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ICES Journal of Marine Science: Journal du Conseil Advance Access published online on October 31, 2007
ICES Journal of Marine Science: Journal du Conseil, doi:10.1093/icesjms/fsm154
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© 2007 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Aggregata octopiana (Protista: Apicomplexa): a dangerous pathogen during commercial Octopus vulgaris ongrowing

Camino Gestal, Angel Guerra and Santiago Pascual

Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain

Correspondence to S. Pascual: tel: +34 986 291330; fax: +34 986 292762; e-mail: spascual{at}iim.csic.es

Gestal, C., Guerra, A., and Pascual, S. 2007. Aggregata octopiana (Protista: Apicomplexa): a dangerous pathogen during commercial Octopus vulgaris ongrowing. – ICES Journal of Marine Science, 64.

The haemolymph parameters for Octopus vulgaris and the condition index at molecular level were analysed using RNA/DNA and RNA/protein ratios on animals reared in floating cage systems and naturally infected by the coccidian Aggregata octopiana. Statistical analysis showed that as A. octopiana infection increased, there was a decrease in most inorganic elements and/or in haemocyte concentrations in cellular and/or plasma fractions. Also, the protein concentrations in the haemolymph plasma fraction dropped significantly as the coccidian infection increased. Results suggest that the severity of the infection by A. octopiana is a limiting factor during commercial ongrowing of the common octopus, at least in floating cage systems. Control measurements are needed in aquaculture to avoid this environmental stressor.

Keywords: Aggregata octopiana, culture, Octopus vulgaris, pathogen

Received 2 July 2007; accepted 28 September 2007.


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