Fijian iguanas, known for their distinctive appearance, have puzzled scientists regarding their origins. Recent genetic analysis published in Proceedings of the National Academy of Sciences USA has unveiled that these reptiles likely traveled from southwestern North America, overcoming a staggering distance of over 5,000 miles. This study compared the genomes of Fijian iguanas with those of various American species, confirming their closest relationship with desert iguanas. This discovery debunked previous theories suggesting alternative migration routes, underscoring the impressiveness of their oceanic journey and shedding light on the evolutionary paths of these unique lizards.
The research findings reveal that Fijian iguanas are genetically linked to desert iguanas from southwestern North America, suggesting an incredible migration over 5,000 miles.
The study challenges previously held beliefs about how iguanas colonized the islands, pointing instead to a genetic relationship with desert iguanas, highlighting their remarkable journey.
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