Genetic variation in anti-parasite behavior in oysters

Behavioral avoidance of disease-causing parasites provides a first line of defense against the threat of infection. We report that the suspension-feeding oysters Crassostrea virginica respond to the presence of the water-borne parasite Perkinsus marinus by increasing the rate of shell closure and decreasing the clearance of suspended particles from the surrounding seawater. The extent of … Continue reading Genetic variation in anti-parasite behavior in oysters

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Selection response in fish and shellfish: a review

The aquaculture sector is significantly behind plant and farm animal production in applying selective breeding, in spite of the fact that it has been suggested that the world aquaculture production could be doubled in 13 years if breeding programmes were supplying stocks for the farmed species. It is estimated that as late as in 2010, only … Continue reading Selection response in fish and shellfish: a review

A Genome-Wide Association Study for Host Resistance to Ostreid Herpesvirus in Pacific Oysters (Crassostrea gigas)

Ostreid herpesvirus (OsHV) can cause mass mortality events in Pacific oyster aquaculture. While various factors impact on the severity of outbreaks, it is clear that genetic resistance of the host is an important determinant of mortality levels. This raises the possibility of selective breeding strategies to improve the genetic resistance of farmed oyster stocks, thereby … Continue reading A Genome-Wide Association Study for Host Resistance to Ostreid Herpesvirus in Pacific Oysters (Crassostrea gigas)

Effects of triclosan on bacterial community composition and Vibrio populations in natural seawater microcosms

Pharmaceuticals and personal care products, including antimicrobials, can be found at trace levels in treated wastewater effluent. Impacts of chemical contaminants on coastal aquatic microbial community structure and pathogen abundance are unknown despite the potential for selection through antimicrobial resistance. In particular, Vibrio, a marine bacterial genus that includes several human pathogens, displays resistance to … Continue reading Effects of triclosan on bacterial community composition and Vibrio populations in natural seawater microcosms

VIVALDI, Preventing and mitigating farmed bivalve diseases, HORIZON2020

The overarching goal of VIVALDI is to increase the sustainability and competitiveness of the European shellfish industry by improving the understanding of bivalve diseases and by developing innovative solutions and tools for the prevention, control and mitigation of the major pathogens affecting the main European farmed shellfish species: Pacific oyster (Crassostrea gigas), mussels (Mytilus edulis … Continue reading VIVALDI, Preventing and mitigating farmed bivalve diseases, HORIZON2020

Integrating the Vibrio-resistance phenotype and gene expression data for discovery of markers used for resistance evaluation in the clam Meretrix petechialis

In this study, gene expression data were used to select resistance-associated markers that indicate resistance phenotypes in the clam Meretrix petechialis. A total of 1772 clams from 23 full-sibling families were subjected to a Vibrio challenge test, and the results showed significant variation in resistance to vibriosis among different families. Three of the most resistant … Continue reading Integrating the Vibrio-resistance phenotype and gene expression data for discovery of markers used for resistance evaluation in the clam Meretrix petechialis

Comparative and evolutionary analysis of an adapter molecule MyD88 in invertebrate metazoans

The myeloid differentiation factor 88 (MyD88) is an essential adapter in Toll-like receptor (TLR) signalling pathways, with TLR the first pattern-recognition receptor (PRR) that was discovered in Drosophila. In the present study, a MyD88 gene was identified and characterized from a commercially important shellfish, Scapharca subcrenata, including a DEATH domain and TIR domain conserved within … Continue reading Comparative and evolutionary analysis of an adapter molecule MyD88 in invertebrate metazoans