New research has mapped the DNA from more than 150 species of native rodents from across Australia, New Guinea, and Melanesian islands. It paints a clearer picture of how they’re related and how they ended up spreading across the Pacific. Lead author Dr. Emily Roycroft from The Australian Nationa
New research has mapped thefrom more than 150 species of native rodents from across Australia, New Guinea, and Melanesian islands. It paints a clearer picture of how they’re related and how they ended up spreading across the Pacific. said native rodents are a fascinating but often under-appreciated evolutionary group.
The research team used a new approach to get DNA from museum specimens up to 180 years old, including many extinct and elusive species.“One specimen of Guadalcanal rat from the Solomon Islands dates back to the 1880s, and the species hasn’t been seen since. It’s listed as critically endangered, and very possibly already extinct. We were curious to revisit these old specimens using modern technology,” said Dr. Roycroft.
“Our study shows native rodents are exceptional at colonizing new areas. When they first arrived in Australia they adapted to a lot of new environments – including the arid desert.
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