The roles of galectins in parasitic infections

Galectins is a family of multifunctional lectins. Fifteen galectins have been identified from a variety of cells and tissues of vertebrates and invertebrates. Galectins have been shown to play pivotal roles in host–pathogen interaction such as adhesion of pathogens to host cells and activation of host innate and adaptive immunity. In recent years, the roles … Continue reading The roles of galectins in parasitic infections

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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

LRFN (leucine-rich repeat and fibronectin type-III domain-containing protein) recognizes bacteria and promotes hemocytic phagocytosis in the Pacific oyster Crassostrea gigas

In bivalve mollusks, circulating hemocyte mediated phagocytosis is one of the primary ways to eliminate invading microbes. Here, we have identified one CgLRFN (leucine-rich repeat and fibronectin type-III domain-containing protein) in the Crassostrea gigas as a novel transmembrane LRR (Leucine-rich repeat) domain containing protein in C. gigas, homologous to the jawless fish VLR protein, that … Continue reading LRFN (leucine-rich repeat and fibronectin type-III domain-containing protein) recognizes bacteria and promotes hemocytic phagocytosis in the Pacific oyster Crassostrea gigas

Oyster virus may cause devastating results for Tasmania

Oyster supplies in Tasmania are being threatened by a viral disease, which is concerning to producers ahead of the Christmas period. The concern in the sector stems from the fact that the virus causing Pacific Oyster Mortality Syndrome (POMS), which is harmless to humans, weakens oysters and makes them lose their ability to close their … Continue reading Oyster virus may cause devastating results for Tasmania

Development of a duplex Taqman real-time PCR assay for rapid identification of Vibrio splendidus-related and V. aestuarianus strains from bacterial cultures

To enable the rapid and accurate identification of Vibrio splendidus-related and V. aestuarianus strains associated with Pacific cupped oyster Crassostrea gigas mortality, we developed a duplex Taqman real-time PCR assay and evaluated its efficacy. This technique proved to be rapid, sensitive, and specific and will be particularly valuable for epidemiologic studies. Denis Saulnier, Sophie De … Continue reading Development of a duplex Taqman real-time PCR assay for rapid identification of Vibrio splendidus-related and V. aestuarianus strains from bacterial cultures

Double résistance aux infections dues aux organismes pathogènes Vibrio aestuarianus et OsHV-1 chez l’huître creuse Crassostrea gigas – DORE. Rapport scientifique final de l’étude DORE, convention DPMA-Ifremer 2016

Depuis 2012, le nombre de cas de mortalités d’huîtres creuses adultes (Crassostrea gigas) rapportés dans le cadre des réseaux de surveillance de l’Ifremer, et dans lesquels la bactérie Vibrio aestuarianus a été isolée, a fortement augmenté. Les objectifs de cette étude étaient (1) d’étudier la sensibilité des huîtres C. gigas à une infection à V. … Continue reading Double résistance aux infections dues aux organismes pathogènes Vibrio aestuarianus et OsHV-1 chez l’huître creuse Crassostrea gigas – DORE. Rapport scientifique final de l’étude DORE, convention DPMA-Ifremer 2016

Population-specific genotype x genotype x environment interactions in bacterial disease of early life stages of Pacific oyster larvae

The consequences of emerging marine diseases on the evolutionary trajectories of affected host populations in the marine realm are largely unexplored. Evolution in response to natural selection depends on the genetic variation of the traits under selection and the interaction of these traits with the environment (GxE). However, in the case of diseases, pathogen genotypes … Continue reading Population-specific genotype x genotype x environment interactions in bacterial disease of early life stages of Pacific oyster larvae