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UF Researchers: Development Promotes Disease Among Gopher Tortoises

GAINESVILLE ---Urban development in Florida is forcing the threatened gopher tortoise into closer and closer quarters, increasing the likelihood of them spreading a disease that could help speed their demise, according to new findings by University of Florida researchers.

Mary Brown, a UF associate professor of pathobiology and a primary investigator in the research, said as land is developed, the decreasing habitat increases contact among tortoises and creates a greater chance of spreading Upper Respiratory Tract Disease, which destroys the respiratory tract and olfactory senses.

"This is an ideal situation for the spread of most infectious diseases," she said.

Paul Klein, a UF professor of pathology, immunology and laboratory medicine and a primary investigator, said the disease is not treatable in the wild.

Klein said the loss of smell interferes with the tortoises' ability to find food, which may lead to malnutrition and starvation. He said the damaged respiratory tract can lead to secondary infections that would not have occurred with a healthy respiratory tract.

The researchers developed a brochure to help field workers identify ill tortoises, which may show signs of a runny nose, ocular discharge and swollen eyes. However, he said, some tortoises can be infected and show no outward signs of the disease.

Sanibel Island and Indian River are considered hot spots for the disease, Brown said. Because Sanibel is an island, she said, "animals are more likely to come in contact with each other, especially as habitat shrinks due to development." Brown said researchers are not sure why Indian River has a lot of animals indicating exposure to the disease.

Conservation of the gopher tortoise is important, Brown said, because the burrows they create provide homes for small animals and are important in sustaining the ecosystem. She said the burrows provide homes for about 60 vertebrates -- f
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Contact: Steve Orlando/Kristen Vecellio
sfo@ufl.edu
352-392-0186
University of Florida
2-Feb-1998


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