Crossley Sharyl M G, George Anna L, Keller Christian J
Tennessee Aquarium, 1 Broad Street, Chattanooga, Tennessee 37402, USA.
J Zoo Wildl Med. 2009 Mar;40(1):174-80. doi: 10.1638/2008-0100.1.
On 2 December 2006, a heavy infestation of the parasitic hyperiid amphipods Hyperia medusarum and Lestrigonus shoemakeri was discovered in the sea nettles (Chrysaora fuscescens) exhibit at the Tennessee Aquarium. Pretreatment trials that exposed moon jellyfish (Aurelia aurita) and sea nettles to therapeutic levels of diflubenzuron confirmed that the treatment would be tolerated by these species of jellyfish. The exhibit tank was dosed with a 0.03 mg/L concentration of diflubenzuron for 7 days, after which the medication was removed by filtration. An arbitrarily chosen subset from the sea nettle exhibit was sampled regularly over the next 8 wk to monitor the parasite population. The average number of amphipods per jellyfish sampled decreased throughout the treatment and sampling period. No live amphipods were observed 6 wk after the start of treatment, and no negative side effects were observed in the sea nettles. The use of diflubenzuron to eradicate hyperiid parasites from scyphomedusae is a safe and useful option when properly applied in a controlled environment.
2006年12月2日，田纳西水族馆展出的海月水母（Chrysaora fuscescens）身上发现大量寄生性超体型挠足类动物——海月水蚤（Hyperia medusarum）和舒氏长腹水蚤（Lestrigonus shoemakeri）。将海月水母（Aurelia aurita）和海月水母暴露于治疗剂量的除虫脲的预处理试验证实，这些水母种类能够耐受该治疗方法。向展览水箱中加入浓度为0.03 mg/L的除虫脲，持续7天，之后通过过滤去除药物。在接下来的8周内，定期从海月水母展览区中随机选取一个子集进行采样，以监测寄生虫数量。在整个治疗和采样期间，每个采样水母身上的挠足类动物平均数量都在减少。治疗开始6周后未观察到活的挠足类动物，并且在海月水母身上未观察到负面副作用。在受控环境中正确应用时，使用除虫脲从钵水母纲动物中根除超体型寄生虫是一种安全且有用的选择。
