How did scientists save the Lesser Antillean iguana on Prickly Pear East Cay?

Scientists reintroduced a small population of Lesser Antillean iguanas to Prickly Pear East Cay, a predator-free sanctuary, which then multiplied.

What are the main threats to the Lesser Antillean iguana?

The main threats include competition from invasive green iguanas and hybridization, as well as loss of habitat.

What is the current status of the Lesser Antillean iguana population?

The population is critically endangered but showing signs of recovery in protected areas like Prickly Pear East Cay, now numbering over 300.

Home / Environment / Iguana Love Nest: Critically Endangered Reptiles Thrive

Iguana Love Nest: Critically Endangered Reptiles Thrive

18 Dec, 2025

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Summary

Lesser Antillean iguana population rebounded from zero to 300.
Green iguanas pose a significant threat due to competition and hybridization.
Prickly Pear East Cay serves as a critical predator-free sanctuary.

Iguana Love Nest: Critically Endangered Reptiles Thrive

Prickly Pear East Cay in the Caribbean has been transformed into a haven for the critically endangered Lesser Antillean iguana. Nearly a decade ago, this islet's iguana population was zero. Determined scientists from Anguilla relocated 10 iguanas to the predator-free cay, leading to a remarkable population surge to 300 individuals and counting. This conservation success story makes Prickly Pear East Cay one of only five global sites where the species is experiencing a comeback.

The Lesser Antillean iguana, native to the eastern Caribbean, once inhabited numerous islands but is now extinct on several and scarce on others. Its primary threat is the invasive green iguana, introduced from Central and South America. Green iguanas are more prolific, territorial, and consume more food. Crucially, they interbreed with Lesser Antillean iguanas, jeopardizing the genetic integrity of the native species.