Bioengineer (Reino Unido)
Em 2021: 63 notícias
Desde 1995: 334 notícias

The formation of the Amazon Basin influenced the distribution of manatees

Publicado em 10 maio 2021
Whole mitochondrial DNA sequencing of the three extant species of the aquatic mammal shows that they first split from their common ancestor after geological events isolated the South American region from the sea All three species of manatee now present on Earth share a common ancestor from which they split some 6.5 million years ago, when a huge lake in Amazonia, then linked to the Caribbean, was cut off from the sea. The African manatee Trichechus senegalensis is not as genetically close to [...]