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A suspected new enteric Sphaerospora species was believed to be directly associated with the mass mortality of yearling groupers of Epinephelus spp. in South China. The epizootic generally emerged from late September to late April of the following year. The infection prevalence and mortality rate were significantly negatively correlated with fish size. Clinical signs included anorexia, cachexia and...
A new enteric microsporidian was found to be associated with the mass mortality of hatchery‐bred juvenile groupers, Epinephelus spp., in China. The outbreak usually occurred during the rainy season between May and November when water temperature ranged from 26 to 30 °C and salinity from 28 to 34 ppt, although this microsporidian can be detected year round. External clinical signs included severe emaciation,...
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