Artículo
Bonamiosis status in natural Ostrea puelchana beds in San Matías Gulf (Patagonia, Argentina), 14 years after an epizootic
Oehrens Kissner, Erica Mercedes; Doldan, María del Socorro
; Zaidman, Paula Cecilia
; Morsan, Enrique Mario
; Kroeck, Marina Andrea
Fecha de publicación:
24/07/2014
Editorial:
Inter-Research
Revista:
Diseases Of Aquatic Organisms
ISSN:
0177-5103
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
ABSTRACT: Between 1995 and 1996, Bonamia exitiosa caused an epizootic in San Matías Gulf, Argentina, that spread from a commercial culture site of Ostrea puelchana to natural beds located at the northeastern coast of the gulf. A mortality rate of 95% was registered in cultured oysters, and oysters from natural beds were also affected. The aims of this study were to assess the parasite prevalence in oyster beds and the demographic structure 14 yr after the epizootic. Two different oyster beds were studied during 2009 and 2010. Parasite prevalence was studied related to oyster aggregation, density, sex, and oyster size. Prevalence reached 35.3% at Las Grutas and 18.9% at Banco Reparo and was proportionally associated with density. Prevalence was also associated with the type of aggregation in Banco Reparo, where carrier oysters were more infected. Infection was independent of sex category, and infected oysters were larger than the non-infected ones. Oyster density decreased markedly compared to previous studies in both beds and mean sizes were lower, while prevalence doubled. Because of the persistence of the beds in this period, disease seems to control the population structure.
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Oehrens Kissner, Erica Mercedes; Doldan, María del Socorro; Zaidman, Paula Cecilia; Morsan, Enrique Mario; Kroeck, Marina Andrea; Bonamiosis status in natural Ostrea puelchana beds in San Matías Gulf (Patagonia, Argentina), 14 years after an epizootic; Inter-Research; Diseases Of Aquatic Organisms; 110; 1-2; 24-7-2014; 135-142
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