and the sympatric echinostoma trivolvis. three isolates of e. revolutum from distinct sites and 2 isolates of e. trivolvis collected from a single site were used in this analysis. sequence data were compared to those from previously sequenced members of the 37-collar-spine group. the 3 north american isolates of e. revolutum were found to be identical, ... | 1998 | 9794643 |
| the occurrence and identification of echinostoma revolutum from north american lymnaea elodes snails. | lymnaea elodes snails collected in northern indiana, u.s.a., were infected with larval stages of an echinostome bearing 37 collar spines and resembling members of the echinostoma group. the taxonomic status of this digenean was determined through experimental infections of various definitive and first-intermediate hosts. in addition, characteristics of the penetration and paraesophageal glands in cercariae from this echinostomatid were compared with those from e. revolutum and e. trivolvis. resu ... | 1997 | 9057720 |