Transposable elements (TEs) are important components of eukaryotic genomes and compose around 30% of the genome of Rhinella marina, an invasive toad species. Considering the possible role of TEs in the adaptation of populations, we have analyzed the expression of TEs in publicly available spleen tissue transcriptomic data generated for this species after immune and stress challenge. By analyzing the transcriptome assembly, we detected a high number of TE segments. Moreover, some distinct TE families were differentially expressed in some conditions. Our result shows that several TEs are capable of being transcribed in R. marina and they could help to generate a rapid response of specimens to the environment. Also, we can suggest that these TEs could be activated in the germinative cells as well producing variability to be selected and shaped by the evolutionary processes behind the success of this invasive species. Thus, the TEs are important targets for investigation in the context of R. marina adaptation.

转座因子 (TE) 是真核生物基因组的重要组成部分，构成了入侵蟾蜍物种Rhinella marina基因组的约 30%。考虑到 TE 在种群适应中的可能作用，我们分析了 TE 在免疫和应激挑战后为该物种生成的公开可用的脾组织转录组数据中的表达。通过分析转录组组装，我们检测到了大量的 TE 片段。此外，一些不同的TE家族在某些条件下差异表达。我们的结果表明，几个 TE 能够在R. marina中转录它们可以帮助产生标本对环境的快速反应。此外，我们可以建议这些 TE 可以在萌发细胞中被激活，并产生变异性，这些变异性可以通过这种入侵物种成功背后的进化过程来选择和塑造。因此，TE 是在R. marina适应的背景下进行调查的重要目标。