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<p>Invasive rodents have been successfully eradicated from islands worldwide, restoring native species and their habitats, boosting island resilience to climate change and supporting social wellbeing. There is growing interest in large-scale eradications but many tropical islands are unable to reap the benefits of rodent eradication due to technological gaps in baiting large areas of mangrove forest, a common habitat of tropical islands. An emerging product is bait bolas (bait pellets connected by string), which, on deployment, entangle in the mangrove canopy, preventing them from being washed away, ensuring the rats can access it. Scaling-up the use of bolas requires mechanisation of bola production and the development of a method to aerially deploy bolas effectively, without the bolas getting entangled with one another. The estimated cost of developing mangrove baiting technology is around US$850,000. We estimate that a combined total of around two million hectares of biodiverse tropical island could become feasible for eradication were this technology available. We call on beneficiaries and philanthropists to invest in this technology now, to unlock significant biodiversity and climate resilience gains.</p>

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Small step in tech needed to upscale tropical island eradications

  • 期刊论文

  • 发表日期：

    2025年7月3日

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  • A. J. Burt,
  • G. Harper,
  • D. Ringler,
  • M. Cagnato,
  • L. A. Turnbull,
  • J. C. Russell,
  • A. Samaniego,
  • T. Collier,
  • S. Steibl,
  • P. Carr,
  • J. C. Daltry,
  • A. Constance,
  • F. Fleischer-Dogley,
  • N. Bunbury

摘要

Invasive rodents have been successfully eradicated from islands worldwide, restoring native species and their habitats, boosting island resilience to climate change and supporting social wellbeing. There is growing interest in large-scale eradications but many tropical islands are unable to reap the benefits of rodent eradication due to technological gaps in baiting large areas of mangrove forest, a common habitat of tropical islands. An emerging product is bait bolas (bait pellets connected by string), which, on deployment, entangle in the mangrove canopy, preventing them from being washed away, ensuring the rats can access it. Scaling-up the use of bolas requires mechanisation of bola production and the development of a method to aerially deploy bolas effectively, without the bolas getting entangled with one another. The estimated cost of developing mangrove baiting technology is around US$850,000. We estimate that a combined total of around two million hectares of biodiverse tropical island could become feasible for eradication were this technology available. We call on beneficiaries and philanthropists to invest in this technology now, to unlock significant biodiversity and climate resilience gains.