"There is only a proportion of the animal population here that is susceptible to the disease, but it is not entirely clear how much of the animal collection would have to be culled should the outbreak reach Edinburgh Zoo, " he said.
Humans wiped out the indigenous wild animal population a century ago, but now the animals are back, carefully restocked and maintained in growing numbers.
Its isolation has led to a unique geography and animal population, including the lemur, which took a star role in the 2005 animated Hollywood movie named after the island.
The problem will be worsened by global warming affecting the population balance of animal predators such as owls, snakes, birds and bats, animals that keep insects and rodents in check.
The VWT, an environmental charity with offices in Brecon and Builth Wells, says it will work with the community to develop a "greater understanding of this secretive animal", survey the bat population and improve their travel routes between roosts and woodland.
Their concern was two-fold: Many fear that cultivating human cells close to mouse cells might allow animal viruses to move into the human population.
Smallpox decimated much of the native American population when it came over with the Europeans, more than 400 years ago. (One reason, by the way, the buffalo population exploded in the West, leading subsequent settlers to think the animal could be killed with abandon).
Just as weather forecasters chart storms off Africa to predict which ones could become hurricanes, he hopes to create a database of animal viruses that have the potential to cross into the human population over the next few decades.
The global ant population is estimated at 10, 000 trillion, greatly outnumbering any other sort of animal.
The only industry is bead necklaces, animal figurines and other handicrafts fashioned by the 170 or so Guarani Indians who constitute Krukutu's population.
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