@article{fdi:010078762,
  title = {{L}atitudinal drivers of oyster mortality : deciphering host, pathogen and environmental risk factors},
  author = {{F}leury, {E}. and {B}arbier, {P}. and {P}etton, {B}. and {N}ormand, {J}. and {T}homas, {Y}oann and {P}ouvreau, {S}. and {D}aigle, {G}. and {P}ernet, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{D}iseases pose an ongoing threat to aquaculture, fisheries and conservation of marine species, and determination of risk factors of disease is crucial for management. {O}ur objective was to decipher the effects of host, pathogen and environmental factors on disease-induced mortality of {P}acific oysters ({C}rassostrea gigas) across a latitudinal gradient. {W}e deployed young and adult oysters at 13 sites in {F}rance and we monitored survival, pathogens and environmental parameters. {T}he young oysters came from either the wild collection or the hatchery while the adults were from the wild only. {W}e then used {C}ox 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 in {E}urope. {W}e found that seawater temperature, food level, sea level atmospheric pressure, rainfall and wind speed were associated with mortality risk. {T}heir effect on hatchery oysters was generally higher than on wild animals, probably reflecting that hatchery oysters were free of {O}streid herpesvirus 1 ({O}s{HV}-1) whereas those from the wild were asymptomatic carriers. {T}he risk factors involved in young and adult oyster mortalities were different, reflecting distinct diseases. {M}ortality risk increases from 0 to 90% with decreasing latitude for young hatchery oysters, but not for young wild oysters or adults. {M}ortality risk was higher in wild oysters than in hatchery ones at latitude > 47.6°{N} while this was the opposite at lower latitude. {T}herefore, latitudinal gradient alters disease-induced mortality risk but interacts with the initial health status of the host and the pathogen involved. {P}ractically, we suggest that mortality can be mitigated by using hatchery oysters in north and wild collected oysters in the south.},
  keywords = {{FRANCE} ; {PACIFIQUE} ; {ATLANTIQUE} {NORD}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {10},
  numero = {},
  pages = {7264 [12 ]},
  ISSN = {2045-2322},
  year = {2020},
  DOI = {10.1038/s41598-020-64086-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078762},
}