| a novel spiroplasma pathogen causing systemic infection in the crayfish procambarus clarkii (crustacea: decapod), in china. | a novel disease of crayfish procambarus clarkii appeared in the summer of 2004 in freshwater aquaculture in jiangsu province of china. light and transmission electron microscopy (tem), molecular biological methods and in vitro culture were used to identify the pathogen. the agent was unique in having a helical morphology and rotary motility as observed by phase-contrast light microscopy and was found in haemolymph, muscles, nerves and connective tissues by smear method and tem. ultra-thin sectio ... | 2005 | 16000238 |
| analysis of variable genomic loci in white spot syndrome virus to predict its origins in procambarus clarkii crayfish farmed in china. | variable genomic loci were examined in 4 white spot syndrome virus (wssv) isolates (08hb, 09hb, 08js and 09js) from procambarus clarkii crayfish collected from jiangsu and hubei provinces in china in 2008 and 2009. in orf75, sequence variation detected in the 4 isolates, as well as in isolates sequenced previously, suggested that wssv might have segregated into 2 lineages since first emerging as a serious pathogen of farmed shrimp in east asia in the early-mid 1990s, with one lineage remaining i ... | 2011 | 22013750 |
| detection of toxoplasma gondii in shellfish and fish in parts of china. | in this study, a total of 3432 aquatic animals covering eight species were tested by specific polymerase chain reaction (pcr) assays to investigate the presence of toxoplasma gondii, in china. the results showed that, out of 618 procambarus clarkii samples collected from the different areas in southeast china, four samples from jiangxi province were positive. of 456 hypophthalmichthys molitrix samples, one sample from jiangsu province was positive. in addition, there was only one positive sample ... | 2014 | 24331298 |