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Epidemiology of Bonamia ostrea infecting European flat oysters Ostrea edulis from Lake Grevelingen, The Netherlands
Epidemiology of Bonamia ostrea infecting European flat oysters Ostrea edulis from Lake Grevelingen, The Netherlands
- Source :
- Marine Ecology Progress Series, 409, 131-142, Marine Ecology Progress Series, 409, 131-142. Inter-Research, Marine Ecology Progress Series 409 (2010)
- Publication Year :
- 2010
-
Abstract
- Production of European flat oysters Ostrea edulis in the Netherlands has been hampered by the presence of the haplosporidian parasite Bonamia ostreae, which is now an enzootic species following its establishment after 1980. We analyzed histopathological data from annual shell- fish disease monitoring from 1988 to 2006 to quantify prevalence of B. ostreae in flat oyster stocks of the marine Lake Grevelingen. In addition, we estimated prevalence of B. ostreae on a monthly basis with field surveys in 2003. The parasite was detected with PCR, using specific primers for B. ostreae. Prevalence of B. ostreae was analyzed relative to O. edulis density, biomass and a range of environ- mental parameters. B. ostreae was detected in flat oysters throughout the year with a higher preva- lence in spring than in autumn, possibly due to termination of spawning and the onset of oyster growth in autumn. Although B. ostreae was detected in all oyster weight classes, prevalence was highest in the largest oysters in spring and declined disproportionately in autumn, possibly due to high mortality of large oysters before autumn, suggesting that prevalence depends on oyster age. Parasite prevalence was independent of oyster density and total biomass, but appeared to be higher after a warm autumn. Abundance of the flat oyster (infected or non-infected with B. ostreae) was neg- atively related to the temperature of the preceding period, suggesting that mortality in flat oysters increased at higher water temperatures. Furthermore, O. edulis appeared to be more susceptible to B. ostreae after years with lower food availability and lower salinities (
- Subjects :
- Oyster
animal structures
Epidemiology
Bioinformatica & Diermodellen
growth
Zoology
rates
Aquatic Science
Biology
salinity
Bonamia ostreae
galicia nw spain
ireland
biology.animal
Bio-informatics & Animal models
Epidemiology, Bio-informatics & Animal models
Ostrea edulis
CIDC - Divisie Bacteriologie en TSE's
Ecology, Evolution, Behavior and Systematics
Shellfish
Nature and Landscape Conservation
Epidemiologie
Ecology
haplosporidia
fungi
food and beverages
temperature
Aquatic animal
pcr assay
Pacific oyster
biology.organism_classification
equipment and supplies
Wageningen Marine Research
Fishery
Epidemiologie, Bioinformatica & Diermodellen
parasite
Crassostrea
coast
Bonamia
Subjects
Details
- Language :
- English
- ISSN :
- 01718630
- Volume :
- 409
- Database :
- OpenAIRE
- Journal :
- Marine Ecology Progress Series
- Accession number :
- edsair.doi.dedup.....3a9e713d20ec2017eee30cd5f8c3e0ec
- Full Text :
- https://doi.org/10.3354/meps08594