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Newswise Boston (March 29, 2015) For humans, Salmonella is always bad news. The bacterial pathogen causes paratyphoid fever, gastroenteritis and typhoid. But for snakes, the bacteria arent always bad news. Certain species of Salmonella are a natural part of the snake microbial collective. However, the occasional species can cause a disease. Reptile handlers would love to know when they have a potentially problematic pathogen lurking in the midst of their snakes.
To better understand the variety of Salmonella species harbored by captive reptiles, Staten Island Zoo has teamed up with the microbiology department at Wagner College. Eden Stark, a graduate student on the project, her advisor, Christopher Corbo, and the zoos curator and head veterinarian Marc Valitutto want to know how many Salmonella species live among the Staten Island Zoo rattlesnakes. The zoo has a long history of exhibiting one of the most comprehensive rattlesnake collections in the world, currently with 21 of 38 species on display.
So far, Stark has surveyed 26 species of snakes. Few other institutions have undertaken such broad scale analysis of Salmonella in snakes, notes Valitutto. The research will be presented at the American Society for Biochemistry and Molecular Biology (ASBMB) Annual Meeting during Experimental Biology 2015.
In particular, the investigators are on the lookout for pathogenic species of Salmonella, such as Salmonella arizonae. This species of Salmonella has been known to cause infections in snakes called osteomyelitis. It has a predilection for the bones, such as the vertebra. The bone may deform, and as the infection spreads, the deformed vertebrae may stop the snake from slithering.
The infection may be surgically removed or treated with antibiotics if its localized and caught early enough. But if left untreated, the infection may eventually cause the snake to die.
If we do get a snake that is positive for arizonae, were concerned, says Valitutto. We would not want add something like that to our collection because theres a possibility it will infect our other reptiles.
Another reason to account for the different Salmonella species is for the safety for the zookeepers. Salmonella is strictly a pathogen for humans. Its something that anyone who handles reptiles, even people who keep them at home as pets, has to be very cautious about in handling them or anything that is part of their enclosure, says Corbo.
To categorize the Salmonella species, Stark isolated the bacteria from snake fecal samples. The feces were collected by seasoned zookeepers at Staten Island Zoo who know how to handle venomous snakes.
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Survey of Salmonella Species in Staten Island Zoo's Snakes
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