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Título

Malabsorption syndrome observed in the common octopus Octopus vulgaris infected with Aggregata octopiana (Protista: Apicomplexa)

AutorGestal, C. ; Páez de la Cadena, M.; Pascual, Santiago
Palabras claveOctopus vulgaris
Aggregata octopiana
Absorption enzymes
Maltase
Leucine-aminopeptidase
Acid phosphatase
Lysosomic enzyme
Fecha de publicaciónago-2002
EditorInter Research
CitaciónDiseases of Aquatic Organisms 51(1): 61-65 (2002)
ResumenOctopus vulgaris infected with Aggregata octopiana were collected from an open-water culture system in the Ría of Aldán (NW Spain). Digestive tract infection values were determined with the use of a Neubauer chamber by counting the number of A. octopiana sporocysts. After determining enzyme activity values by the colorimetric Api-Zym system Biomerieux®, one representative enzyme of glycosidases, peptid hydrolases and phosphoric hydrolases showing high activity was spectrophotometrically analysed. The enzymes were maltase and leucine-aminopeptidase (LAP) involved in the absorption process, and acid phosphatase, a lysosomic enzyme, respectively. Enzymatic activity of maltase and LAP decreased significantly, with increased sporocyst counts. However, acid phosphatase activity increased with severity of infection, indicating the presence of degradative enzymes from phagocytic cells in the infected area. A detrimental effect on gastrointestinal function may result from a decrease or malfunction of absorption enzymes. The results suggest a malabsorption syndrome resulting from parasitic infection.
Descripción5 pages, 4 tables.
Versión del editorhttp://dx.doi.org/10.3354/dao051061
URIhttp://hdl.handle.net/10261/26233
DOI10.3354/dao051061
ISSN0177-5103
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