Introduced wall lizards have adapted to Cincinnati – Image for illustrative purposes only (Image credits: Unsplash)
Cincinnati – A boy’s impulsive act in the early 1950s forever changed the city’s urban wildlife. He smuggled about a dozen European common wall lizards from a family trip to northern Italy, hiding them in a sock before releasing them near his Ohio home. These Podarcis muralis lizards quickly established themselves, spreading through Cincinnati’s walls and parks. Recent genetic research now uncovers how this small founding group adapted remarkably, including signs of resilience against lead poisoning in their new industrial surroundings.
The Boy Who Started It All
Unlike many invasive species introductions shrouded in mystery, the origin of Cincinnati’s wall lizards traces directly to one confessed childhood adventure. The boy, years later, detailed his deed in a letter, pinpointing the release spot after his vacation near Milan. Biologists seized this rare historical account to verify the lizards’ roots through DNA analysis.
Over decades, the population expanded from those initial dozen individuals into abundant city dwellers. Eric Gangloff, a professor at Ohio Wesleyan University, described the sight in local parks: “There are gazillions of them.” Their success defied the odds of such a genetic bottleneck, prompting deeper investigation into their adaptations.
Urban Climbers Find a Perfect Fit
Common wall lizards hail from Central and Southern Europe, where they thrive amid city walls and ancient ruins. In Cincinnati, they mirrored this behavior, sticking mostly to urban and suburban zones rather than venturing into rural Ohio. Collaborators even eradicated a small Columbus group – two hours away – in a high school parking lot, highlighting their city-centric habits…