IFREMER, LEAD, BP 2059, 98846 Nouméa cedex, New Caledonia.
Mar Pollut Bull. 2010 Mar;60(3):402-11. doi: 10.1016/j.marpolbul.2009.10.012. Epub 2009 Nov 25.
A field survey was conducted on two intensive shrimp farms using similar technical practices: one (DF) historically affected by a vibriosis, the other (HC) in which the pathogen has been observed although no mortality event has occurred. Because historical data suggest that eutrophication process may directly or indirectly play a role in the disease outbreak, we focussed our research on its dynamics. A higher variability of the phytoplanktonic compartment linked to an imbalance in the molar N:P ratio was observed in farm DF compared to farm HC, implying a modification on the linkage between the bacteria and phytoplankton compartments at DF. The beginning of the mortality outbreak at DF followed a shift from pico- to nanophytoplankton. The organic matter mineralization process at the water-sediment interface may explain the disturbance observed in the water column during eutrophication. The consequences of this disturbance on shrimps' health status and pathogen ecology are discussed.
一家（DF）历史上受到弧菌病的影响，另一家（HC）虽然观察到了病原体，但没有发生死亡事件。由于历史数据表明，富营养化过程可能直接或间接地在疾病爆发中发挥作用，我们的研究集中在其动态上。与摩尔 N:P 比率失衡相关的浮游植物区系的更高变异性在 DF 养殖场中被观察到，这意味着在 DF 养殖场中，细菌和浮游植物区系之间的联系发生了变化。DF 养殖场的死亡爆发始于从微微型浮游植物到纳米浮游植物的转变。水-沉积物界面的有机物矿化过程可能解释了富营养化过程中水柱中观察到的干扰。这种干扰对虾类健康状况和病原体生态学的影响将在文中讨论。
