Abstract：
Fish viromes often provide insights into the origin and evolution of viruses affecting tetrapods, including those associated with imporant human diseases. However, despite fish being the most diverse vertebrate group, their viruses are still understudied. We investigated the viromes of fish on Chatham Island (Rēkohu), a geographically isolated island housing 9% of New Zealand\'s threatened endemic fish species. Using metatranscriptomics, we analyzed samples from seven host species across 16 waterbodies. We identified 19 fish viruses, including 16 potentially novel species, expanding families such as the Coronaviridae, Hantaviridae, Poxviridae, and the recently proposed Tosoviridae. Surprisingly, virome composition was not influenced by the ecological factors measured and smelt (Retropinna retropinna) viromes were consistent across lakes despite differences in host life history, seawater influence, and community richness. Overall, fish viromes across Rēkohu were highly diverse and revealed a long history of co-divergence between host and virus despite their unique and geographically isolated ecosystem.
摘要：
鱼类病毒通常提供有关影响四足动物的病毒起源和进化的见解，包括那些与重要的人类疾病相关的。然而,尽管鱼类是最多样化的脊椎动物，他们的病毒仍未得到充分研究。我们调查了查塔姆岛上的鱼类病毒类型（Rutekohu），一个地理上孤立的岛屿，居住着9%的新西兰特有鱼类。使用metatranscriptomics，我们分析了16个水体中7个宿主物种的样本。我们鉴定了19种鱼病毒,包括16个潜在的新物种，扩大家庭，如冠状病毒科，汉塔病毒科,痘病毒科,和最近提出的托索病毒科。令人惊讶的是,病毒体组成不受测量的生态因素的影响，尽管宿主生活史存在差异，但湖泊之间的熔炼（Retropinna）病毒体是一致的，海水影响,和社区的丰富。总的来说,Rkohu上的鱼类病毒具有高度多样性，尽管宿主和病毒具有独特且地理上隔离的生态系统，但它们之间存在长期的共同分歧。
