| determinations of hexabromocyclododecane (hbcd) isomers in channel catfish, crayfish, hen eggs and fish feeds from china by isotopic dilution lc-ms/ms. | hbcd is widely used brominated flame retardant, which is increasingly reported in the environment. a new isotopic dilution lc-ms/ms method was developed to determine three hbcd isomers, α-, β- and γ-hbcd in channel catfish, crayfish, hen eggs and fish feeds in this study, and especially for the first time hbcd isomers composition in crayfish, hen eggs and fish feeds. soxhlet extractor and gpc cleanup were used, some important steps and crucial parameters were modified and intensified compared wi ... | 2010 | 21122892 |
| first report of mucor circinelloides occurring on yellow catfish (pelteobagrus fulvidraco) from china. | infected yellow catfish (pelteobagrus fulvidraco) were sent from niushan lake fishery, hubei province, china, to our laboratory for diagnosis. macroscopic daffodil yellow mold was observed on the heads and fins of the fish and one mucor species was isolated. based on the morphological and molecular analysis, the species was identified as mucor circinelloides. its optimum growth temperature was 30 degrees c and it could not grow at 40 degrees c. the infectivity results showed wound infection coul ... | 2010 | 19930461 |
| morphological and genetic differences of trypanosoma in some chinese freshwater fishes: difficulties of species identification. | blood smears and purified trypanosome from freshwater fishes yellow catfish (pseudobagras fulvidraco) and common carp (cyprinus carpio) captured from niushan lake, hubei province were examined to determine whether all of their trypanosomes were trypanosoma pseudobagri, a species of supposed host specificity and widespread existence across china. trypanosomes occurred in 16/16 blood smears, and morphometric character analysis of trypanosomes from these smears showed that there were three morphosp ... | 2007 | 17558522 |
| new data on the morphology and systematic status of spinitectus petrowi and spinitectus gigi (nematoda: cystidicolidae) parasitic in catfishes in central china. | two little-known nematode species of the genus spinitectus fourment, 1883, s. petrowi belous, 1965 (prevalence 25%, intensity 1-8) and s. gigi fujita, 1927 (prevalence 10%, intensity 2-3), were collected from the gastrointestinal tract of the yellow catfish, pelteobagrus fulvidraco (richardson), from liangzihu lake, hubei province, central china, in september of 2002. the light and scanning electron microscopical examination of this material, supplemented by a few museum specimens of s. gigi col ... | 2004 | 15729948 |
| new data of two trichodinid ectoparasites (ciliophora: trichodinidae) from farmed freshwater fishes in hubei, china. | trichodinids are ciliated protozoan parasites or symbionts of marine and freshwater organisms. during a parasitic ciliate survey in hubei, china, two trichodina species, t. acutalom, 1961 and t. hyperparasitis chen & hsish, 1984, were isolated from body surface of loach misgurnus anguillicaudatus and gills of yellow catfish pelteobagrus fulvidraco, respectively. the two species were investigated morphologically, based on silver-strained specimens, and their small subunit ribosomal rna gene (ssu ... | 2017 | 28662492 |