Latitudinal drivers of oyster mortality: deciphering host, pathogen and environmental risk factors.

ABSTRACT: Diseases pose an ongoing threat to aquaculture, fisheries and conservation of marine species, and determination of risk factors of disease is crucial for management. Our objective was to decipher the effects of host, pathogen and environmental factors on disease-induced mortality of Pacific oysters (Crassostrea gigas) across a latitudinal gradient. We deployed young and adult oysters at 13 sites in France and we monitored survival, pathogens and environmental parameters. The young oysters came from either the wild collection or the hatchery while the adults were from the wild only. We then used Cox regression models to investigate the effect of latitude, site, environmental factors and origin on mortality risk and to extrapolate this mortality risk to the distribution limits of the species

SUBMITTER: Fleury E 

PROVIDER: S-EPMC7190702 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature