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Parasites of Madagascar's lemurs expanding with climate change
Date:1/23/2013

DURHAM, N.C. -- Rising temperatures and shifting rainfall patterns in Madagascar could fuel the spread of lemur parasites and the diseases they carry.

By combining data on six parasite species from ongoing surveys of lemur health with weather data and other environmental information for Madagascar as a whole, a team of Duke University researchers has created probability maps of likely parasite distributions throughout the island today.

Then, using climate projections for the year 2080, they estimate what parasite distributions might look like in the future.

"We can use these models to figure out where the risk of lemur-human disease transmission might be highest, and use that to better protect the future of lemur and human health," said lead author Meredith Barrett, who conducted the study while working as a graduate student at Duke.

Lemurs are native to the African island of Madagascar, where climate change isn't the only threat to their survival. More than 90 percent of the lemurs' forest habitat has already been cleared for logging, farming and grazing. Illegal hunting for bushmeat is also a problem.

A key part of saving these animals is ensuring that they stay healthy as environmental conditions in their island home continue to shift, Barrett said.

Average annual temperatures in Madagascar are predicted to rise by 1.1 to 2.6 degrees Celsius by 2080. Rainfall, drought and cyclone patterns are changing too.

In a study published in the January 2013 issue of the journal Biological Conservation, Barrett and colleagues examined what these changes could mean for lemur health by taking a cue from the parasites they carry.

The team focused on six species of mites, ticks and intestinal worms commonly known to infect lemurs. The parasites are identified in lemur fur and feces. Some species -- such as pinworms, whipworms and tapeworms -- cause diarrhea, dehydration and weight loss
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Contact: Robin Ann Smith
ras10@duke.edu
919-668-4544
Duke University
Source:Eurekalert  

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