The recent reports of a rattlesnake sighting in Bermuda certainly caught everyone’s attention; the memes have been hilarious.

While it remains unclear exactly how the snake arrived on our shores, it raises an important question: did it accidentally arrive hidden in imported cargo, or was it illegally brought into the island? Until the facts are known, either possibility reminds us why Bermuda must always take biosecurity so seriously.

As an island, Bermuda is uniquely vulnerable to introduced plants, animals and diseases. Our native wildlife evolved in isolation over millions of years, often without the predators, competitors and parasites found elsewhere. That makes our ecosystem both fascinating and incredibly fragile. It takes only one introduced species to upset a balance that has existed for centuries.

History has already shown us just how devastating that can be.

One of the most striking examples is the loss of Bermuda’s iconic cedar forests. During the 1940s, two introduced scale insects, commonly known as cedar blight, devastated the island’s endemic Bermuda cedars.

About 90 per cent of the trees were lost in little more than a decade. The landscape of Bermuda was transformed almost beyond recognition, affecting wildlife, reducing natural windbreaks and forever changing the character of the island.

Although replanting programmes have restored many cedars, we have never fully recovered what was lost.

The accidental introduction of rats from ships provides another sobering lesson. For centuries, rats preyed on the eggs and chicks of Bermuda’s ground-nesting birds, contributing to dramatic declines in several native species.

Island birds that had evolved without mammalian predators suddenly found themselves facing an enemy they had no natural defence against.

Even today, ongoing rat control remains an essential part of protecting Bermuda’s wildlife, and Leptospirosis (spread in rat urine) is a real threat for our dog and human populations.

Imported species can also threaten our pets and livestock. New parasites, ticks, mosquitoes and infectious diseases have the potential to establish themselves if introduced.

Twenty years ago there were no heartworm cases on the island, but since it was introduced by an infected dog arriving on our shores we have seen many cases of this nasty disease.

Once an invasive species becomes established, eradication is often difficult, expensive or, in some cases, impossible.

Fortunately, Bermuda has strict import controls that work remarkably well. Every animal entering the island requires permits, health certification and careful planning. These measures are not simply bureaucratic hurdles; they exist to protect the health of our animals, our environment and our community.

The same vigilance applies to imported goods. Shipping containers, building materials, garden supplies and even luggage can occasionally harbour unwanted stowaways.

While most inspections prevent these arrivals, no system is perfect, making public awareness an important part of the island’s biosecurity. The recent rattle snake sighting should not cause panic but it should remind us why protecting Bermuda from invasive species is everyone’s responsibility.

Strong biosecurity, careful inspections and prompt reporting of unusual wildlife all play an important role in protecting Bermuda’s unique plants, animals and ecosystems.

By staying vigilant we can help preserve the natural environment that makes Bermuda such a special place — for both wildlife and future generations.

• Lucy Richardson graduated from Edinburgh University in 2005. She started CedarTree Vets in August 2012 with her husband, Mark. They live at the practice with their two children, Ray and Stella, and their dog and two cats. She is also the FEI national head veterinarian for Bermuda