Unraveling Human Migrations into Micronesia: A Discussion with Dr. Yue-Chen Liu

Understanding the movements and migrations of ancient humans can often be an intricate puzzle. In this episode, we explore this fascinating topic with Dr. Yue-Chen Liu, who has delved into the peopling of the Micronesian islands. By examining 164 ancient human remains from five different archaeological sites in Remote Oceania, along with 112 present-day individuals from the same area, Liu and his team have unraveled the intricate threads of human migration.Dr. Liu explains how their analysis unveiled five migratory streams into Micronesia, with three being East Asian-related, one Polynesian, and a fifth from a Papuan source related to mainland New Guineans. Interestingly, this Papuan source, derived from male migrants around 2000-2500 years ago, was distinct from the New Britain–related Papuan source for southwest Pacific populations.Discussing the people of the Mariana Archipelago, Dr. Liu makes an intriguing observation - they may derive all their precolonial ancestry from East Asian sources, rendering them the only Remote Oceanians without Papuan ancestry.Dr. Liu also shares how mitochondrial DNA studies revealed a highly differentiated yet localized pattern among early Remote Oceanian communities, implying matrilocal practices. The genetic data indicate that women almost never raised their children in communities different from the ones in which they grew up.This episode offers a fascinating journey into the ancient human migrations into Micronesia, revealing the interplay of genetics, archaeology, and the human story.Keywords: Dr. Yue-Chen Liu, Human migrations, Micronesia, Genetics, Archaeology, Ancient DNA, Papuan Ancestry, Matrilocal Practices, Mariana Archipelago.Ancient DNA reveals five streams of migration into Micronesia and matrilocality in early Pacific seafarers https://doi.org/10.1126/science.abm6536