A literature review as an aid to identify strategies for mitigating ostreid herpesvirus 1 in Crassostrea gigas hatchery and nursery systems

• Published in: Reviews in Aquaculture
• Main Authors: Rodgers, Chris, Arzul, Isabelle, Carrasco, Noèlia, Furones Nozal, Dolores
• Other Authors: Horizon 2020 Framework Programme
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2018
• Subjects: Pacific; Crassostrea gigas
• Online Access: http://dx.doi.org/10.1111/raq.12246; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fraq.12246; https://onlinelibrary.wiley.com/doi/pdf/10.1111/raq.12246; https://onlinelibrary.wiley.com/doi/full-xml/10.1111/raq.12246

Abstract An understanding of husbandry strategies and any associated risk factors is important for designing management control measures that can reduce mortality in Pacific oysters, Crassostrea gigas , caused by ostreid herpesvirus 1 (Os HV ‐1). The type of culture facility can be considered in relation to the potential pathways that could lead to the entry of a pathogen and its survival. In addition, the animal host (e.g. age, physiological state, selective breeding programmes), husbandry procedures (e.g. stocking density), the pathogen itself (e.g. pathogenicity, virulence) and environmental effects (e.g. temperature) represent other relevant interconnected factors. However, all these factors provide valuable background information for outlining the mitigation strategies needed by the industry, as well as in the context of surveillance and biosecurity programmes. These control mechanisms for hatchery or nursery areas are related to movement restrictions, water treatment, virus inactivation, the production calendar and practical farm management decisions. This comprehensive literature review compiles information related to such approaches and also includes the different existing guidelines suggested for control of Os HV ‐1. Therefore, the review represents a solid foundation for a more critical appraisal currently being developed to support recommendations for disease management strategies.