| enteric helminths of perch (perca fluviatilis l.) and yellow perch (perca flavescens mitchill): stochastic or predictable assemblages? | component communities of perch (perca fluviatilis l) in eurasia and the north american yellow perch (perca flavescens mitchill) were examined to determine the nature of their parasite communities. the scale of this investigation is continental and includes data collected across the distribution of each host species. data were compiled from the literature and from 5 sample sites in north america. four parasite species were found to occur frequently in the helminth component communities of p. flav ... | 1999 | 10577711 |
| systematic position and relationships of paracreptotrematina limi, based on partial sequences of 28s rrna and cytochrome c oxidase subunit 1 genes. | paracreptotrematina limi amin and myer, 1982 (trematoda), an intestinal fluke specific to the mudminnow, umbra limi, is conventionally classified within the papillose allocreadiidae. its unusual morphology (lack of identifiable vitellaria, large fully embryonated terminal eggs), assumptions of homology of its 2 atypical muscular oral 'papillae' (lobes) with those of the bunoderinae, and its unknown life cycle make this classification tenuous. previous phylogenetic analyses of the papillose alloc ... | 2006 | 16729708 |
| the phylogenetic position of allocreadiidae (trematoda: digenea) from partial sequences of the 18s and 28s ribosomal rna genes. | species of allocreadiidae are an important component of the parasite fauna of freshwater vertebrates, particularly fishes, and yet their systematic relationships with other trematodes have not been clarified. partial sequences of the 18s and 28s ribosomal rna genes from 3 representative species of allocreadiidae, i.e., crepidostomum cooperi, bunodera mediovitellata, and polylekithum ictaluri, and from 79 other taxa representing 78 families of trematodes obtained from genbank, were used in a phyl ... | 2007 | 17436963 |
| parasites of juvenile brook trout (salvelinus fontinalis) from hunt creek, michigan. | four parasite species (crepidostomum cooperi, cystidicoloides ephemeridarum, acanthocephalus dirus, salmincola edwardsii) infected 215 juvenile brook trout (105 young-of-year; 110, 1-yr-old) from hunt creek, michigan, in 2003, 2004, and 2005. prevalences of these species in 2004 (main study year) varied from 29 to 37%. crepidostomnum cooperi had the highest mean intensity and mean abundance, followed by c. ephemeridarum. the number of fish infected with each parasite species was significantly hi ... | 2007 | 17539413 |