Revival of the Endangered Lesser Antillean Iguanas in the Caribbean

Post by : Bianca Suleiman

Once a silent retreat, Prickly Pear East Cay has transformed into a bustling sanctuary for the threatened Lesser Antillean iguana. Conservationists and scientists are celebrating the remarkable recovery of this critically endangered species, which has grown from zero individuals to an impressive 300.

This transformation, spearheaded by the Anguilla National Trust and various global conservation organizations, underscores the impact of strategic human intervention in reviving vulnerable wildlife.

The Threatened Species

Historically, the Lesser Antillean iguana, or Iguana delicatissima, thrived across numerous Caribbean islands. Indigenous communities coexisted with them for centuries, and it's believed they arrived in the Caribbean by drifting on debris from the South American shores.

However, their fate took a grim turn due to habitat degradation, invasive species, and competition with the aggressive green iguana. Now, they are extinct in places like Antigua, Barbuda, and St. Kitts, with estimates suggesting less than 20,000 remain worldwide.

A Bold Conservation Initiative

Nearly a decade ago, Prickly Pear East Cay was devoid of these rare iguanas. The cay, free from predators like dogs and cats, was identified as an optimal location for a rescue initiative.

Science teams in Anguilla embarked on a mission to capture iguanas across the island, relying on community reports to locate them. After thorough searching, just 23 purebred iguanas were located.

Genetic testing ensured these iguanas retained their species purity. The initial 10 iguanas were successfully transported to the cay, followed by the rest after adjusting to their new environment.

A Thriving Population

This initiative has proved phenomenally successful.

The iguanas adapted swiftly, laying nests and giving rise to new life. The population has now surged to 300—and the island has become one of the few global havens for this iguana species.

Combatting External Threats

The ongoing threat from the invasive green iguana remains significant. This non-native species not only competes for resources but also hybridizes with the Lesser Antillean iguana, jeopardizing its purity.

Thus, relocating iguanas to predator-free habitats is vital to ensuring their survival.

Boosting Genetic Diversity

Concern over the genetic diversity of such a small population prompted researchers to turn to Dominica, which boasts a larger number of pure iguanas. During the pandemic, conservationists screened and transported iguanas from Dominica, ensuring they remained genetically distinct.

The caregivers fed some iguanas by hand, employing syringes, while others enjoyed a diet of fresh vegetables. Eventually, these iguanas were flown back to Anguilla, enhancing the growing colony on Prickly Pear East Cay.

Life on the Cay

This uninhabited cay, aside from a couple of small restaurants catering to locals and tourists, is an ideal environment for these iguanas. They enjoy ample vegetation, safe nesting, and are free from predators and traffic.

• ample safe nesting areas

• abundant vegetation

• absence of predators

• no roads or vehicles

Living over 20 years, these iguanas experience significant color changes as they age, evolving from vibrant green to muted gray or black shades.

A Hopeful Future

Scientists celebrate every sign of life as evidence that endangered species can rebound given conducive environments.

This iguana's remarkable recovery highlights the importance of biodiversity and reminds us that every species plays a role in ecosystem health.

The journey of Prickly Pear East Cay illustrates the potential for humans to restore what has been harmed, advocating for patience and scientific dedication.

From silence to vibrancy, the Lesser Antillean iguana has been granted a new lease on life, turning this Caribbean haven into a shining beacon for conservation.