Sequence data were combined with morphological analyses to identify two lepocreadiid trematode species from jellyfishes and fishes. Three species of jellyfish were captured within Port Phillip Bay, Australia, and three species of fish that feed on jellyfish were obtained from Moreton Bay (Queensland) and Port Phillip Bay and Portland (Victoria). The digeneans were distributed throughout most parts of the jellyfish. Opechona cf. kahawai Bray & Cribb, 2003 parasitized the scyphozoan jellyfish Aequorea eurodina and the scombrid fish Scomber australasicus. Cephalolepidapedon warehou Bray & Cribb, 2003 parasitized the scyphozoans Pseudorhiza haeckeli and Cyanea annaskala, and the centrolophid fishes Seriolella brama and Seriolella punctata. Intensities ranged from four to 96 in the jellyfish, and one to 30 in the fish. For both trematode species, internal transcribed spacer 2 of ribosomal DNA sequences from mature adults in the fishes matched those from metacercariae from the jellyfish. This is the first record of larval stages of C. warehou and O. cf. kahawai, and the first use of DNA sequencing to identify digenean trematode metacercariae from jellyfish. Three new host records are reported for C. warehou and two for O. cf. kahawai.

中文翻译：

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DNA测序证明了水母在吸虫生命周期中的重要性

将序列数据与形态分析相结合，从水母和鱼类中鉴定出两种 lepocreadiid 吸虫物种。在澳大利亚菲利普港湾捕获了三种水母，从莫顿湾（昆士兰）和菲利普港湾和波特兰（维多利亚）获得了三种以水母为食的鱼。digeneans 分布在水母的大部分部位。欧佩乔纳参看。卡哈威Bray & Cribb, 2003 寄生于 scyphozoan 水母水母和鲭鱼澳洲鹬.头孢甲螈仓库Bray & Cribb, 2003 寄生于 scyphozoans假根瘤菌和蓝花楹, 和中心鱼斑蝥和斑蝥。水母的强度从 4 到 96 不等，鱼的强度从 1 到 30 不等。对于这两种吸虫物种，来自鱼类成熟成虫的核糖体DNA序列的内部转录间隔2与来自水母的囊蚴相匹配。这是幼虫阶段的第一个记录C、仓库和O。参看。卡哈威，以及首次使用 DNA 测序从水母中鉴定出双吸虫囊蚴。报告了三个新的主机记录C、仓库和两个O。参看。卡哈威.