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EcologyDesertas Islands, Madeira

Revival of the Critically Endangered Desertas Island Snails

More than 1,300 tiny snails bred in captivity are released into their natural habitat after nearly facing extinction.

Source: bbc.co.uk1 min read
Revival of the Critically Endangered Desertas Island Snails
Image via bbc.co.uk

In brief

In a significant victory for biodiversity, conservationists recently released 1,329 critically endangered Desertas land snails back into the wild on Bugio Island, a remote part of the Ilhas Desertas archipelago near Madeira. Once believed to be extinct, the snails are native to Deserta Grande, which had its habitats devastated by invasive species introduced by humans.

After conservationists discovered a small population of these snails on rocky cliffs from 2012 to 2017, efforts began to rescue and breed them. Captured individuals were brought to facilities like Chester Zoo, where successful propagation took place. Here, a home was carefully constructed to replicate their natural environment, allowing for the breeding of 1,329 healthy offspring.Before their release, these tiny molluscs were marked with unique, non-toxic color-coded dots to track their movement and survival post-release. This tracking method will enable scientists to monitor the growth and adaptation of the snails in their newly restored habitat on Bugio Island, where previous threats from invasive species have been eradicated.Gerardo Garcia from Chester Zoo highlighted this reintroduction as instrumental in recovery plans for other endangered species. He expressed optimism for the future, noting that if these snails adapt well, more could be released in the following spring.Heather Prince of Chester Zoo emphasized the ecological importance of snails, stating they are vital for soil health and nutrient cycling. Their successful reestablishment could have positive ripple effects throughout the island's ecosystem.This program demonstrates that with dedication and teamwork, positive outcomes can occur for highly threatened species affected by human actions. Invasive Species Chester Zoo Endangered Species Conservation Science & Environment Wildlife Nature Insects Environment

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