Bats originated in Europe 65 million years ago, genome study reveals
Global bat evolution traced to Europe during late Palaeocene warming period
1European origin confirmed
The largest-ever bat genome study overturned previous theories of African or North American origins, pinpointing Europe as the birthplace of bats 65 million years ago during the late Palaeocene. This period coincided with significant global warming and environmental changes that likely facilitated their evolution. The research involved 137 scientists across 64 countries analyzing 103 bat species, including rare specimens and fossils.
2Global dispersal pattern
Bats spread from Europe to Africa first, then expanded to Asia, the Americas, and Australia - becoming the only flying mammals to inhabit every continent except Antarctica. Their flight capability provided a crucial evolutionary advantage for global colonization. Modern bats maintain this dispersal capacity, with some species migrating thousands of kilometers across diverse climates.
3Early echolocation development
The study revealed bats developed echolocation almost immediately in their evolutionary history, predating the diversification of modern species. This biological sonar system, using sound emission and echo reception, emerged alongside flight capabilities. The dual adaptation gave bats unique advantages for nocturnal navigation and hunting in darkness.
4Massive genomic dataset
Researchers spent decades compiling data from all 21 extant bat families, including rare and remote species. They employed advanced DNA sequencing to compare modern and fossil bat genomes, reconstructing the most comprehensive evolutionary tree to date. This allowed resolution of long-standing debates about bat lineage relationships and diversification timelines.
5Ecological importance
Despite being associated with disease transmission, bats play vital ecological roles as pollinators, pest controllers, and seed dispersers. Their immune adaptations allow them to host diverse viruses without symptoms. Some species exhibit exceptional longevity compared to similarly-sized mammals, living up to 30-40 years - ten times longer than expected.
6Medical research potential
Scientists aim to study bats' unique disease resistance and longevity mechanisms for human health applications. The genomic resource may reveal genetic factors enabling bats' virus tolerance and extended lifespans. Researchers hope to develop bat-inspired medical approaches, potentially leading to breakthroughs in aging and immunity treatments.
7Evolutionary adaptations
With over 1,500 species worldwide, bats demonstrate extraordinary evolutionary flexibility. Their adaptations include flight, echolocation, virus resistance, and longevity - all emerging early in their evolutionary history. These traits enabled bats to become the second most diverse mammal order, representing 20% of all living mammal species.
8Climate change parallels
The study highlights how bats first evolved during a period of significant global warming, suggesting climate change may drive evolutionary innovation. Understanding how bats adapted to ancient environmental shifts could provide insights into species resilience amid current climate challenges. Their success story offers lessons in biodiversity preservation.