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DNA provides a unique look for mowers and climate change

Directed by an artist whose Haast’s Eagle is attacking Moa. Credits: John Megahan-Ancient DNA tells the story of the evolution of the Giant Eagle. PLoS Biol 3 (1): e20. doi: 10.1371 / journal.pbio.0030020.g001

According to a study at the University of Otago, ancient Moa DNA has provided insights into how species respond to climate change.


By analyzing the ancient DNA of extinct eastern moas, zoologists have discovered that giant birds have changed their distribution as the climate warms and cools.

Lead author Dr. Alex Verry said the species spread to the eastern and southern parts of the South Island during the warm Holocene, but was limited to the southern part of the South Island at the height of the Last Glacial Period, about 25,000 years ago. I am saying.

This is in comparison to the heavy-footed mowers, which retreated to both the southern and northern regions of the South Island, where high-altitude mowers lived in four different regions.

“The reaction of Eastern Moa is Population size Genetic Diversity — The Last Glacial Period led to a marked genetic bottleneck, which ultimately meant lower Genetic diversity More than any other Moa living in the same area, “says Dr. Verry.

Research published in Biology letterIs a high-throughput DNA sequence that simultaneously sequences millions of DNA, Population level..

The findings emphasize how past climate change has affected species in different ways, and that a “one size fits all” model is impractical.

“What will happen to species trying to adapt to climate change today and in the future? Will they move to new areas to survive?

“This is not possible with some species, and some species run out of space. For example, alpine species need to move up, but only until there is no” up “,” he says. increase.

Co-author Dr. Nick Lawrence, director of the Otago Institute for Paleobiotics, states that the study is a rare example of past influences. Climate change About the extinct Megafauna from New Zealand.

I will also show you how Fossil remains When Museum collection It can be used to answer new questions about the past.

“This really brings the power of paleogenomics to New Zealand’s research questions, but previously most research and interest focused on Eurasia or the United States. Race.. We are actually starting to build the capabilities of this research in New Zealand, “he says.


Blue-eyed shag survived New Zealand’s ice age


For more information:
Genetic evidence of post-glacier expansion from refugium south of Emeus crassus, Biology letter (2022). DOI: 10.1098 / rsbl.2022.0013.. royalsocietypublishing.org/doi…. 1098 / rsbl.2022.0013

Quote: DNA is moa and climate change obtained on May 10, 2022 from https: //phys.org/news/2022-05-dna-unique-moa-climate.html (May 10, 2022) Provides a unique look of

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DNA provides a unique look for mowers and climate change

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