Comparative population genetic study of an important marine parasite from New Zealand flat oysters

The comparative genetic structure of hosts and parasites can reveal constraints acting on parasite dispersal among host populations and the evolution of local adaptation. We sampled New Zealand flat oysters Ostrea chilensis from 12 sites throughout New Zealand to (1) determine the distribution and prevalence of the haplosporidian parasites Bonamia exitiosa and B. ostreae, and … Continue reading Comparative population genetic study of an important marine parasite from New Zealand flat oysters

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Review of parasites and pathologies of the main bivalve species of commercial interest of Argentina and Uruguay, southwestern Atlantic coast

A systematic review of the parasites and pathologies of the main important commercially bivalve species from Argentina and Uruguay has been done. Bacteria, algae, Perkinsozoa, Haplosporidia, Ciliophora, Apicomplexa, Turbellaria, Trematoda, Cestoda and Nemertea have been found infecting natural populations of bivalve species. Disseminated neoplasia has been recorded in mussels from culture causing gonadal castration and … Continue reading Review of parasites and pathologies of the main bivalve species of commercial interest of Argentina and Uruguay, southwestern Atlantic coast

Survey of bivalve molluscs for Bonamia spp. and other parasitic pathogens in Florida east coast lagoons

A 2007 study of Suminoe (Crassostrea ariakensis) and eastern (Crassostrea virginica) oysters exposed to Indian River Lagoon (IRL), Florida waters revealed the presence of Bonamia spp. in exposed oysters. In 2010, a survey of oysters and other bivalves (n = 721, 18 species) was conducted in the southern IRL (10 sites) and in the more … Continue reading Survey of bivalve molluscs for Bonamia spp. and other parasitic pathogens in Florida east coast lagoons

Parasite threatens Bluff oyster population

There are fears a parasite discovered on two Oyster farms near Stewart Island could spread to the wild Bluff Oysters growing in Foveaux Strait. An emergency meeting was held in Wellington on Wednesday to develop a plan to stop that happening, and protect the delicacy. Bluff Community Board Chairman Ray Fife says "There is potential … Continue reading Parasite threatens Bluff oyster population

Haplosporidia

Haplosporidian species (phylum Haplosporidia Caullery & Mesnil, 1899) are a small group of four genera of sometimes pathogenic protozoan parasites usually with uninucleated spores. They are widely distributed in marine and freshwater invertebrates, although their status in Africa, much of Eurasia and Central and South America, is largely unknown. They infect molluscs including commercially important … Continue reading Haplosporidia

Flat oyster parasite found at Stewart Island

Cawthron Institute scientists are well-placed to respond to the discovery of Bonamia ostreae at oyster farms on Stewart Island. Bonamia ostreae is a parasite that poses substantial threat to flat oysters, and this afternoon the Ministry of Primary Industries (MPI) confirmed they have detected it at two Stewart Island farms. Cawthron Institute Aquaculture Group Manager, … Continue reading Flat oyster parasite found at Stewart Island