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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Effects of CO2-induced seawater acidification on the health of Mytilus edulis Beesley, A.; Lowe, D.M.; Pascoe, C.A.; Widdicombe, S. (2008). Effects of CO2-induced seawater acidification on the health of Mytilus edulis. Clim. Res. 37: 215-225. https://dx.doi.org/10.3354/cr00765 In: Climate Research. Inter-Research: Oldendorf/Luhe. ISSN 0936-577X; e-ISSN 1616-1572, meer Ook verschenen in: Fortier, L.; Hawkins, S.; Kleypas, J.; Lima, M.; Ottersen, G.; Pörtner, H.O.; Shirayama, Y.; Stenseth, N.Ch. (Ed.) (2008). Effects of climate change on marine ecosystems: Selected papers from Inter-Research Symposium No. 2, held in conjunction with the 42nd European Marine Biology Symposium (EMBS), August 27-31, 2007, Kiel, Germany. European Marine Biology Symposia, 42. Climate Research, 37(2-3). 121-270 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Open access 225764 [ download pdf ]

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Trefwoorden

Mytilus edulis Linnaeus, 1758 [WoRMS] Marien/Kust

Author keywords

Mytilus edulis; Ocean acidification; Seawater pH; Lysosomes; Neutral red retention assay

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Auteurs		Top
Beesley, A. Lowe, D.M. Pascoe, C.A. Widdicombe, S., meer

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Abstract

The impact of CO2-acidified seawater (pH 7.8, 7.6, or 6.5, control = pH 8) on the health of Mytilus edulis was investigated during a 60 d mesocosm experiment. Mussel health was determined using the neutral red retention (NRR) assay for lysosomal membrane stability and from histopathological analysis of reproductive, digestive and respiratory tissues. Seawater acidification was shown to significantly reduce mussel health as measured by the NRR assay, and it is suggested that this impact is due to elevated levels of calcium ions (Ca2+) in the haemolymph, generated by the dissolution of the mussels’ calcium carbonate shells. No impact on tissue structures was observed, and it is concluded that M. edulis possess strong physiological mechanisms by which they are able to protect body tissues against short-term exposure to highly acidified seawater. However, these mechanisms come at an energetic cost, which can result in reduced growth during long-term exposures. Consequently, the predicted long-term changes to seawater chemistry associated with ocean acidification are likely to have a more significant effect on the health and survival of M. edulis populations than the short-lived effects envisaged from CO2 leakage from sub-seabed storage. Ocean acidification could reduce the general health status of this commercially and ecologically important marine species.

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