— They’re not as menacing as Burmese pythons, but Giant African snails
are now in the same class as the large snakes — targets of the
The invasive mollusks are considered a major plant
pest and a potential public health threat. And now federal and state
authorities are seeking to prevent the large, slimy, shell-toting
snails from re-establishing themselves in
Once established, agricultural officials said, the mollusks “can create a giant swath of destruction.”
“The idea is that these are prolific breeders,”
Known as Achatina fulica, the species is one of the
world’s largest land snails. They can grow to be 8 inches long and 4.5
inches in diameter.
In addition to destroying plants and damaging
ornamental plants, they are a potential health risk because they spread
disease, officials said.
It is illegal to import the snails into
The snail has not been an issue in
area as pets. They were later released into a garden by his
grandmother. And by 1973, their population had grown to more than
18,000 snails, officials said.
Over the next decade, government officials spent more than
to eradicate them. That effort is considered the only successful Giant
African snail eradication on record, government officials say.
Scientists say the snails consume at least 500 kinds of plants, including citrus crops, Fagan said.
They can also damage buildings by consuming plaster,
stucco and other materials they need to grow their shells. Large
numbers of these snails can cause extensive damage.
They also carry parasites and worse: “These snails
are known to carry meningitis bacteria, so it’s also a health concern,”
The snails are identified by seven to nine “whorls”
or spirals. They have a brownish shell, covering half the length of
their bodies. They live up to nine years and have female and male
After mating, each snail can produce 100 to 400 eggs. Mated adults lay about 1,200 eggs a year.
The snails originate from
recently stepped up inspection efforts following a “GAS interception,”
according to a statement. But it has found no additional snails.
Fagan said multiple snails were found in February at one property in
Last year, state and federal wildlife officials began a concerted effort to prevent the spread of python species in and around
Fagan said it is difficult to compare the two
threats. “The snakes pose a completely different threat to nature,” he
said. “I don’t think you can compare the two.”
As for the snails, government officials are
concerned about the damage they can do to plant life, people and even
the structures in which they live.
“Absolutely there’s an urgent need to make sure these have not gotten out into neighborhoods,” Fagan said.
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