The effect of air exposure, handling stress and imidacloprid on the susceptibility of Crassostrea gigas to ostreid herpesvirus 1 (OsHV-1)

The emergence of the microvariants genotype of ostreid herpesvirus 1 (OsHV-1 µVar) has caused mass mortalities of Pacific oysters Crassostrea gigas, resulting in significant economic losses in Europe, New Zealand and Australia. There is variability in the occurrence and severity of disease caused by OsHV-1, with the disease incompletely described by the known complex interactions … Continue reading The effect of air exposure, handling stress and imidacloprid on the susceptibility of Crassostrea gigas to ostreid herpesvirus 1 (OsHV-1)

Potential of genomic selection for improvement of resistance to Ostreid Herpes virus in Pacific oyster (Crassostrea gigas)

In genomic selection (GS), genome-wide SNP markers are used to generate genomic estimated breeding values (gEBVs) for selection candidates. The application of GS in shellfish looks promising and has the potential to help in dealing with one of the main issues currently affecting Pacific oyster production worldwide, which is the “summer mortality syndrome”. This causes … Continue reading Potential of genomic selection for improvement of resistance to Ostreid Herpes virus in Pacific oyster (Crassostrea gigas)

Long-term temporal and spatial patterns of Ostreid herpesvirus 1 (OsHV-1) infection and mortality in sentinel Pacific oyster spat (Crassostrea gigas) inform farm management

Highlights • There is a consistent seasonal pattern of transmission and mortality with Ostreid herpesvirus-1 in Australia. • Non-progressive sub-clinical OsHV-1 infections also occur throughout the seasonal window. • OsHV-1 mortality is associated with water temperature, but the threshold is about 5 °C warmer in Australia than in Europe. • Strategic temporal and spatial placement of … Continue reading Long-term temporal and spatial patterns of Ostreid herpesvirus 1 (OsHV-1) infection and mortality in sentinel Pacific oyster spat (Crassostrea gigas) inform farm management

Experimental infection of Mytilus edulis by two Vibrio splendidus‐related strains: Determination of pathogenicity level of strains and influence of the origin and annual cycle of mussels on their sensitivity

This study aimed at assessing the pathogenicity of two Vibrio splendidus‐related species and evaluating the influence of the origin and annual life cycle of mussels on their sensitivity during a bacterial challenge. Thus, in vivo infection assays were made with Vibrio crassostreae 7T4_12 and Vibrio splendidus 3G1_6, over, respectively, thirteen and 9 months, on adult … Continue reading Experimental infection of Mytilus edulis by two Vibrio splendidus‐related strains: Determination of pathogenicity level of strains and influence of the origin and annual cycle of mussels on their sensitivity

Different in vivo growth of ostreid herpesvirus 1 at 18 °C and 22 °C alters mortality of Pacific oysters (Crassostrea gigas)

Seasonally recurrent outbreaks of mass mortality in Pacific oysters (Crassostrea gigas) caused by microvariant genotypes of ostreid herpesvirus 1 (OsHV-1) occur in Europe, New Zealand and Australia. The incubation period for OsHV-1 under experimental conditions is 48-72 hours and depends on water temperature, as does the mortality. An in vivo growth curve for OsHV-1 was … Continue reading Different in vivo growth of ostreid herpesvirus 1 at 18 °C and 22 °C alters mortality of Pacific oysters (Crassostrea gigas)

Review: Antibacterial components of the Bivalve’s immune system and the potential of freshwater bivalves as a source of new antibacterial compounds

Antibacterial research is reaching new heights due to the increasing demand for the discovery of new substances capable of inhibiting bacteria, especially to respond to the appearance of more and more multi-resistant strains. Bivalves show enormous potential for the finding of new antibacterial compounds, although for that to be further explored, more research needs to … Continue reading Review: Antibacterial components of the Bivalve’s immune system and the potential of freshwater bivalves as a source of new antibacterial compounds

Immune recognition, antimicrobial and opsonic activities mediated by a sialic acid binding lectin from Ruditapes philippinarum

Highlights • A sialic acid binding lectin (SABL) was identified from the manila clam Ruditapes philippinarum. • Recombinant RpSABL-1 showed a broad agglutination spectrum against Gram-positive and Gram-negative bacteria. • RpSABL-1 could function as a pattern recognition receptor with broad recognition spectrum. S. Li and al., Fish & Shellfish Immunology, Volume 93, October 2019, Pages … Continue reading Immune recognition, antimicrobial and opsonic activities mediated by a sialic acid binding lectin from Ruditapes philippinarum