Latest news with #KevindeQueiroz
The Independent
19-03-2025
- Science
- The Independent
Iguanas likely crossed Pacific millions of years ago on a record-setting rafting trip
Researchers have long wondered how iguanas got to Fiji, a collection of remote islands in the South Pacific. Most modern-day iguanas live in the Americas — thousands of miles and one giant ocean away. They thought maybe they scurried there through Asia or Australia before volcanic activity pushed Fiji so far away. But new research suggests that millions of years ago, iguanas pulled off the 5,000 mile (8,000 kilometer) odyssey on a raft of floating vegetation — masses of uprooted trees and small plants. That journey is thought to be a record — further than any other land-dwelling vertebrate has ever traveled on the ocean. Scientists think that's how iguanas got to the Galapagos Islands off of Ecuador and between islands in the Caribbean. Initially they thought Fiji might be a bit too far for such a trip, but in a new study, researchers inspected the genes of 14 iguana species spanning the Americas, the Caribbean and Fiji. They discovered that Fijian iguanas were most closely related to desert iguanas from North America, and that the two groups split off around 31 million years ago. The researchers created a statistical model using that information and other tidbits about where iguanas live today and how they may spread. It suggested that the iguanas most likely floated to Fiji from North America. 'Given what we know now, their result is by far the most strongly supported,' said Kevin de Queiroz, an evolutionary biologist at the Smithsonian National Museum of Natural History, who was not involved with the new study. The research was published Monday in the journal Proceedings of the National Academy of Sciences. The journey from North America to Fiji could have taken a few months, but these desert iguanas would have been ideal passengers because they were adept at resisting dehydration and could have snacked on the plants underfoot. 'If you had to pick a vertebrate to survive a long trip on a raft across an ocean, iguanas would be the one,' said study author Simon Scarpetta from the University of San Francisco, in an email. Many Fijian iguana species are endangered, and an invasive green iguana roams the islands today, said study author Robert Fisher of the United States Geological Survey. Figuring out where these creatures came from can equip scientists with the tools to better protect them in the future.
The Guardian
18-03-2025
- Science
- The Guardian
Iguanas probably floated to Fiji millions of years ago on record-breaking raft journey, scientists say
Researchers have long wondered how iguanas got to Fiji. Most modern-day iguanas live in the Americas – thousands of miles and one giant ocean away. They thought maybe they scurried there through Asia or Australia before volcanic activity pushed the Fijian islands so far away. But new research suggests that millions of years ago, iguanas pulled off the 5,000 mile (8,000km) odyssey on a raft of floating vegetation – masses of uprooted trees and small plants. That journey is thought to be a record – further than any other land-dwelling vertebrate has ever travelled on the ocean. Scientists think that's how iguanas got to the Galápagos Islands off Ecuador and between islands in the Caribbean. Initially they thought Fiji might be a bit too far for such a trip, but in a new study, researchers inspected the genes of 14 iguana species spanning the Americas, the Caribbean and Fiji. They discovered that Fijian iguanas were most closely related to desert iguanas from North America, and that the two groups split off around 31m years ago. The researchers created a statistical model using that information and other data on where iguanas live today and how they may spread. It suggested that the iguanas most likely floated to Fiji from North America. 'Given what we know now, their result is by far the most strongly supported,' said Kevin de Queiroz, an evolutionary biologist at the Smithsonian National Museum of Natural History, who was not involved with the new study. The research was published on Monday in the journal Proceedings of the National Academy of Sciences. The journey from North America to Fiji could have taken a few months, but these desert iguanas would have been ideal passengers because they were adept at resisting dehydration and could have snacked on the plants underfoot. 'If you had to pick a vertebrate to survive a long trip on a raft across an ocean, iguanas would be the one,' said study author Simon Scarpetta from the University of San Francisco, in an email. Many Fijian iguana species are endangered, and an invasive green iguana roams the islands today, said study author Robert Fisher of the United States Geological Survey. Figuring out where these creatures came from can equip scientists with the tools to better protect them in the future.
South China Morning Post
18-03-2025
- Science
- South China Morning Post
Scientists think they've finally figured out how iguanas got to Fiji
Researchers have long wondered how iguanas got to Fiji , a collection of remote islands in the South Pacific. Most modern-day iguanas live in the Americas – thousands of miles and one giant ocean away. Advertisement They thought maybe they scurried there via Asia or Australia before volcanic activity pushed Fiji so far away. But new research suggests that millions of years ago, iguanas pulled off the 8,000km (5,000-mile) odyssey on a raft of floating vegetation – masses of uprooted trees and small plants. That journey is thought to be a record – further than any other land-dwelling vertebrate has ever travelled on the ocean. The journey from North America to Fiji could have taken a few months, but desert iguanas would have been ideal passengers. Photo: Handout Scientists think that's how iguanas got to the Galapagos Islands off of Ecuador and between islands in the Caribbean . Initially they thought Fiji might be a bit too far for such a trip, but in a new study, researchers inspected the genes of 14 iguana species spanning the Americas, the Caribbean and Fiji. They discovered that Fijian iguanas were most closely related to desert iguanas from North America, and that the two groups split off around 31 million years ago. The researchers created a statistical model using that information and other titbits about where iguanas live today and how they may spread. It suggested that the iguanas most likely floated to Fiji from North America. 'Given what we know now, their result is by far the most strongly supported,' said Kevin de Queiroz, an evolutionary biologist at the Smithsonian National Museum of Natural History, who was not involved with the new study. If you had to pick a vertebrate to survive a long trip on a raft across an ocean, iguanas would be the one Simon Scarpetta, study author The research was published on Monday in the journal Proceedings of the National Academy of Sciences.
