鱼的生命早期阶段死亡率综合症大湖和波罗的海

临床和病理的研究波罗的海鲑鱼遭受卵黄囊炒死亡率

j . Lundstrom h . Borjeson和l . Norrgren

doi:https://doi.org/10.47886/9781888569087.ch7

文摘.-Feral波罗的海的股票鲑鱼大西洋鲑患有指定M74卵黄囊炸死亡综合症。这个研究表明,M74依赖家庭,100%的死亡率在受影响的家庭组。家庭组之间的差异指出关于年龄疾病表现的时候,和相应的组分为那些早期,中间,或延迟疾病的发展。家庭组疾病的早期发展生存时间短,5 - 10 d后全家死了。家庭组与后期开发疾病存活的时间较长。M74的三个连续阶段,临床、临床和终端。没有临床症状的疾病中可以看到新孵化的炒。在开发期间,卵黄囊炒逐步通过临床前阶段,进入临床阶段,特点是加重神经症状。在终端阶段,大部分的症状可能继发于低心率在疾病发展。总值M74包括膨胀胆囊的病理特点,苍白的脾脏和卵黄囊沉淀。 Yolk sac fry with M74 also have diminished yolk absorption and faster consumption of the pigments in the yolk sac fat droplet. To further elucidate the pathogenesis of M74 and to determine the involvement of nutritional and toxicological factors, future work must include both histological and functional studies of tissues with regard to the symptoms and gross pathological characteristics of M74. However, because there is heterogenicity between family groups that develop M74, careful selection of experimental samples is necessary and should include categorization of each family group and definition of the stage of disease at sampling.