Salinity effects on immune parameters of Ruditapes philippinarum challenged with Vibrio tapetis.
Dis Aquat Organ
; 56(3): 249-58, 2003 Oct 24.
Article
en En
| MEDLINE
| ID: mdl-14667037
The occurrence of brown ring disease (BRD) in farmed Manila clams Ruditapes philippinarum is seasonal. Development of the disease is believed to require the presence of the infective agent Vibrio tapetis and particular environmental conditions. This paper studies the effect of salinity (20 to 40 per thousand) on measurable immune parameters of Manila clams, and the progression of BRD in experimentally infected individuals. At 20 per thousand salinity, the total haemocyte count was reduced and disease prevalence was highest. At 40 per thousand salinity significantly fewer clams presented signs of BRD, and this was correlated with increases in the total haemocyte count, hyalinocyte count, phenoloxidase levels and phagocytic activity of haemocytes. Inoculation of clams with V. tapetis did not have a significant effect on the immune parameters measured. Thus, this laboratory-based study relates environmental stress to disease development.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Agua de Mar
/
Vibrio
/
Bivalvos
/
Hemocitos
Tipo de estudio:
Risk_factors_studies
Límite:
Animals
País/Región como asunto:
Europa
Idioma:
En
Revista:
Dis Aquat Organ
Asunto de la revista:
BIOLOGIA
/
MEDICINA VETERINARIA
/
MICROBIOLOGIA
Año:
2003
Tipo del documento:
Article
Pais de publicación:
Alemania