Yahoo
17-03-2025
- Science
- Yahoo
Iguanas likely crossed the Pacific millions of years ago on a record-setting rafting trip
NEW YORK (AP) — Researchers have long wondered how iguanas got to Fiji, a collection of remote islands in the South Pacific. Most modern-day iguanas live in the Americas — thousands of miles and one giant ocean away. They thought maybe they scurried there through Asia or Australia before volcanic activity pushed Fiji so far away. But new research suggests that millions of years ago, iguanas pulled off the 5,000 mile (8,000 kilometer) odyssey on a raft of floating vegetation — masses of uprooted trees and small plants. That journey is thought to be a record — further than any other land-dwelling vertebrate has ever traveled on the ocean. Scientists think that's how iguanas got to the Galapagos Islands off of Ecuador and between islands in the Caribbean. Initially they thought Fiji might be a bit too far for such a trip, but in a new study, researchers inspected the genes of 14 iguana species spanning the Americas, the Caribbean and Fiji. They discovered that Fijian iguanas were most closely related to desert iguanas from North America, and that the two groups split off around 31 million years ago. The researchers created a statistical model using that information and other tidbits about where iguanas live today and how they may spread. It suggested that the iguanas most likely floated to Fiji from North America. 'Given what we know now, their result is by far the most strongly supported,' said Kevin de Queiroz, an evolutionary biologist at the Smithsonian National Museum of Natural History, who was not involved with the new study. The research was published Monday in the journal Proceedings of the National Academy of Sciences. The journey from North America to Fiji could have taken a few months, but these desert iguanas would have been ideal passengers because they were adept at resisting dehydration and could have snacked on the plants underfoot. 'If you had to pick a vertebrate to survive a long trip on a raft across an ocean, iguanas would be the one,' said study author Simon Scarpetta from the University of San Francisco, in an email. Many Fijian iguana species are endangered, and an invasive green iguana roams the islands today, said study author Robert Fisher of the United States Geological Survey. Figuring out where these creatures came from can equip scientists with the tools to better protect them in the future. —- The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Science and Educational Media Group and the Robert Wood Johnson Foundation. The AP is solely responsible for all content.
The Hill
17-03-2025
- Science
- The Hill
Iguanas likely crossed the Pacific millions of years ago on a record-setting rafting trip
NEW YORK (AP) — Researchers have long wondered how iguanas got to Fiji, a collection of remote islands in the South Pacific. Most modern-day iguanas live in the Americas — thousands of miles and one giant ocean away. They thought maybe they scurried there through Asia or Australia before volcanic activity pushed Fiji so far away. But new research suggests that millions of years ago, iguanas pulled off the 5,000 mile (8,000 kilometer) odyssey on a raft of floating vegetation — masses of uprooted trees and small plants. That journey is thought to be a record — further than any other land-dwelling vertebrate has ever traveled on the ocean. Scientists think that's how iguanas got to the Galapagos Islands off of Ecuador and between islands in the Caribbean. Initially they thought Fiji might be a bit too far for such a trip, but in a new study, researchers inspected the genes of 14 iguana species spanning the Americas, the Caribbean and Fiji. They discovered that Fijian iguanas were most closely related to desert iguanas from North America, and that the two groups split off around 31 million years ago. The researchers created a statistical model using that information and other tidbits about where iguanas live today and how they may spread. It suggested that the iguanas most likely floated to Fiji from North America. 'Given what we know now, their result is by far the most strongly supported,' said Kevin de Queiroz, an evolutionary biologist at the Smithsonian National Museum of Natural History, who was not involved with the new study. The research was published Monday in the journal Proceedings of the National Academy of Sciences. The journey from North America to Fiji could have taken a few months, but these desert iguanas would have been ideal passengers because they were adept at resisting dehydration and could have snacked on the plants underfoot. 'If you had to pick a vertebrate to survive a long trip on a raft across an ocean, iguanas would be the one,' said study author Simon Scarpetta from the University of San Francisco, in an email. Many Fijian iguana species are endangered, and an invasive green iguana roams the islands today, said study author Robert Fisher of the United States Geological Survey. Figuring out where these creatures came from can equip scientists with the tools to better protect them in the future. —- The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Science and Educational Media Group and the Robert Wood Johnson Foundation. The AP is solely responsible for all content.
