کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2424136 | 1552946 | 2009 | 5 صفحه PDF | دانلود رایگان |
A long-term environmental study was conducted to evaluate the significance of water temperature, pH and salinity on the prevalence of Streptococcus iniae mortalities in barramundi sea-cage facilities. It was determined that there is a strong association between temperature and increased mortality, specifically between 25 and 28 °C. Temperatures outside of that range result in decreased mortalities attributed to S. iniae. There was no statistical significance between pH or salinity and S. iniae induced mortality (p > 0.05), although acidic conditions (< pH 6) occurring due to anthropogenic disturbances did result in acute mortalities and S. iniae was recovered from approximately 70% these fish. Laboratory challenge studies confirmed the temperature dependence of S. iniae infections as well as the increased susceptibility of barramundi to S. iniae during acid water conditions.
Journal: Aquaculture - Volume 290, Issues 3–4, 19 May 2009, Pages 224–228