A symposium on protozoan diseases of aquatic animals was planned as a feature of the 10th International Congress of Protozoology. Speakers invited for the symposium were: Dr Mike Hine, NIWA, NZ, an expert on oyster and fish diseases, Prof. Tim Flegel, Mahidol University, Bangkok, an expert on prawn...

The study has confirmed that estuarine acidification, associated with drainage of acid sulfate soils, reduces growth rates and survival in Sydney rock oysters leading to significant production losses. The work has also demonstrated that acidification is not a factor in outbreaks of QX disease. The...