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

Gestal C, Guerra A, Pascual S ...see all

ICES Journal of Marine Science, vol. 64, issue 9 (2007) pp. 1743-1748

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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 hae- mocyte 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.

Author-supplied keywords

  • Aggregata octopiana
  • Culture
  • Octopus vulgaris
  • Pathogen

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  • Camino Gestal

  • Angel Guerra

  • Santiago Pascual

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