| the impact of a dam on the helminth fauna and health of a neotropical fish species salminus brasiliensis (cuvier 1816) from the upper paraná river, brazil. | the aim of the present study was to detect changes in the structure of the helminth parasite infracommunities in salminus brasiliensis (cuvier 1816) from the floodplain of the upper paraná river after construction of the porto primavera hydroelectric plant. a total of 126 fish in the period before the dam's construction and 56 specimens 10 years after this event were analysed. three species of parasites were collected before the construction of the dam: prosthenhystera obesa diesing, 1850 (digen ... | 2013 | 22776324 |
| prosthenystera oonastica n. sp. (digenea: callodistomidae) from ictalurid catfishes in southeastern united states and molecular evidence differentiating species in the genus across americas. | prosthenhystera oonastica n. sp. is described as a cryptic species from the gall bladder of three ictalurid catfishes, ictalurus punctatus (rafinesque), ictalurus furcatus (valenciennes), and pylodictis olivaris (rafinesque), in rivers in the southeastern united states. the species was originally named by wilmer a. rogers in 1979 but never formally described. material used for the description consists of two specimens of roger's original material and ten new specimens. we found no significant mo ... | 2015 | 25557746 |
| helminth fauna parasitizing pimelodus pohli (actinopterygii: pimelodidae) from the upper são francisco river, brazil. | the parasite fauna of catfish, pimelodus pohli, from the são francisco river basin is presented. a total of 45 catfish from the upper são francisco river (45°15'44″w 18°13'25″s), were examined from july 2009 to september 2011. forty-three catfish (95.5%) were infected by at least one parasite species, with 885 parasite specimens being found, distributed across 17 species: monogenea (demidospermus uncusvalidus, pavanelliella pavanellii, and scleroductus sp.); eucestoda (plerocercoids of proteocep ... | 2016 | 25271459 |