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首页> 外文期刊>North American Journal of Aquaculture >Hydrogen peroxide treatments administered to hatchery-reared Burbot: assessing treatment regimes from embryonic development through juvenile rearing.
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Hydrogen peroxide treatments administered to hatchery-reared Burbot: assessing treatment regimes from embryonic development through juvenile rearing.

机译：对孵化场饲养的Burbot进行过氧化氢处理：评估从胚胎发育到幼稚饲养的处理方案。

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摘要

Burbot Lota lota is an emerging aquaculture species, in which fungal infestations during early life stage development are common. In this study, the tolerance of Burbot to external hydrogen peroxide (H2O2) treatment regimes was examined during four early life stages to determine species and life stage-specific sensitivity. Yolk-sac larvae tolerated three 1-h treatments up to 250 micro L/L H2O2 without significant reduction in survival. Preflexion larvae tolerated only 100 micro L/L H2O2 before survival was affected. In both cases, decreased survival was only observed after administration of three consecutive treatments. Flexion larvae tolerated up to 250 micro L/L H2O2, but by the juvenile stage sensitivity again increased to 100 micro L/L H2O2 before survival was affected. In these latter stages, decreased survival was observed immediately following the first H2O2 treatment, suggesting a mechanism for toxicity that is different than that in previous life stages. As has previously been shown, H2O2 can be effective for controlling aquatic bacteria and fungus at or below 250 micro L/L, and our results indicate that H2O2 concentrations currently used during Burbot egg incubation may be extended into the larval rearing stage for effective fungal control without negatively affecting survival of either eggs or newly hatched larvae. Additionally, treatment regimes may be continued through juvenile development for the purpose of controlling external pathogens in the hatchery production of Burbot.
机译：Burbot Lota lota是一种新兴的水产养殖物种，在生命的早期阶段，真菌侵扰很普遍。在这项研究中，研究了Burbot在生命的四个早期阶段对外部过氧化氢（H 2 O 2 ）处理方案的耐受性，以确定物种和生命阶段特异性敏感性。卵黄囊幼虫可耐受3种1小时治疗，最高可达250 micro L / L H 2 O 2 ，而存活率没有明显降低。屈曲前幼虫仅能耐受100 micro L / L H 2 O 2 。在这两种情况下，仅在连续施用三种治疗后才观察到存活率降低。屈曲幼虫最高可耐受250 micro L / LH 2 ，但是到了幼年期，敏感性又提高到100 micro L / LH 2 O 2 会影响生存率。在随后的这些阶段中，首次进行H 2 O 2 处理后，立即观察到存活率下降，这表明其毒性机制不同于先前的生命阶段。如前所述，H 2 O 2 可以有效地控制250 micro L / L或以下的水生细菌和真菌，我们的结果表明H 2 O 2 浓度可以扩展到幼虫饲养阶段，以有效地控制真菌，而不会对卵或新孵化的幼虫的存活产生负面影响。另外，为了控制Burbot孵化场生产中的外部病原体，可以通过幼体发育继续治疗方案。

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