A novel monoclonal Perkinsus chesapeaki in vitro isolate from an Australian cockle, Anadara trapezia

A monoclonal Perkinsus chesapeaki isolate was established from 1 of 10 infected Australian Anadara trapezia cockles. Morphological features were similar to those of described P. chesapeaki isolates, and also included a unique vermiform schizont cell-type. Perkinsus olseni-specific PCR primers amplified DNAs from all 10 cockles. Perkinsus chesapeaki-specific primers also amplified DNAs from 4/10 cockles, including … Continue reading A novel monoclonal Perkinsus chesapeaki in vitro isolate from an Australian cockle, Anadara trapezia

The interaction between algal viruses and the mussel Mytilus galloprovincialis Lamarck, 1819 (Bivalvia: Mytilidae) in experiments

The utilization (possible assimilation and concentration in organs) of 99% of algal viruses from the water by the Black Sea mussel Mytilus galloprovincialis was confirmed experimentally. This index depends on the duration of the experiment, the complexity of the morphology of the virus, the age (size) of the mussels, and the presence of a nonindicatory … Continue reading The interaction between algal viruses and the mussel Mytilus galloprovincialis Lamarck, 1819 (Bivalvia: Mytilidae) in experiments

Detection and distribution of ostreid herpesvirus 1 in experimentally infected Pacific oyster spat

High mortality rates are reported in spat and larvae of Pacific oyster Crassostrea gigas and associated with ostreid herpesvirus 1 (OsHV-1) detection in France. Although the viral infection has been experimentally reproduced in oyster larvae and spat, little knowledge is currently available concerning the viral entry and its distribution in organs and tissues. This study … Continue reading Detection and distribution of ostreid herpesvirus 1 in experimentally infected Pacific oyster spat

Distinct immune responses of juvenile and adult oysters (Crassostrea gigas) to viral and bacterial infections

Since 2008, massive mortality events of Pacific oysters (Crassostrea gigas) have been reported worldwide and these disease events are often associated with Ostreid herpesvirus type 1 (OsHV-1). Epidemiological field studies have also reported oyster age and other pathogens of the Vibrio genus are contributing factors to this syndrome. We undertook a controlled laboratory experiment to … Continue reading Distinct immune responses of juvenile and adult oysters (Crassostrea gigas) to viral and bacterial infections

Ostreid herpesvirus: A pathogen of oysters

Ostreid Herpesvirus-1 (OsHV-1), OsHV-1 μvar and other variants are herpesviruses causing heavy mortalities, with losses ranging from 50 to 100%, on Pacific oyster (Crassostrea gigas), an important species worldwide cultured. Ostreid Herpesvirus-1 is one of the top 50 largest viral genome; OsHV-1 μvar is a variant of the virus OsHV-1 showing a systematic deletion of … Continue reading Ostreid herpesvirus: A pathogen of oysters

The mussel Mytilus edulis L. as an important reservoir of infectious hypodermal and hematopoietic necrosis virus (IHHNV)

Infectious hypodermal and haematopoietic necrosis virus (IHHNV) is a shrimp pathogen that causes disease and consequently has a negative impact on the shrimp acquaculture economy. The IHHNV was first isolated in Hawaii in the early 1980s (Lightner, Redman & Bell 1983; Lightner, Redman, Bell & Brock 1983), and the virus is now recognized as one … Continue reading The mussel Mytilus edulis L. as an important reservoir of infectious hypodermal and hematopoietic necrosis virus (IHHNV)

Seasonal dynamics and metagenomic characterization of marine viruses in Goseong Bay, Korea

Viruses are the most abundant biological entities in the oceans, and account for a significant amount of the genetic diversity of marine ecosystems. However, there is little detailed information about the biodiversity of viruses in marine environments. Rapid advances in metagenomics have enabled the identification of previously unknown marine viruses. We performed metagenomic profiling of … Continue reading Seasonal dynamics and metagenomic characterization of marine viruses in Goseong Bay, Korea