日本語
 
Help Privacy Policy ポリシー/免責事項
  詳細検索ブラウズ

アイテム詳細


公開

学術論文

The loss of biodiversity in Madagascar is contemporaneous with major demographic events

MPS-Authors
/persons/resource/persons72992

Stoneking,  Mark       
Human Population History, Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

External Resource
There are no locators available
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
フルテキスト (公開)
公開されているフルテキストはありません
付随資料 (公開)
There is no public supplementary material available
引用

Alva, O., Leroy, A., Heiske, M., Pereda-Loth, V., Tisseyre, L., Boland, A., Deleuze, J.-F., Rocha, J., Schlebusch, C., Fortes-Lima, C., Stoneking, M., Radimilahy, C., Rakotoarisoa, J.-A., Letellier, T., & Pierron, D. (2022). The loss of biodiversity in Madagascar is contemporaneous with major demographic events. Current Biology, 32, 4997-5007, e1-e5. doi:10.1016/j.cub.2022.09.060.


引用: https://hdl.handle.net/21.11116/0000-000C-A319-0
要旨
Only 400 km off the coast of East Africa, the island of Madagascar is one of the last large land masses to have been colonized by humans. While many questions surround the human occupation of Madagascar, recent studies raise the question of human impact on endemic biodiversity and landscape transformation. Previous genetic and linguistic analyses have shown that the Malagasy population has emerged from an admixture that happened during the last millennium, between Bantu-speaking African populations and Austronesian-speaking Asian populations. By studying the sharing of chromosome segments between individuals (IBD determination), local ancestry information, and simulated genetic data, we inferred that the Malagasy ancestral Asian population was isolated for more than 1,000 years with an effective size of just a few hundred individuals. This isolation ended around 1,000 years before present (BP) by admixture with a small African population. Around the admixture time, there was a rapid demographic expansion due to intrinsic population growth of the newly admixed population, which coincides with extensive changes in Madagascar’s landscape and the extinction of all endemic large-bodied vertebrates. Therefore, our approach can provide new insights into past human demography and associated impacts on ecosystems