Environmental controls of oyster-pathogenic Vibrio spp. in Oregon estuaries and a shellfish hatchery

Vibrio spp. have been a persistent concern for coastal bivalve hatcheries, which are vulnerable to environmental pathogens in seawater used for rearing larvae, yet the biogeochemical drivers of oyster-pathogenic Vibrio in their planktonic state are poorly understood. Here, we present data tracking oyster-pathogenic Vibrio bacteria in Netarts Bay and Yaquina Bay, Oregon, USA, as well … Continue reading Environmental controls of oyster-pathogenic Vibrio spp. in Oregon estuaries and a shellfish hatchery

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Metabolomics study of immune responses of New Zealand Greenshell™ mussels (Perna canaliculus) infected with pathogenic Vibrio sp.

Vibrio coralliilyticus is a bacterial pathogen which can affect a range of marine organisms, such as corals, fish and shellfish, with sometimes devastating consequences. However, little is known about the mechanisms involved in the host-pathogen interaction, especially within molluscan models. We applied gas chromatography-mass spectrometry (GC-MS)-based metabolomics to characterize the physiological responses in haemolymph of … Continue reading Metabolomics study of immune responses of New Zealand Greenshell™ mussels (Perna canaliculus) infected with pathogenic Vibrio sp.

CO2-induced ocean acidification impairs the immune function of the Pacific oyster against Vibrio splendidus challenge: An integrated study from a cellular and proteomic perspective

Ocean acidification (OA) and pathogenic diseases pose a considerable threat to key species of marine ecosystem. However, few studies have investigated the combined impact of reduced seawater pH and pathogen challenge on the immune responses of marine invertebrates. In this study, Pacific oysters, Crassostrea gigas, were exposed to OA (~2000 ppm) for 28 days and then challenged … Continue reading CO2-induced ocean acidification impairs the immune function of the Pacific oyster against Vibrio splendidus challenge: An integrated study from a cellular and proteomic perspective

First evidence of viral and bacterial oyster pathogens in the Brazilian coast

Since 2008, oyster mortality outbreaks have been occurring worldwide, affecting the socio‐economic and cultural activity of many countries (Barbosa‐Solomieu, Renault, & Travers, 2015). The Ostreid herpesvirus 1 (OsHV‐1) is one of the main causative agents of these mortality outbreaks, affecting mainly the Pacific oyster Crassostrea gigas (=Magallana gigas; Thunberg, 1793), especially at young stages (EFSA … Continue reading First evidence of viral and bacterial oyster pathogens in the Brazilian coast

Three draft genome sequences of Vibrio coralliilyticus strains isolated from bivalve hatcheries

Reported here are the genome sequences of three Vibrio coralliilyticus isolates RE87, AIC-7, and 080116A. Each strain was isolated in association with oyster larvae in commercial aquaculture systems. These draft genomes will be useful for further studies in understanding the genomic features contributing to V. coralliilyticus pathogenicity. Hanna Kehlet-Delgado, Gary P. Richards, Claudia Häse,Ryan S. Mueller, … Continue reading Three draft genome sequences of Vibrio coralliilyticus strains isolated from bivalve hatcheries

Alteration of host-pathogen interactions in the wake of climate change – Increasing risk for shellfish associated infections?

The potential for climate-related spread of infectious diseases through marine systems has been highlighted in several reports. With this review we want to draw attention to less recognized mechanisms behind vector-borne transmission pathways to humans. We have focused on how the immune systems of edible marine shellfish, the blue mussels and Norway lobsters, are affected … Continue reading Alteration of host-pathogen interactions in the wake of climate change – Increasing risk for shellfish associated infections?

Isolation and characterization of a N4-like lytic bacteriophage infecting Vibrio splendidus, a pathogen of fish and bivalves

A novel virulent bacteriophage, vB_VspP_pVa5, infecting a strain of Vibrio splendidus was isolated from a sea-cage aquaculture farm in Greece, and characterized using microbiological methods and genomic analysis. Bacteriophage vB_VspP_pVa5 is a N4-like podovirus with an icosahedral head measuring 85 nm in length and a short non-contractile tail. The phage had a narrow host range … Continue reading Isolation and characterization of a N4-like lytic bacteriophage infecting Vibrio splendidus, a pathogen of fish and bivalves