Scientists Proposed Three Extinct Animals for Ecological Revival

Details

De-extinction is not simply about making a vanished animal appear again. The idea also raises a conservation question: if biotechnology can create an animal resembling an extinct species, where could that animal actually help an ecosystem? In 2016, ecologists proposed a framework for choosing de-extinction candidates based on ecological value. They argued that recently extinct species may be better candidates because their original environments have had less time to change. They also suggested prioritizing animals whose ecological roles are difficult to replace and species that could eventually exist in numbers large enough to make a meaningful difference. Using those ideas, the researchers highlighted three examples: the Christmas Island pipistrelle bat, the Réunion giant tortoise, and the lesser stick-nest rat. The bat had been the only insect-eating bat in its habitat, making its former role potentially difficult to replace. The giant tortoise had helped spread seeds across its island environment. The lesser stick-nest rat was another relatively recent extinction that fit the researchers broader ecological criteria. The important distinction is that these animals were proposed as promising candidates, not announced as successfully revived species. Modern de-extinction approaches can involve selective breeding, cloning, or genetic engineering, and the result may be a close proxy rather than an exact recreation of the original animal. The ecological setting matters just as much as the biology. If an animal cannot survive and reproduce in a suitable environment, simply creating one would not restore its former ecological role. That is why the 2016 proposal focused on ecological function rather than spectacle. The researchers argued that de-extinction should be evaluated as a possible conservation tool, alongside ecology, habitat management, genetics, and the practical conditions needed for a restored population to thrive.