Koalas

Koala in a eucalyptus tree. New genomic research shows that the major decline in koala populations began about 100 years ago, before humans arrived in Australia. Credit: Enhua Lee / University of Sydney

Genome reveals: Koala population collapse began about 100 years ago

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The first measurement of the mutation rate in koalas shows that their population began to collapse about 100 years ago – before humans arrived in Australia. A small eastern population survived and re-expanded.
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