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Ocean acidification and host–pathogen interactions: blue mussels, Mytilus edulis, encountering Vibrio tubiashii
Department of Biological and Environmental Sciences, University of Gothenburg.
Department of Biological and Environmental Sciences, University of Gothenburg.
Department of Biological and Environmental Sciences, University of Gothenburg.
College of Life and Environmental Sciences, University of Exeter.
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2014 (English)In: Environmental Microbiology, ISSN 1462-2912, E-ISSN 1462-2920, Vol. 16, no 4, 1029-1039 p.Article in journal (Refereed) Published
Abstract [en]

Ocean acidification (OA) can shift the ecological balance between interacting organisms. In this study, we have used a model system to illustrate the interaction between a calcifying host organism, the blue mussel Mytilus edulis and a common bivalve bacterial pathogen, Vibrio tubiashii, with organisms being exposed to a level of acidification projected to occur by the end of the 21st century. OA exposures of the mussels were carried out in relative long-term (4 months) and short-term (4 days) experiments. We found no effect of OA on the culturability of V. tubiashii, in broth or in seawater. OA inhibited mussel shell growth and impaired crystalline shell structures but did not appear to affect mussel immune parameters (i.e haemocyte counts and phagocytotic capacity). Despite no evident impact on host immunity or growth and virulence of the pathogen, V. tubiashii was clearly more successful in infecting mussels exposed to long-term OA compared to those maintained under ambient conditions. Moreover, OA exposed V. tubiashii increased their viability when exposed to haemocytes of OA-treated mussel. Our findings suggest that even though host organisms may have the capacity to cope with periods of OA, these conditions may alter the outcome of host–pathogen interactions, favouring the success of the latter.

Place, publisher, year, edition, pages
2014. Vol. 16, no 4, 1029-1039 p.
National Category
Microbiology
Identifiers
URN: urn:nbn:se:hkr:diva-11521DOI: 10.1111/1462-2920.12307ISI: 000333713300011OAI: oai:DiVA.org:hkr-11521DiVA: diva2:682105
Funder
Sida - Swedish International Development Cooperation Agency, SWE-2003-108
Note

Article first published online: 12 NOV 2013

Available from: 2013-12-23 Created: 2013-12-23 Last updated: 2014-10-03Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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