show Abstracthide AbstractIn this project, we will investigate the semelparous mammals of South America during their short, highly-synchronised breeding seasons. Unveiling the life-history of these enigmatic animals using genomic data (genomes, transcriptomes, and epigenomes) will deliver insights into the evolution of semelparity, the universal ageing process, and marsupial biology. Data generated in this study will be shared through the community resource http://www.semelparous.life, creating opportunities for future studies and aiding conservation efforts.